diff --git a/libraries/katex/README.md b/libraries/katex/README.md index 265dbfde1..1238891d5 100644 --- a/libraries/katex/README.md +++ b/libraries/katex/README.md @@ -1,4 +1,10 @@ -# [KaTeX](https://katex.org/) +

+ + + KaTeX + +

+ [![npm](https://img.shields.io/npm/v/katex.svg)](https://www.npmjs.com/package/katex) [![semantic-release](https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg)](https://github.com/semantic-release/semantic-release) [![CI](https://github.com/KaTeX/KaTeX/workflows/CI/badge.svg?branch=main&event=push)](https://github.com/KaTeX/KaTeX/actions?query=workflow%3ACI) @@ -31,13 +37,13 @@ Try out KaTeX [on the demo page](https://katex.org/#demo)! - + - + - ... diff --git a/libraries/katex/auto-render.js b/libraries/katex/auto-render.js index 6980cdd14..0ec4f69f9 100644 --- a/libraries/katex/auto-render.js +++ b/libraries/katex/auto-render.js @@ -235,11 +235,33 @@ var renderElem = function renderElem(elem, optionsCopy) { if (childNode.nodeType === 3) { // Text node - var frag = renderMathInText(childNode.textContent, optionsCopy); + // Concatenate all sibling text nodes. + // Webkit browsers split very large text nodes into smaller ones, + // so the delimiters may be split across different nodes. + var textContentConcat = childNode.textContent; + var sibling = childNode.nextSibling; + var nSiblings = 0; + + while (sibling && sibling.nodeType === Node.TEXT_NODE) { + textContentConcat += sibling.textContent; + sibling = sibling.nextSibling; + nSiblings++; + } + + var frag = renderMathInText(textContentConcat, optionsCopy); if (frag) { + // Remove extra text nodes + for (var j = 0; j < nSiblings; j++) { + childNode.nextSibling.remove(); + } + i += frag.childNodes.length - 1; elem.replaceChild(frag, childNode); + } else { + // If the concatenated text does not contain math + // the siblings will not either + i += nSiblings; } } else if (childNode.nodeType === 1) { (function () { diff --git a/libraries/katex/auto-render.min.js b/libraries/katex/auto-render.min.js index c169ec639..74f07c2f9 100644 --- a/libraries/katex/auto-render.min.js +++ b/libraries/katex/auto-render.min.js @@ -1 +1 @@ -!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t(require("katex")):"function"==typeof define&&define.amd?define(["katex"],t):"object"==typeof exports?exports.renderMathInElement=t(require("katex")):e.renderMathInElement=t(e.katex)}("undefined"!=typeof self?self:this,(function(e){return function(){"use strict";var t={771:function(t){t.exports=e}},r={};function n(e){var a=r[e];if(void 0!==a)return a.exports;var i=r[e]={exports:{}};return t[e](i,i.exports,n),i.exports}n.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){return e};return n.d(t,{a:t}),t},n.d=function(e,t){for(var r in t)n.o(t,r)&&!n.o(e,r)&&Object.defineProperty(e,r,{enumerable:!0,get:t[r]})},n.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)};var a={};return function(){n.d(a,{default:function(){return s}});var e=n(771),t=n.n(e),r=function(e,t,r){for(var n=r,a=0,i=e.length;n0&&(a.push({type:"text",data:e.slice(0,n)}),e=e.slice(n));var l=t.findIndex((function(t){return e.startsWith(t.left)}));if(-1===(n=r(t[l].right,e,t[l].left.length)))break;var d=e.slice(0,n+t[l].right.length),s=i.test(d)?d:e.slice(t[l].left.length,n);a.push({type:"math",data:s,rawData:d,display:t[l].display}),e=e.slice(n+t[l].right.length)}return""!==e&&a.push({type:"text",data:e}),a},l=function(e,r){var n=o(e,r.delimiters);if(1===n.length&&"text"===n[0].type)return null;for(var a=document.createDocumentFragment(),i=0;i0&&(i.push({type:"text",data:e.slice(0,n)}),e=e.slice(n));var l=t.findIndex((function(t){return e.startsWith(t.left)}));if(-1===(n=r(t[l].right,e,t[l].left.length)))break;var d=e.slice(0,n+t[l].right.length),s=a.test(d)?d:e.slice(t[l].left.length,n);i.push({type:"math",data:s,rawData:d,display:t[l].display}),e=e.slice(n+t[l].right.length)}return""!==e&&i.push({type:"text",data:e}),i},l=function(e,r){var n=o(e,r.delimiters);if(1===n.length&&"text"===n[0].type)return null;for(var i=document.createDocumentFragment(),a=0;a element). +// Modifies fragment in-place. Useful for writing your own 'copy' handler, +// as in copy-tex.js. + +function katexReplaceWithTex(fragment, copyDelimiters) { + if (copyDelimiters === void 0) { + copyDelimiters = defaultCopyDelimiters; + } + + // Remove .katex-html blocks that are preceded by .katex-mathml blocks + // (which will get replaced below). + var katexHtml = fragment.querySelectorAll('.katex-mathml + .katex-html'); + + for (var i = 0; i < katexHtml.length; i++) { + var element = katexHtml[i]; + + if (element.remove) { + element.remove(); + } else if (element.parentNode) { + element.parentNode.removeChild(element); + } + } // Replace .katex-mathml elements with their annotation (TeX source) + // descendant, with inline delimiters. + + + var katexMathml = fragment.querySelectorAll('.katex-mathml'); + + for (var _i = 0; _i < katexMathml.length; _i++) { + var _element = katexMathml[_i]; + + var texSource = _element.querySelector('annotation'); + + if (texSource) { + if (_element.replaceWith) { + _element.replaceWith(texSource); + } else if (_element.parentNode) { + _element.parentNode.replaceChild(texSource, _element); + } + + texSource.innerHTML = copyDelimiters.inline[0] + texSource.innerHTML + copyDelimiters.inline[1]; + } + } // Switch display math to display delimiters. + + + var displays = fragment.querySelectorAll('.katex-display annotation'); + + for (var _i2 = 0; _i2 < displays.length; _i2++) { + var _element2 = displays[_i2]; + _element2.innerHTML = copyDelimiters.display[0] + _element2.innerHTML.substr(copyDelimiters.inline[0].length, _element2.innerHTML.length - copyDelimiters.inline[0].length - copyDelimiters.inline[1].length) + copyDelimiters.display[1]; + } + + return fragment; +} +/* harmony default export */ var katex2tex = (katexReplaceWithTex); +;// CONCATENATED MODULE: ./contrib/copy-tex/copy-tex.js + // Return
element containing node, or null if not found. + +function closestKatex(node) { + // If node is a Text Node, for example, go up to containing Element, + // where we can apply the `closest` method. + var element = node instanceof Element ? node : node.parentElement; + return element && element.closest('.katex'); +} // Global copy handler to modify behavior on/within .katex elements. + + +document.addEventListener('copy', function (event) { + var selection = window.getSelection(); + + if (selection.isCollapsed || !event.clipboardData) { + return; // default action OK if selection is empty or unchangeable + } + + var clipboardData = event.clipboardData; + var range = selection.getRangeAt(0); // When start point is within a formula, expand to entire formula. + + var startKatex = closestKatex(range.startContainer); + + if (startKatex) { + range.setStartBefore(startKatex); + } // Similarly, when end point is within a formula, expand to entire formula. + + + var endKatex = closestKatex(range.endContainer); + + if (endKatex) { + range.setEndAfter(endKatex); + } + + var fragment = range.cloneContents(); + + if (!fragment.querySelector('.katex-mathml')) { + return; // default action OK if no .katex-mathml elements + } + + var htmlContents = Array.prototype.map.call(fragment.childNodes, function (el) { + return el instanceof Text ? el.textContent : el.outerHTML; + }).join(''); // Preserve usual HTML copy/paste behavior. + + clipboardData.setData('text/html', htmlContents); // Rewrite plain-text version. + + clipboardData.setData('text/plain', katex2tex(fragment).textContent); // Prevent normal copy handling. + + event.preventDefault(); +}); +__webpack_exports__ = __webpack_exports__["default"]; +/******/ return __webpack_exports__; +/******/ })() +; +}); \ No newline at end of file diff --git a/libraries/katex/copy-tex.min.js b/libraries/katex/copy-tex.min.js new file mode 100644 index 000000000..5a1ec34d7 --- /dev/null +++ b/libraries/katex/copy-tex.min.js @@ -0,0 +1 @@ +!function(e,t){if("object"==typeof exports&&"object"==typeof module)module.exports=t();else if("function"==typeof define&&define.amd)define([],t);else{var n=t();for(var r in n)("object"==typeof exports?exports:e)[r]=n[r]}}("undefined"!=typeof self?self:this,(function(){return function(){"use strict";var e={},t={inline:["$","$"],display:["$$","$$"]};var n=function(e,n){void 0===n&&(n=t);for(var r=e.querySelectorAll(".katex-mathml + .katex-html"),a=0;a element). +// Modifies fragment in-place. Useful for writing your own 'copy' handler, +// as in copy-tex.js. + +function katexReplaceWithTex(fragment, copyDelimiters) { + if (copyDelimiters === void 0) { + copyDelimiters = defaultCopyDelimiters; + } + + // Remove .katex-html blocks that are preceded by .katex-mathml blocks + // (which will get replaced below). + var katexHtml = fragment.querySelectorAll('.katex-mathml + .katex-html'); + + for (var i = 0; i < katexHtml.length; i++) { + var element = katexHtml[i]; + + if (element.remove) { + element.remove(); + } else if (element.parentNode) { + element.parentNode.removeChild(element); + } + } // Replace .katex-mathml elements with their annotation (TeX source) + // descendant, with inline delimiters. + + + var katexMathml = fragment.querySelectorAll('.katex-mathml'); + + for (var _i = 0; _i < katexMathml.length; _i++) { + var _element = katexMathml[_i]; + + var texSource = _element.querySelector('annotation'); + + if (texSource) { + if (_element.replaceWith) { + _element.replaceWith(texSource); + } else if (_element.parentNode) { + _element.parentNode.replaceChild(texSource, _element); + } + + texSource.innerHTML = copyDelimiters.inline[0] + texSource.innerHTML + copyDelimiters.inline[1]; + } + } // Switch display math to display delimiters. + + + var displays = fragment.querySelectorAll('.katex-display annotation'); + + for (var _i2 = 0; _i2 < displays.length; _i2++) { + var _element2 = displays[_i2]; + _element2.innerHTML = copyDelimiters.display[0] + _element2.innerHTML.substr(copyDelimiters.inline[0].length, _element2.innerHTML.length - copyDelimiters.inline[0].length - copyDelimiters.inline[1].length) + copyDelimiters.display[1]; + } + + return fragment; +} + +function closestKatex(node) { + // If node is a Text Node, for example, go up to containing Element, + // where we can apply the `closest` method. + var element = node instanceof Element ? node : node.parentElement; + return element && element.closest('.katex'); +} // Global copy handler to modify behavior on/within .katex elements. + + +document.addEventListener('copy', function (event) { + var selection = window.getSelection(); + + if (selection.isCollapsed || !event.clipboardData) { + return; // default action OK if selection is empty or unchangeable + } + + var clipboardData = event.clipboardData; + var range = selection.getRangeAt(0); // When start point is within a formula, expand to entire formula. + + var startKatex = closestKatex(range.startContainer); + + if (startKatex) { + range.setStartBefore(startKatex); + } // Similarly, when end point is within a formula, expand to entire formula. + + + var endKatex = closestKatex(range.endContainer); + + if (endKatex) { + range.setEndAfter(endKatex); + } + + var fragment = range.cloneContents(); + + if (!fragment.querySelector('.katex-mathml')) { + return; // default action OK if no .katex-mathml elements + } + + var htmlContents = Array.prototype.map.call(fragment.childNodes, el => el instanceof Text ? el.textContent : el.outerHTML).join(''); // Preserve usual HTML copy/paste behavior. + + clipboardData.setData('text/html', htmlContents); // Rewrite plain-text version. + + clipboardData.setData('text/plain', katexReplaceWithTex(fragment).textContent); // Prevent normal copy handling. + + event.preventDefault(); +}); diff --git a/libraries/katex/katex.css b/libraries/katex/katex.css index 258318e10..7f3704ee3 100644 --- a/libraries/katex/katex.css +++ b/libraries/katex/katex.css @@ -127,10 +127,12 @@ } .katex * { -ms-high-contrast-adjust: none !important; +} +.katex * { border-color: currentColor; } .katex .katex-version::after { - content: "0.16.0"; + content: "0.16.9"; } .katex .katex-mathml { /* Accessibility hack to only show to screen readers @@ -209,6 +211,11 @@ .katex .textfrak { font-family: KaTeX_Fraktur; } +.katex .mathboldfrak, +.katex .textboldfrak { + font-family: KaTeX_Fraktur; + font-weight: bold; +} .katex .mathtt { font-family: KaTeX_Typewriter; } diff --git a/libraries/katex/katex.js b/libraries/katex/katex.js index 01e577ba7..568e8f320 100644 --- a/libraries/katex/katex.js +++ b/libraries/katex/katex.js @@ -50,13 +50,19 @@ __webpack_require__.d(__webpack_exports__, { * If possible, a caller should provide a Token or ParseNode with information * about where in the source string the problem occurred. */ -var ParseError = // Error position based on passed-in Token or ParseNode. +var ParseError = // Error start position based on passed-in Token or ParseNode. +// Length of affected text based on passed-in Token or ParseNode. +// The underlying error message without any context added. function ParseError(message, // The error message token // An object providing position information ) { + this.name = void 0; this.position = void 0; + this.length = void 0; + this.rawMessage = void 0; var error = "KaTeX parse error: " + message; var start; + var end; var loc = token && token.loc; if (loc && loc.start <= loc.end) { @@ -65,7 +71,7 @@ token // An object providing position information var input = loc.lexer.input; // Prepend some information start = loc.start; - var end = loc.end; + end = loc.end; if (start === input.length) { error += " at end of input: "; @@ -95,14 +101,20 @@ token // An object providing position information error += left + underlined + right; } // Some hackery to make ParseError a prototype of Error // See http://stackoverflow.com/a/8460753 + // $FlowFixMe var self = new Error(error); self.name = "ParseError"; // $FlowFixMe - self.__proto__ = ParseError.prototype; // $FlowFixMe - + self.__proto__ = ParseError.prototype; self.position = start; + + if (start != null && end != null) { + self.length = end - start; + } + + self.rawMessage = message; return self; }; // $FlowFixMe More hackery @@ -728,49 +740,49 @@ function supportedCodepoint(codepoint) { * It's a storehouse of path geometry for SVG images. */ // In all paths below, the viewBox-to-em scale is 1000:1. -var hLinePad = 80; // padding above a sqrt viniculum. Prevents image cropping. -// The viniculum of a \sqrt can be made thicker by a KaTeX rendering option. -// Think of variable extraViniculum as two detours in the SVG path. -// The detour begins at the lower left of the area labeled extraViniculum below. -// The detour proceeds one extraViniculum distance up and slightly to the right, -// displacing the radiused corner between surd and viniculum. The radius is +var hLinePad = 80; // padding above a sqrt vinculum. Prevents image cropping. +// The vinculum of a \sqrt can be made thicker by a KaTeX rendering option. +// Think of variable extraVinculum as two detours in the SVG path. +// The detour begins at the lower left of the area labeled extraVinculum below. +// The detour proceeds one extraVinculum distance up and slightly to the right, +// displacing the radiused corner between surd and vinculum. The radius is // traversed as usual, then the detour resumes. It goes right, to the end of -// the very long viniculumn, then down one extraViniculum distance, +// the very long vinculum, then down one extraVinculum distance, // after which it resumes regular path geometry for the radical. -/* viniculum +/* vinculum / - /▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒←extraViniculum - / █████████████████████←0.04em (40 unit) std viniculum thickness + /▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒←extraVinculum + / █████████████████████←0.04em (40 unit) std vinculum thickness / / / / / /\ / / surd */ -var sqrtMain = function sqrtMain(extraViniculum, hLinePad) { +var sqrtMain = function sqrtMain(extraVinculum, hLinePad) { // sqrtMain path geometry is from glyph U221A in the font KaTeX Main - return "M95," + (622 + extraViniculum + hLinePad) + "\nc-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5,-10,-9.5,-14\nc0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54\nc44.2,-33.3,65.8,-50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10\ns173,378,173,378c0.7,0,35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429\nc69,-144,104.5,-217.7,106.5,-221\nl" + extraViniculum / 2.075 + " -" + extraViniculum + "\nc5.3,-9.3,12,-14,20,-14\nH400000v" + (40 + extraViniculum) + "H845.2724\ns-225.272,467,-225.272,467s-235,486,-235,486c-2.7,4.7,-9,7,-19,7\nc-6,0,-10,-1,-12,-3s-194,-422,-194,-422s-65,47,-65,47z\nM" + (834 + extraViniculum) + " " + hLinePad + "h400000v" + (40 + extraViniculum) + "h-400000z"; + return "M95," + (622 + extraVinculum + hLinePad) + "\nc-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5,-10,-9.5,-14\nc0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54\nc44.2,-33.3,65.8,-50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10\ns173,378,173,378c0.7,0,35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429\nc69,-144,104.5,-217.7,106.5,-221\nl" + extraVinculum / 2.075 + " -" + extraVinculum + "\nc5.3,-9.3,12,-14,20,-14\nH400000v" + (40 + extraVinculum) + "H845.2724\ns-225.272,467,-225.272,467s-235,486,-235,486c-2.7,4.7,-9,7,-19,7\nc-6,0,-10,-1,-12,-3s-194,-422,-194,-422s-65,47,-65,47z\nM" + (834 + extraVinculum) + " " + hLinePad + "h400000v" + (40 + extraVinculum) + "h-400000z"; }; -var sqrtSize1 = function sqrtSize1(extraViniculum, hLinePad) { +var sqrtSize1 = function sqrtSize1(extraVinculum, hLinePad) { // size1 is from glyph U221A in the font KaTeX_Size1-Regular - return "M263," + (601 + extraViniculum + hLinePad) + "c0.7,0,18,39.7,52,119\nc34,79.3,68.167,158.7,102.5,238c34.3,79.3,51.8,119.3,52.5,120\nc340,-704.7,510.7,-1060.3,512,-1067\nl" + extraViniculum / 2.084 + " -" + extraViniculum + "\nc4.7,-7.3,11,-11,19,-11\nH40000v" + (40 + extraViniculum) + "H1012.3\ns-271.3,567,-271.3,567c-38.7,80.7,-84,175,-136,283c-52,108,-89.167,185.3,-111.5,232\nc-22.3,46.7,-33.8,70.3,-34.5,71c-4.7,4.7,-12.3,7,-23,7s-12,-1,-12,-1\ns-109,-253,-109,-253c-72.7,-168,-109.3,-252,-110,-252c-10.7,8,-22,16.7,-34,26\nc-22,17.3,-33.3,26,-34,26s-26,-26,-26,-26s76,-59,76,-59s76,-60,76,-60z\nM" + (1001 + extraViniculum) + " " + hLinePad + "h400000v" + (40 + extraViniculum) + "h-400000z"; + return "M263," + (601 + extraVinculum + hLinePad) + "c0.7,0,18,39.7,52,119\nc34,79.3,68.167,158.7,102.5,238c34.3,79.3,51.8,119.3,52.5,120\nc340,-704.7,510.7,-1060.3,512,-1067\nl" + extraVinculum / 2.084 + " -" + extraVinculum + "\nc4.7,-7.3,11,-11,19,-11\nH40000v" + (40 + extraVinculum) + "H1012.3\ns-271.3,567,-271.3,567c-38.7,80.7,-84,175,-136,283c-52,108,-89.167,185.3,-111.5,232\nc-22.3,46.7,-33.8,70.3,-34.5,71c-4.7,4.7,-12.3,7,-23,7s-12,-1,-12,-1\ns-109,-253,-109,-253c-72.7,-168,-109.3,-252,-110,-252c-10.7,8,-22,16.7,-34,26\nc-22,17.3,-33.3,26,-34,26s-26,-26,-26,-26s76,-59,76,-59s76,-60,76,-60z\nM" + (1001 + extraVinculum) + " " + hLinePad + "h400000v" + (40 + extraVinculum) + "h-400000z"; }; -var sqrtSize2 = function sqrtSize2(extraViniculum, hLinePad) { +var sqrtSize2 = function sqrtSize2(extraVinculum, hLinePad) { // size2 is from glyph U221A in the font KaTeX_Size2-Regular - return "M983 " + (10 + extraViniculum + hLinePad) + "\nl" + extraViniculum / 3.13 + " -" + extraViniculum + "\nc4,-6.7,10,-10,18,-10 H400000v" + (40 + extraViniculum) + "\nH1013.1s-83.4,268,-264.1,840c-180.7,572,-277,876.3,-289,913c-4.7,4.7,-12.7,7,-24,7\ns-12,0,-12,0c-1.3,-3.3,-3.7,-11.7,-7,-25c-35.3,-125.3,-106.7,-373.3,-214,-744\nc-10,12,-21,25,-33,39s-32,39,-32,39c-6,-5.3,-15,-14,-27,-26s25,-30,25,-30\nc26.7,-32.7,52,-63,76,-91s52,-60,52,-60s208,722,208,722\nc56,-175.3,126.3,-397.3,211,-666c84.7,-268.7,153.8,-488.2,207.5,-658.5\nc53.7,-170.3,84.5,-266.8,92.5,-289.5z\nM" + (1001 + extraViniculum) + " " + hLinePad + "h400000v" + (40 + extraViniculum) + "h-400000z"; + return "M983 " + (10 + extraVinculum + hLinePad) + "\nl" + extraVinculum / 3.13 + " -" + extraVinculum + "\nc4,-6.7,10,-10,18,-10 H400000v" + (40 + extraVinculum) + "\nH1013.1s-83.4,268,-264.1,840c-180.7,572,-277,876.3,-289,913c-4.7,4.7,-12.7,7,-24,7\ns-12,0,-12,0c-1.3,-3.3,-3.7,-11.7,-7,-25c-35.3,-125.3,-106.7,-373.3,-214,-744\nc-10,12,-21,25,-33,39s-32,39,-32,39c-6,-5.3,-15,-14,-27,-26s25,-30,25,-30\nc26.7,-32.7,52,-63,76,-91s52,-60,52,-60s208,722,208,722\nc56,-175.3,126.3,-397.3,211,-666c84.7,-268.7,153.8,-488.2,207.5,-658.5\nc53.7,-170.3,84.5,-266.8,92.5,-289.5z\nM" + (1001 + extraVinculum) + " " + hLinePad + "h400000v" + (40 + extraVinculum) + "h-400000z"; }; -var sqrtSize3 = function sqrtSize3(extraViniculum, hLinePad) { +var sqrtSize3 = function sqrtSize3(extraVinculum, hLinePad) { // size3 is from glyph U221A in the font KaTeX_Size3-Regular - return "M424," + (2398 + extraViniculum + hLinePad) + "\nc-1.3,-0.7,-38.5,-172,-111.5,-514c-73,-342,-109.8,-513.3,-110.5,-514\nc0,-2,-10.7,14.3,-32,49c-4.7,7.3,-9.8,15.7,-15.5,25c-5.7,9.3,-9.8,16,-12.5,20\ns-5,7,-5,7c-4,-3.3,-8.3,-7.7,-13,-13s-13,-13,-13,-13s76,-122,76,-122s77,-121,77,-121\ns209,968,209,968c0,-2,84.7,-361.7,254,-1079c169.3,-717.3,254.7,-1077.7,256,-1081\nl" + extraViniculum / 4.223 + " -" + extraViniculum + "c4,-6.7,10,-10,18,-10 H400000\nv" + (40 + extraViniculum) + "H1014.6\ns-87.3,378.7,-272.6,1166c-185.3,787.3,-279.3,1182.3,-282,1185\nc-2,6,-10,9,-24,9\nc-8,0,-12,-0.7,-12,-2z M" + (1001 + extraViniculum) + " " + hLinePad + "\nh400000v" + (40 + extraViniculum) + "h-400000z"; + return "M424," + (2398 + extraVinculum + hLinePad) + "\nc-1.3,-0.7,-38.5,-172,-111.5,-514c-73,-342,-109.8,-513.3,-110.5,-514\nc0,-2,-10.7,14.3,-32,49c-4.7,7.3,-9.8,15.7,-15.5,25c-5.7,9.3,-9.8,16,-12.5,20\ns-5,7,-5,7c-4,-3.3,-8.3,-7.7,-13,-13s-13,-13,-13,-13s76,-122,76,-122s77,-121,77,-121\ns209,968,209,968c0,-2,84.7,-361.7,254,-1079c169.3,-717.3,254.7,-1077.7,256,-1081\nl" + extraVinculum / 4.223 + " -" + extraVinculum + "c4,-6.7,10,-10,18,-10 H400000\nv" + (40 + extraVinculum) + "H1014.6\ns-87.3,378.7,-272.6,1166c-185.3,787.3,-279.3,1182.3,-282,1185\nc-2,6,-10,9,-24,9\nc-8,0,-12,-0.7,-12,-2z M" + (1001 + extraVinculum) + " " + hLinePad + "\nh400000v" + (40 + extraVinculum) + "h-400000z"; }; -var sqrtSize4 = function sqrtSize4(extraViniculum, hLinePad) { +var sqrtSize4 = function sqrtSize4(extraVinculum, hLinePad) { // size4 is from glyph U221A in the font KaTeX_Size4-Regular - return "M473," + (2713 + extraViniculum + hLinePad) + "\nc339.3,-1799.3,509.3,-2700,510,-2702 l" + extraViniculum / 5.298 + " -" + extraViniculum + "\nc3.3,-7.3,9.3,-11,18,-11 H400000v" + (40 + extraViniculum) + "H1017.7\ns-90.5,478,-276.2,1466c-185.7,988,-279.5,1483,-281.5,1485c-2,6,-10,9,-24,9\nc-8,0,-12,-0.7,-12,-2c0,-1.3,-5.3,-32,-16,-92c-50.7,-293.3,-119.7,-693.3,-207,-1200\nc0,-1.3,-5.3,8.7,-16,30c-10.7,21.3,-21.3,42.7,-32,64s-16,33,-16,33s-26,-26,-26,-26\ns76,-153,76,-153s77,-151,77,-151c0.7,0.7,35.7,202,105,604c67.3,400.7,102,602.7,104,\n606zM" + (1001 + extraViniculum) + " " + hLinePad + "h400000v" + (40 + extraViniculum) + "H1017.7z"; + return "M473," + (2713 + extraVinculum + hLinePad) + "\nc339.3,-1799.3,509.3,-2700,510,-2702 l" + extraVinculum / 5.298 + " -" + extraVinculum + "\nc3.3,-7.3,9.3,-11,18,-11 H400000v" + (40 + extraVinculum) + "H1017.7\ns-90.5,478,-276.2,1466c-185.7,988,-279.5,1483,-281.5,1485c-2,6,-10,9,-24,9\nc-8,0,-12,-0.7,-12,-2c0,-1.3,-5.3,-32,-16,-92c-50.7,-293.3,-119.7,-693.3,-207,-1200\nc0,-1.3,-5.3,8.7,-16,30c-10.7,21.3,-21.3,42.7,-32,64s-16,33,-16,33s-26,-26,-26,-26\ns76,-153,76,-153s77,-151,77,-151c0.7,0.7,35.7,202,105,604c67.3,400.7,102,602.7,104,\n606zM" + (1001 + extraVinculum) + " " + hLinePad + "h400000v" + (40 + extraVinculum) + "H1017.7z"; }; var phasePath = function phasePath(y) { @@ -779,43 +791,43 @@ var phasePath = function phasePath(y) { return "M400000 " + y + " H0 L" + x + " 0 l65 45 L145 " + (y - 80) + " H400000z"; }; -var sqrtTall = function sqrtTall(extraViniculum, hLinePad, viewBoxHeight) { +var sqrtTall = function sqrtTall(extraVinculum, hLinePad, viewBoxHeight) { // sqrtTall is from glyph U23B7 in the font KaTeX_Size4-Regular - // One path edge has a variable length. It runs vertically from the viniculumn - // to a point near (14 units) the bottom of the surd. The viniculum + // One path edge has a variable length. It runs vertically from the vinculum + // to a point near (14 units) the bottom of the surd. The vinculum // is normally 40 units thick. So the length of the line in question is: - var vertSegment = viewBoxHeight - 54 - hLinePad - extraViniculum; - return "M702 " + (extraViniculum + hLinePad) + "H400000" + (40 + extraViniculum) + "\nH742v" + vertSegment + "l-4 4-4 4c-.667.7 -2 1.5-4 2.5s-4.167 1.833-6.5 2.5-5.5 1-9.5 1\nh-12l-28-84c-16.667-52-96.667 -294.333-240-727l-212 -643 -85 170\nc-4-3.333-8.333-7.667-13 -13l-13-13l77-155 77-156c66 199.333 139 419.667\n219 661 l218 661zM702 " + hLinePad + "H400000v" + (40 + extraViniculum) + "H742z"; + var vertSegment = viewBoxHeight - 54 - hLinePad - extraVinculum; + return "M702 " + (extraVinculum + hLinePad) + "H400000" + (40 + extraVinculum) + "\nH742v" + vertSegment + "l-4 4-4 4c-.667.7 -2 1.5-4 2.5s-4.167 1.833-6.5 2.5-5.5 1-9.5 1\nh-12l-28-84c-16.667-52-96.667 -294.333-240-727l-212 -643 -85 170\nc-4-3.333-8.333-7.667-13 -13l-13-13l77-155 77-156c66 199.333 139 419.667\n219 661 l218 661zM702 " + hLinePad + "H400000v" + (40 + extraVinculum) + "H742z"; }; -var sqrtPath = function sqrtPath(size, extraViniculum, viewBoxHeight) { - extraViniculum = 1000 * extraViniculum; // Convert from document ems to viewBox. +var sqrtPath = function sqrtPath(size, extraVinculum, viewBoxHeight) { + extraVinculum = 1000 * extraVinculum; // Convert from document ems to viewBox. var path = ""; switch (size) { case "sqrtMain": - path = sqrtMain(extraViniculum, hLinePad); + path = sqrtMain(extraVinculum, hLinePad); break; case "sqrtSize1": - path = sqrtSize1(extraViniculum, hLinePad); + path = sqrtSize1(extraVinculum, hLinePad); break; case "sqrtSize2": - path = sqrtSize2(extraViniculum, hLinePad); + path = sqrtSize2(extraVinculum, hLinePad); break; case "sqrtSize3": - path = sqrtSize3(extraViniculum, hLinePad); + path = sqrtSize3(extraVinculum, hLinePad); break; case "sqrtSize4": - path = sqrtSize4(extraViniculum, hLinePad); + path = sqrtSize4(extraVinculum, hLinePad); break; case "sqrtTall": - path = sqrtTall(extraViniculum, hLinePad, viewBoxHeight); + path = sqrtTall(extraVinculum, hLinePad, viewBoxHeight); } return path; @@ -921,7 +933,7 @@ var path = { widecheck4: "M1181,340h2l1171,-296c6,0,10,-5,10,-11l-2,-23c-1,-6,-5,-10,\n-11,-10h-1l-1168,273l-1167,-273h-1c-6,0,-10,4,-11,10l-2,23c-1,6,4,11,10,11z", // The next ten paths support reaction arrows from the mhchem package. // Arrows for \ce{<-->} are offset from xAxis by 0.22ex, per mhchem in LaTeX - // baraboveleftarrow is mostly from from glyph U+2190 in font KaTeX Main + // baraboveleftarrow is mostly from glyph U+2190 in font KaTeX Main baraboveleftarrow: "M400000 620h-399890l3 -3c68.7 -52.7 113.7 -120 135 -202\nc4 -14.7 6 -23 6 -25c0 -7.3 -7 -11 -21 -11c-8 0 -13.2 0.8 -15.5 2.5\nc-2.3 1.7 -4.2 5.8 -5.5 12.5c-1.3 4.7 -2.7 10.3 -4 17c-12 48.7 -34.8 92 -68.5 130\ns-74.2 66.3 -121.5 85c-10 4 -16 7.7 -18 11c0 8.7 6 14.3 18 17c47.3 18.7 87.8 47\n121.5 85s56.5 81.3 68.5 130c0.7 2 1.3 5 2 9s1.2 6.7 1.5 8c0.3 1.3 1 3.3 2 6\ns2.2 4.5 3.5 5.5c1.3 1 3.3 1.8 6 2.5s6 1 10 1c14 0 21 -3.7 21 -11\nc0 -2 -2 -10.3 -6 -25c-20 -79.3 -65 -146.7 -135 -202l-3 -3h399890z\nM100 620v40h399900v-40z M0 241v40h399900v-40zM0 241v40h399900v-40z", // rightarrowabovebar is mostly from glyph U+2192, KaTeX Main rightarrowabovebar: "M0 241v40h399891c-47.3 35.3-84 78-110 128-16.7 32\n-27.7 63.7-33 95 0 1.3-.2 2.7-.5 4-.3 1.3-.5 2.3-.5 3 0 7.3 6.7 11 20 11 8 0\n13.2-.8 15.5-2.5 2.3-1.7 4.2-5.5 5.5-11.5 2-13.3 5.7-27 11-41 14.7-44.7 39\n-84.5 73-119.5s73.7-60.2 119-75.5c6-2 9-5.7 9-11s-3-9-9-11c-45.3-15.3-85-40.5\n-119-75.5s-58.3-74.8-73-119.5c-4.7-14-8.3-27.3-11-40-1.3-6.7-3.2-10.8-5.5\n-12.5-2.3-1.7-7.5-2.5-15.5-2.5-14 0-21 3.7-21 11 0 2 2 10.3 6 25 20.7 83.3 67\n151.7 139 205zm96 379h399894v40H0zm0 0h399904v40H0z", @@ -932,6 +944,43 @@ var path = { shortbaraboveleftharpoon: "M7,435c-4,4,-6.3,8.7,-7,14c0,5.3,0.7,9,2,11\nc1.3,2,5.3,5.3,12,10c90.7,54,156,130,196,228c3.3,10.7,6.3,16.3,9,17c2,0.7,5,1,9,\n1c0,0,5,0,5,0c10.7,0,16.7,-2,18,-6c2,-2.7,1,-9.7,-3,-21c-32,-87.3,-82.7,-157.7,\n-152,-211c0,0,-3,-3,-3,-3l399907,0l0,-40c-399126,0,-399993,0,-399993,0z\nM93 435 v40 H400000 v-40z M500 241 v40 H400000 v-40z M500 241 v40 H400000 v-40z", shortrightharpoonabovebar: "M53,241l0,40c398570,0,399437,0,399437,0\nc4.7,-4.7,7,-9.3,7,-14c0,-9.3,-3.7,-15.3,-11,-18c-92.7,-56.7,-159,-133.7,-199,\n-231c-3.3,-9.3,-6,-14.7,-8,-16c-2,-1.3,-7,-2,-15,-2c-10.7,0,-16.7,2,-18,6\nc-2,2.7,-1,9.7,3,21c15.3,42,36.7,81.8,64,119.5c27.3,37.7,58,69.2,92,94.5z\nM500 241 v40 H399408 v-40z M500 435 v40 H400000 v-40z" }; +var tallDelim = function tallDelim(label, midHeight) { + switch (label) { + case "lbrack": + return "M403 1759 V84 H666 V0 H319 V1759 v" + midHeight + " v1759 h347 v-84\nH403z M403 1759 V0 H319 V1759 v" + midHeight + " v1759 h84z"; + + case "rbrack": + return "M347 1759 V0 H0 V84 H263 V1759 v" + midHeight + " v1759 H0 v84 H347z\nM347 1759 V0 H263 V1759 v" + midHeight + " v1759 h84z"; + + case "vert": + return "M145 15 v585 v" + midHeight + " v585 c2.667,10,9.667,15,21,15\nc10,0,16.667,-5,20,-15 v-585 v" + -midHeight + " v-585 c-2.667,-10,-9.667,-15,-21,-15\nc-10,0,-16.667,5,-20,15z M188 15 H145 v585 v" + midHeight + " v585 h43z"; + + case "doublevert": + return "M145 15 v585 v" + midHeight + " v585 c2.667,10,9.667,15,21,15\nc10,0,16.667,-5,20,-15 v-585 v" + -midHeight + " v-585 c-2.667,-10,-9.667,-15,-21,-15\nc-10,0,-16.667,5,-20,15z M188 15 H145 v585 v" + midHeight + " v585 h43z\nM367 15 v585 v" + midHeight + " v585 c2.667,10,9.667,15,21,15\nc10,0,16.667,-5,20,-15 v-585 v" + -midHeight + " v-585 c-2.667,-10,-9.667,-15,-21,-15\nc-10,0,-16.667,5,-20,15z M410 15 H367 v585 v" + midHeight + " v585 h43z"; + + case "lfloor": + return "M319 602 V0 H403 V602 v" + midHeight + " v1715 h263 v84 H319z\nMM319 602 V0 H403 V602 v" + midHeight + " v1715 H319z"; + + case "rfloor": + return "M319 602 V0 H403 V602 v" + midHeight + " v1799 H0 v-84 H319z\nMM319 602 V0 H403 V602 v" + midHeight + " v1715 H319z"; + + case "lceil": + return "M403 1759 V84 H666 V0 H319 V1759 v" + midHeight + " v602 h84z\nM403 1759 V0 H319 V1759 v" + midHeight + " v602 h84z"; + + case "rceil": + return "M347 1759 V0 H0 V84 H263 V1759 v" + midHeight + " v602 h84z\nM347 1759 V0 h-84 V1759 v" + midHeight + " v602 h84z"; + + case "lparen": + return "M863,9c0,-2,-2,-5,-6,-9c0,0,-17,0,-17,0c-12.7,0,-19.3,0.3,-20,1\nc-5.3,5.3,-10.3,11,-15,17c-242.7,294.7,-395.3,682,-458,1162c-21.3,163.3,-33.3,349,\n-36,557 l0," + (midHeight + 84) + "c0.2,6,0,26,0,60c2,159.3,10,310.7,24,454c53.3,528,210,\n949.7,470,1265c4.7,6,9.7,11.7,15,17c0.7,0.7,7,1,19,1c0,0,18,0,18,0c4,-4,6,-7,6,-9\nc0,-2.7,-3.3,-8.7,-10,-18c-135.3,-192.7,-235.5,-414.3,-300.5,-665c-65,-250.7,-102.5,\n-544.7,-112.5,-882c-2,-104,-3,-167,-3,-189\nl0,-" + (midHeight + 92) + "c0,-162.7,5.7,-314,17,-454c20.7,-272,63.7,-513,129,-723c65.3,\n-210,155.3,-396.3,270,-559c6.7,-9.3,10,-15.3,10,-18z"; + + case "rparen": + return "M76,0c-16.7,0,-25,3,-25,9c0,2,2,6.3,6,13c21.3,28.7,42.3,60.3,\n63,95c96.7,156.7,172.8,332.5,228.5,527.5c55.7,195,92.8,416.5,111.5,664.5\nc11.3,139.3,17,290.7,17,454c0,28,1.7,43,3.3,45l0," + (midHeight + 9) + "\nc-3,4,-3.3,16.7,-3.3,38c0,162,-5.7,313.7,-17,455c-18.7,248,-55.8,469.3,-111.5,664\nc-55.7,194.7,-131.8,370.3,-228.5,527c-20.7,34.7,-41.7,66.3,-63,95c-2,3.3,-4,7,-6,11\nc0,7.3,5.7,11,17,11c0,0,11,0,11,0c9.3,0,14.3,-0.3,15,-1c5.3,-5.3,10.3,-11,15,-17\nc242.7,-294.7,395.3,-681.7,458,-1161c21.3,-164.7,33.3,-350.7,36,-558\nl0,-" + (midHeight + 144) + "c-2,-159.3,-10,-310.7,-24,-454c-53.3,-528,-210,-949.7,\n-470,-1265c-4.7,-6,-9.7,-11.7,-15,-17c-0.7,-0.7,-6.7,-1,-18,-1z"; + + default: + // We should not ever get here. + throw new Error("Unknown stretchy delimiter."); + } +}; ;// CONCATENATED MODULE: ./src/tree.js @@ -3096,9 +3145,9 @@ var DocumentFragment = /*#__PURE__*/function () { // In TeX, there are actually three sets of dimensions, one for each of // textstyle (size index 5 and higher: >=9pt), scriptstyle (size index 3 and 4: // 7-8pt), and scriptscriptstyle (size index 1 and 2: 5-6pt). These are -// provided in the the arrays below, in that order. +// provided in the arrays below, in that order. // -// The font metrics are stored in fonts cmsy10, cmsy7, and cmsy5 respsectively. +// The font metrics are stored in fonts cmsy10, cmsy7, and cmsy5 respectively. // This was determined by running the following script: // // latex -interaction=nonstopmode \ @@ -3108,7 +3157,7 @@ var DocumentFragment = /*#__PURE__*/function () { // '\expandafter\show\the\scriptscriptfont2' \ // '\stop' // -// The metrics themselves were retreived using the following commands: +// The metrics themselves were retrieved using the following commands: // // tftopl cmsy10 // tftopl cmsy7 @@ -3320,7 +3369,7 @@ function getCharacterMetrics(character, font, mode) { // So if the character is in a script we support but we // don't have metrics for it, just use the metrics for // the Latin capital letter M. This is close enough because - // we (currently) only care about the height of the glpyh + // we (currently) only care about the height of the glyph // not its width. if (supportedCodepoint(ch)) { metrics = fontMetricsData[font][77]; // 77 is the charcode for 'M' @@ -5162,6 +5211,10 @@ for (var _i3 = 0; _i3 < letters.length; _i3++) { defineSymbol(symbols_text, main, textord, _ch3, wideChar); wideChar = String.fromCharCode(0xD835, 0xDD04 + _i3); // A-Z a-z Fractur + defineSymbol(math, main, mathord, _ch3, wideChar); + defineSymbol(symbols_text, main, textord, _ch3, wideChar); + wideChar = String.fromCharCode(0xD835, 0xDD6C + _i3); // A-Z a-z bold Fractur + defineSymbol(math, main, mathord, _ch3, wideChar); defineSymbol(symbols_text, main, textord, _ch3, wideChar); wideChar = String.fromCharCode(0xD835, 0xDDA0 + _i3); // A-Z a-z sans-serif @@ -5270,8 +5323,9 @@ var wideLatinLetterData = [["mathbf", "textbf", "Main-Bold"], // A-Z bold uprigh ["mathfrak", "textfrak", "Fraktur-Regular"], // a-z Fraktur ["mathbb", "textbb", "AMS-Regular"], // A-Z double-struck ["mathbb", "textbb", "AMS-Regular"], // k double-struck -["", "", ""], // A-Z bold Fraktur No font metrics -["", "", ""], // a-z bold Fraktur. No font. +// Note that we are using a bold font, but font metrics for regular Fraktur. +["mathboldfrak", "textboldfrak", "Fraktur-Regular"], // A-Z bold Fraktur +["mathboldfrak", "textboldfrak", "Fraktur-Regular"], // a-z bold Fraktur ["mathsf", "textsf", "SansSerif-Regular"], // A-Z sans-serif ["mathsf", "textsf", "SansSerif-Regular"], // a-z sans-serif ["mathboldsf", "textboldsf", "SansSerif-Bold"], // A-Z bold sans-serif @@ -5458,13 +5512,18 @@ var makeOrd = function makeOrd(group, options, type) { var isFont = mode === "math" || mode === "text" && options.font; var fontOrFamily = isFont ? options.font : options.fontFamily; + var wideFontName = ""; + var wideFontClass = ""; if (text.charCodeAt(0) === 0xD835) { - // surrogate pairs get special treatment - var _wideCharacterFont = wideCharacterFont(text, mode), - wideFontName = _wideCharacterFont[0], - wideFontClass = _wideCharacterFont[1]; + var _wideCharacterFont = wideCharacterFont(text, mode); + wideFontName = _wideCharacterFont[0]; + wideFontClass = _wideCharacterFont[1]; + } + + if (wideFontName.length > 0) { + // surrogate pairs get special treatment return makeSymbol(text, wideFontName, mode, options, classes.concat(wideFontClass)); } else if (fontOrFamily) { var fontName; @@ -5484,7 +5543,7 @@ var makeOrd = function makeOrd(group, options, type) { if (lookupSymbol(text, fontName, mode).metrics) { return makeSymbol(text, fontName, mode, options, classes.concat(fontClasses)); - } else if (ligatures.hasOwnProperty(text) && fontName.substr(0, 10) === "Typewriter") { + } else if (ligatures.hasOwnProperty(text) && fontName.slice(0, 10) === "Typewriter") { // Deconstruct ligatures in monospace fonts (\texttt, \tt). var parts = []; @@ -6592,7 +6651,7 @@ function buildHTML(tree, options) { * since we're mainly using MathML to improve accessibility, we don't manage * any of the styling state that the plain DOM nodes do. * - * The `toNode` and `toMarkup` functions work simlarly to how they do in + * The `toNode` and `toMarkup` functions work similarly to how they do in * domTree.js, creating namespaced DOM nodes and HTML text markup respectively. */ @@ -6734,7 +6793,7 @@ var TextNode = /*#__PURE__*/function () { } /** * Converts the text node into a string - * (representing the text iteself). + * (representing the text itself). */ ; @@ -6833,7 +6892,7 @@ var SpaceNode = /*#__PURE__*/function () { }); ;// CONCATENATED MODULE: ./src/buildMathML.js /** - * This file converts a parse tree into a cooresponding MathML tree. The main + * This file converts a parse tree into a corresponding MathML tree. The main * entry point is the `buildMathML` function, which takes a parse tree from the * parser. */ @@ -6851,7 +6910,7 @@ var SpaceNode = /*#__PURE__*/function () { * optional replacement from symbols.js. */ var makeText = function makeText(text, mode, options) { - if (src_symbols[mode][text] && src_symbols[mode][text].replace && text.charCodeAt(0) !== 0xD835 && !(ligatures.hasOwnProperty(text) && options && (options.fontFamily && options.fontFamily.substr(4, 2) === "tt" || options.font && options.font.substr(4, 2) === "tt"))) { + if (src_symbols[mode][text] && src_symbols[mode][text].replace && text.charCodeAt(0) !== 0xD835 && !(ligatures.hasOwnProperty(text) && options && (options.fontFamily && options.fontFamily.slice(4, 6) === "tt" || options.font && options.font.slice(4, 6) === "tt"))) { text = src_symbols[mode][text].replace; } @@ -6916,7 +6975,7 @@ var getVariant = function getVariant(group, options) { } else if (font === "mathfrak") { return "fraktur"; } else if (font === "mathscr" || font === "mathcal") { - // MathML makes no distinction between script and caligrahpic + // MathML makes no distinction between script and calligraphic return "script"; } else if (font === "mathsf") { return "sans-serif"; @@ -7307,7 +7366,7 @@ var svgSpan = function svgSpan(group, options) { function buildSvgSpan_() { var viewBoxWidth = 400000; // default - var label = group.label.substr(1); + var label = group.label.slice(1); if (utils.contains(["widehat", "widecheck", "widetilde", "utilde"], label)) { // Each type in the `if` statement corresponds to one of the ParseNode @@ -7877,7 +7936,7 @@ defineFunction({ }; }, // Flow is unable to correctly infer the type of `group`, even though it's - // unamibiguously determined from the passed-in `type` above. + // unambiguously determined from the passed-in `type` above. htmlBuilder: function htmlBuilder(group, options) { var style = options.style; // Build the argument groups in the appropriate style. // Ref: amsmath.dtx: \hbox{$\scriptstyle\mkern#3mu{#6}\mkern#4mu$}% @@ -7976,6 +8035,211 @@ defineFunction({ return node; } }); +;// CONCATENATED MODULE: ./src/functions/mclass.js + + + + + + +var mclass_makeSpan = buildCommon.makeSpan; + +function mclass_htmlBuilder(group, options) { + var elements = buildExpression(group.body, options, true); + return mclass_makeSpan([group.mclass], elements, options); +} + +function mclass_mathmlBuilder(group, options) { + var node; + var inner = buildMathML_buildExpression(group.body, options); + + if (group.mclass === "minner") { + node = new mathMLTree.MathNode("mpadded", inner); + } else if (group.mclass === "mord") { + if (group.isCharacterBox) { + node = inner[0]; + node.type = "mi"; + } else { + node = new mathMLTree.MathNode("mi", inner); + } + } else { + if (group.isCharacterBox) { + node = inner[0]; + node.type = "mo"; + } else { + node = new mathMLTree.MathNode("mo", inner); + } // Set spacing based on what is the most likely adjacent atom type. + // See TeXbook p170. + + + if (group.mclass === "mbin") { + node.attributes.lspace = "0.22em"; // medium space + + node.attributes.rspace = "0.22em"; + } else if (group.mclass === "mpunct") { + node.attributes.lspace = "0em"; + node.attributes.rspace = "0.17em"; // thinspace + } else if (group.mclass === "mopen" || group.mclass === "mclose") { + node.attributes.lspace = "0em"; + node.attributes.rspace = "0em"; + } else if (group.mclass === "minner") { + node.attributes.lspace = "0.0556em"; // 1 mu is the most likely option + + node.attributes.width = "+0.1111em"; + } // MathML default space is 5/18 em, so needs no action. + // Ref: https://developer.mozilla.org/en-US/docs/Web/MathML/Element/mo + + } + + return node; +} // Math class commands except \mathop + + +defineFunction({ + type: "mclass", + names: ["\\mathord", "\\mathbin", "\\mathrel", "\\mathopen", "\\mathclose", "\\mathpunct", "\\mathinner"], + props: { + numArgs: 1, + primitive: true + }, + handler: function handler(_ref, args) { + var parser = _ref.parser, + funcName = _ref.funcName; + var body = args[0]; + return { + type: "mclass", + mode: parser.mode, + mclass: "m" + funcName.slice(5), + // TODO(kevinb): don't prefix with 'm' + body: ordargument(body), + isCharacterBox: utils.isCharacterBox(body) + }; + }, + htmlBuilder: mclass_htmlBuilder, + mathmlBuilder: mclass_mathmlBuilder +}); +var binrelClass = function binrelClass(arg) { + // \binrel@ spacing varies with (bin|rel|ord) of the atom in the argument. + // (by rendering separately and with {}s before and after, and measuring + // the change in spacing). We'll do roughly the same by detecting the + // atom type directly. + var atom = arg.type === "ordgroup" && arg.body.length ? arg.body[0] : arg; + + if (atom.type === "atom" && (atom.family === "bin" || atom.family === "rel")) { + return "m" + atom.family; + } else { + return "mord"; + } +}; // \@binrel{x}{y} renders like y but as mbin/mrel/mord if x is mbin/mrel/mord. +// This is equivalent to \binrel@{x}\binrel@@{y} in AMSTeX. + +defineFunction({ + type: "mclass", + names: ["\\@binrel"], + props: { + numArgs: 2 + }, + handler: function handler(_ref2, args) { + var parser = _ref2.parser; + return { + type: "mclass", + mode: parser.mode, + mclass: binrelClass(args[0]), + body: ordargument(args[1]), + isCharacterBox: utils.isCharacterBox(args[1]) + }; + } +}); // Build a relation or stacked op by placing one symbol on top of another + +defineFunction({ + type: "mclass", + names: ["\\stackrel", "\\overset", "\\underset"], + props: { + numArgs: 2 + }, + handler: function handler(_ref3, args) { + var parser = _ref3.parser, + funcName = _ref3.funcName; + var baseArg = args[1]; + var shiftedArg = args[0]; + var mclass; + + if (funcName !== "\\stackrel") { + // LaTeX applies \binrel spacing to \overset and \underset. + mclass = binrelClass(baseArg); + } else { + mclass = "mrel"; // for \stackrel + } + + var baseOp = { + type: "op", + mode: baseArg.mode, + limits: true, + alwaysHandleSupSub: true, + parentIsSupSub: false, + symbol: false, + suppressBaseShift: funcName !== "\\stackrel", + body: ordargument(baseArg) + }; + var supsub = { + type: "supsub", + mode: shiftedArg.mode, + base: baseOp, + sup: funcName === "\\underset" ? null : shiftedArg, + sub: funcName === "\\underset" ? shiftedArg : null + }; + return { + type: "mclass", + mode: parser.mode, + mclass: mclass, + body: [supsub], + isCharacterBox: utils.isCharacterBox(supsub) + }; + }, + htmlBuilder: mclass_htmlBuilder, + mathmlBuilder: mclass_mathmlBuilder +}); +;// CONCATENATED MODULE: ./src/functions/pmb.js + + + + + + +// \pmb is a simulation of bold font. +// The version of \pmb in ambsy.sty works by typesetting three copies +// with small offsets. We use CSS text-shadow. +// It's a hack. Not as good as a real bold font. Better than nothing. +defineFunction({ + type: "pmb", + names: ["\\pmb"], + props: { + numArgs: 1, + allowedInText: true + }, + handler: function handler(_ref, args) { + var parser = _ref.parser; + return { + type: "pmb", + mode: parser.mode, + mclass: binrelClass(args[0]), + body: ordargument(args[0]) + }; + }, + htmlBuilder: function htmlBuilder(group, options) { + var elements = buildExpression(group.body, options, true); + var node = buildCommon.makeSpan([group.mclass], elements, options); + node.style.textShadow = "0.02em 0.01em 0.04px"; + return node; + }, + mathmlBuilder: function mathmlBuilder(group, style) { + var inner = buildMathML_buildExpression(group.body, style); // Wrap with an element. + + var node = new mathMLTree.MathNode("mstyle", inner); + node.setAttribute("style", "text-shadow: 0.02em 0.01em 0.04px"); + return node; + } +}); ;// CONCATENATED MODULE: ./src/environments/cd.js @@ -8434,13 +8698,12 @@ defineFunction({ names: ["\\\\"], props: { numArgs: 0, - numOptionalArgs: 1, - argTypes: ["size"], + numOptionalArgs: 0, allowedInText: true }, handler: function handler(_ref, args, optArgs) { var parser = _ref.parser; - var size = optArgs[0]; + var size = parser.gullet.future().text === "[" ? parser.parseSizeGroup(true) : null; var newLine = !parser.settings.displayMode || !parser.settings.useStrictBehavior("newLineInDisplayMode", "In LaTeX, \\\\ or \\newline " + "does nothing in display mode"); return { type: "cr", @@ -8885,6 +9148,8 @@ var makeStackedDelim = function makeStackedDelim(delim, heightTotal, center, opt var middle; var repeat; var bottom; + var svgLabel = ""; + var viewBoxWidth = 0; top = repeat = bottom = delim; middle = null; // Also keep track of what font the delimiters are in @@ -8910,44 +9175,64 @@ var makeStackedDelim = function makeStackedDelim(delim, heightTotal, center, opt bottom = "\\Downarrow"; } else if (utils.contains(verts, delim)) { repeat = "\u2223"; + svgLabel = "vert"; + viewBoxWidth = 333; } else if (utils.contains(doubleVerts, delim)) { repeat = "\u2225"; + svgLabel = "doublevert"; + viewBoxWidth = 556; } else if (delim === "[" || delim === "\\lbrack") { top = "\u23A1"; repeat = "\u23A2"; bottom = "\u23A3"; font = "Size4-Regular"; + svgLabel = "lbrack"; + viewBoxWidth = 667; } else if (delim === "]" || delim === "\\rbrack") { top = "\u23A4"; repeat = "\u23A5"; bottom = "\u23A6"; font = "Size4-Regular"; + svgLabel = "rbrack"; + viewBoxWidth = 667; } else if (delim === "\\lfloor" || delim === "\u230A") { repeat = top = "\u23A2"; bottom = "\u23A3"; font = "Size4-Regular"; + svgLabel = "lfloor"; + viewBoxWidth = 667; } else if (delim === "\\lceil" || delim === "\u2308") { top = "\u23A1"; repeat = bottom = "\u23A2"; font = "Size4-Regular"; + svgLabel = "lceil"; + viewBoxWidth = 667; } else if (delim === "\\rfloor" || delim === "\u230B") { repeat = top = "\u23A5"; bottom = "\u23A6"; font = "Size4-Regular"; + svgLabel = "rfloor"; + viewBoxWidth = 667; } else if (delim === "\\rceil" || delim === "\u2309") { top = "\u23A4"; repeat = bottom = "\u23A5"; font = "Size4-Regular"; + svgLabel = "rceil"; + viewBoxWidth = 667; } else if (delim === "(" || delim === "\\lparen") { top = "\u239B"; repeat = "\u239C"; bottom = "\u239D"; font = "Size4-Regular"; + svgLabel = "lparen"; + viewBoxWidth = 875; } else if (delim === ")" || delim === "\\rparen") { top = "\u239E"; repeat = "\u239F"; bottom = "\u23A0"; font = "Size4-Regular"; + svgLabel = "rparen"; + viewBoxWidth = 875; } else if (delim === "\\{" || delim === "\\lbrace") { top = "\u23A7"; middle = "\u23A8"; @@ -8996,7 +9281,7 @@ var makeStackedDelim = function makeStackedDelim(delim, heightTotal, center, opt var middleMetrics = getMetrics(middle, font, mode); middleHeightTotal = middleMetrics.height + middleMetrics.depth; middleFactor = 2; // repeat symmetrically above and below middle - } // Calcuate the minimal height that the delimiter can have. + } // Calculate the minimal height that the delimiter can have. // It is at least the size of the top, bottom, and optional middle combined. @@ -9019,33 +9304,60 @@ var makeStackedDelim = function makeStackedDelim(delim, heightTotal, center, opt var depth = realHeightTotal / 2 - axisHeight; // Now, we start building the pieces that will go into the vlist // Keep a list of the pieces of the stacked delimiter - var stack = []; // Add the bottom symbol + var stack = []; - stack.push(makeGlyphSpan(bottom, font, mode)); - stack.push(lap); // overlap - - if (middle === null) { - // The middle section will be an SVG. Make it an extra 0.016em tall. - // We'll overlap by 0.008em at top and bottom. - var innerHeight = realHeightTotal - topHeightTotal - bottomHeightTotal + 2 * lapInEms; - stack.push(makeInner(repeat, innerHeight, options)); + if (svgLabel.length > 0) { + // Instead of stacking glyphs, create a single SVG. + // This evades browser problems with imprecise positioning of spans. + var midHeight = realHeightTotal - topHeightTotal - bottomHeightTotal; + var viewBoxHeight = Math.round(realHeightTotal * 1000); + var pathStr = tallDelim(svgLabel, Math.round(midHeight * 1000)); + var path = new PathNode(svgLabel, pathStr); + var width = (viewBoxWidth / 1000).toFixed(3) + "em"; + var height = (viewBoxHeight / 1000).toFixed(3) + "em"; + var svg = new SvgNode([path], { + "width": width, + "height": height, + "viewBox": "0 0 " + viewBoxWidth + " " + viewBoxHeight + }); + var wrapper = buildCommon.makeSvgSpan([], [svg], options); + wrapper.height = viewBoxHeight / 1000; + wrapper.style.width = width; + wrapper.style.height = height; + stack.push({ + type: "elem", + elem: wrapper + }); } else { - // When there is a middle bit, we need the middle part and two repeated - // sections - var _innerHeight = (realHeightTotal - topHeightTotal - bottomHeightTotal - middleHeightTotal) / 2 + 2 * lapInEms; + // Stack glyphs + // Start by adding the bottom symbol + stack.push(makeGlyphSpan(bottom, font, mode)); + stack.push(lap); // overlap + + if (middle === null) { + // The middle section will be an SVG. Make it an extra 0.016em tall. + // We'll overlap by 0.008em at top and bottom. + var innerHeight = realHeightTotal - topHeightTotal - bottomHeightTotal + 2 * lapInEms; + stack.push(makeInner(repeat, innerHeight, options)); + } else { + // When there is a middle bit, we need the middle part and two repeated + // sections + var _innerHeight = (realHeightTotal - topHeightTotal - bottomHeightTotal - middleHeightTotal) / 2 + 2 * lapInEms; + + stack.push(makeInner(repeat, _innerHeight, options)); // Now insert the middle of the brace. + + stack.push(lap); + stack.push(makeGlyphSpan(middle, font, mode)); + stack.push(lap); + stack.push(makeInner(repeat, _innerHeight, options)); + } // Add the top symbol - stack.push(makeInner(repeat, _innerHeight, options)); // Now insert the middle of the brace. stack.push(lap); - stack.push(makeGlyphSpan(middle, font, mode)); - stack.push(lap); - stack.push(makeInner(repeat, _innerHeight, options)); - } // Add the top symbol + stack.push(makeGlyphSpan(top, font, mode)); + } // Finally, build the vlist - stack.push(lap); - stack.push(makeGlyphSpan(top, font, mode)); // Finally, build the vlist - var newOptions = options.havingBaseStyle(src_Style.TEXT); var inner = buildCommon.makeVList({ positionType: "bottom", @@ -9053,7 +9365,7 @@ var makeStackedDelim = function makeStackedDelim(delim, heightTotal, center, opt children: stack }, newOptions); return styleWrap(buildCommon.makeSpan(["delimsizing", "mult"], [inner], newOptions), src_Style.TEXT, options, classes); -}; // All surds have 0.08em padding above the viniculum inside the SVG. +}; // All surds have 0.08em padding above the vinculum inside the SVG. // That keeps browser span height rounding error from pinching the line. @@ -9061,8 +9373,8 @@ var vbPad = 80; // padding above the surd, measured inside the viewBox. var emPad = 0.08; // padding, in ems, measured in the document. -var sqrtSvg = function sqrtSvg(sqrtName, height, viewBoxHeight, extraViniculum, options) { - var path = sqrtPath(sqrtName, extraViniculum, viewBoxHeight); +var sqrtSvg = function sqrtSvg(sqrtName, height, viewBoxHeight, extraVinculum, options) { + var path = sqrtPath(sqrtName, extraVinculum, viewBoxHeight); var pathNode = new PathNode(sqrtName, path); var svg = new SvgNode([pathNode], { // Note: 1000:1 ratio of viewBox to document em width. @@ -9085,10 +9397,10 @@ var makeSqrtImage = function makeSqrtImage(height, options) { var delim = traverseSequence("\\surd", height * newOptions.sizeMultiplier, stackLargeDelimiterSequence, newOptions); var sizeMultiplier = newOptions.sizeMultiplier; // default - // The standard sqrt SVGs each have a 0.04em thick viniculum. - // If Settings.minRuleThickness is larger than that, we add extraViniculum. + // The standard sqrt SVGs each have a 0.04em thick vinculum. + // If Settings.minRuleThickness is larger than that, we add extraVinculum. - var extraViniculum = Math.max(0, options.minRuleThickness - options.fontMetrics().sqrtRuleThickness); // Create a span containing an SVG image of a sqrt symbol. + var extraVinculum = Math.max(0, options.minRuleThickness - options.fontMetrics().sqrtRuleThickness); // Create a span containing an SVG image of a sqrt symbol. var span; var spanHeight = 0; @@ -9096,14 +9408,14 @@ var makeSqrtImage = function makeSqrtImage(height, options) { var viewBoxHeight = 0; var advanceWidth; // We create viewBoxes with 80 units of "padding" above each surd. // Then browser rounding error on the parent span height will not - // encroach on the ink of the viniculum. But that padding is not + // encroach on the ink of the vinculum. But that padding is not // included in the TeX-like `height` used for calculation of // vertical alignment. So texHeight = span.height < span.style.height. if (delim.type === "small") { // Get an SVG that is derived from glyph U+221A in font KaTeX-Main. // 1000 unit normal glyph height. - viewBoxHeight = 1000 + 1000 * extraViniculum + vbPad; + viewBoxHeight = 1000 + 1000 * extraVinculum + vbPad; if (height < 1.0) { sizeMultiplier = 1.0; // mimic a \textfont radical @@ -9111,26 +9423,26 @@ var makeSqrtImage = function makeSqrtImage(height, options) { sizeMultiplier = 0.7; // mimic a \scriptfont radical } - spanHeight = (1.0 + extraViniculum + emPad) / sizeMultiplier; - texHeight = (1.00 + extraViniculum) / sizeMultiplier; - span = sqrtSvg("sqrtMain", spanHeight, viewBoxHeight, extraViniculum, options); + spanHeight = (1.0 + extraVinculum + emPad) / sizeMultiplier; + texHeight = (1.00 + extraVinculum) / sizeMultiplier; + span = sqrtSvg("sqrtMain", spanHeight, viewBoxHeight, extraVinculum, options); span.style.minWidth = "0.853em"; advanceWidth = 0.833 / sizeMultiplier; // from the font. } else if (delim.type === "large") { // These SVGs come from fonts: KaTeX_Size1, _Size2, etc. viewBoxHeight = (1000 + vbPad) * sizeToMaxHeight[delim.size]; - texHeight = (sizeToMaxHeight[delim.size] + extraViniculum) / sizeMultiplier; - spanHeight = (sizeToMaxHeight[delim.size] + extraViniculum + emPad) / sizeMultiplier; - span = sqrtSvg("sqrtSize" + delim.size, spanHeight, viewBoxHeight, extraViniculum, options); + texHeight = (sizeToMaxHeight[delim.size] + extraVinculum) / sizeMultiplier; + spanHeight = (sizeToMaxHeight[delim.size] + extraVinculum + emPad) / sizeMultiplier; + span = sqrtSvg("sqrtSize" + delim.size, spanHeight, viewBoxHeight, extraVinculum, options); span.style.minWidth = "1.02em"; advanceWidth = 1.0 / sizeMultiplier; // 1.0 from the font. } else { // Tall sqrt. In TeX, this would be stacked using multiple glyphs. // We'll use a single SVG to accomplish the same thing. - spanHeight = height + extraViniculum + emPad; - texHeight = height + extraViniculum; - viewBoxHeight = Math.floor(1000 * height + extraViniculum) + vbPad; - span = sqrtSvg("sqrtTall", spanHeight, viewBoxHeight, extraViniculum, options); + spanHeight = height + extraVinculum + emPad; + texHeight = height + extraVinculum; + viewBoxHeight = Math.floor(1000 * height + extraVinculum) + vbPad; + span = sqrtSvg("sqrtTall", spanHeight, viewBoxHeight, extraVinculum, options); span.style.minWidth = "0.742em"; advanceWidth = 1.056; } @@ -9144,7 +9456,7 @@ var makeSqrtImage = function makeSqrtImage(height, options) { // This actually should depend on the chosen font -- e.g. \boldmath // should use the thicker surd symbols from e.g. KaTeX_Main-Bold, and // have thicker rules. - ruleWidth: (options.fontMetrics().sqrtRuleThickness + extraViniculum) * sizeMultiplier + ruleWidth: (options.fontMetrics().sqrtRuleThickness + extraVinculum) * sizeMultiplier }; }; // There are three kinds of delimiters, delimiters that stack when they become // too large @@ -9721,7 +10033,7 @@ defineFunction({ return middleDelim; }, mathmlBuilder: function mathmlBuilder(group, options) { - // A Firefox \middle will strech a character vertically only if it + // A Firefox \middle will stretch a character vertically only if it // is in the fence part of the operator dictionary at: // https://www.w3.org/TR/MathML3/appendixc.html. // So we need to avoid U+2223 and use plain "|" instead. @@ -9753,7 +10065,7 @@ var enclose_htmlBuilder = function htmlBuilder(group, options) { // Some groups can return document fragments. Handle those by wrapping // them in a span. var inner = buildCommon.wrapFragment(buildGroup(group.body, options), options); - var label = group.label.substr(1); + var label = group.label.slice(1); var scale = options.sizeMultiplier; var img; var imgShift = 0; // In the LaTeX cancel package, line geometry is slightly different @@ -10235,6 +10547,13 @@ function getHLines(parser) { parser.consumeSpaces(); var nxt = parser.fetch().text; + if (nxt === "\\relax") { + // \relax is an artifact of the \cr macro below + parser.consume(); + parser.consumeSpaces(); + nxt = parser.fetch().text; + } + while (nxt === "\\hline" || nxt === "\\hdashline") { parser.consume(); hlineInfo.push(nxt === "\\hdashline"); @@ -10436,7 +10755,7 @@ function parseArray(parser, _ref, style) { function dCellStyle(envName) { - if (envName.substr(0, 1) === "d") { + if (envName.slice(0, 1) === "d") { return "display"; } else { return "text"; @@ -10783,8 +11102,8 @@ var array_mathmlBuilder = function mathmlBuilder(group, options) { // LaTeX \arraystretch multiplies the row baseline-to-baseline distance. // We simulate this by adding (arraystretch - 1)em to the gap. This // does a reasonable job of adjusting arrays containing 1 em tall content. - // The 0.16 and 0.09 values are found emprically. They produce an array - // similar to LaTeX and in which content does not interfere with \hines. + // The 0.16 and 0.09 values are found empirically. They produce an array + // similar to LaTeX and in which content does not interfere with \hlines. var gap = group.arraystretch === 0.5 ? 0.1 // {smallmatrix}, {subarray} : 0.16 + group.arraystretch - 1 + (group.addJot ? 0.09 : 0); @@ -11400,170 +11719,6 @@ defineFunction({ }; } }); -;// CONCATENATED MODULE: ./src/functions/mclass.js - - - - - - -var mclass_makeSpan = buildCommon.makeSpan; - -function mclass_htmlBuilder(group, options) { - var elements = buildExpression(group.body, options, true); - return mclass_makeSpan([group.mclass], elements, options); -} - -function mclass_mathmlBuilder(group, options) { - var node; - var inner = buildMathML_buildExpression(group.body, options); - - if (group.mclass === "minner") { - node = new mathMLTree.MathNode("mpadded", inner); - } else if (group.mclass === "mord") { - if (group.isCharacterBox) { - node = inner[0]; - node.type = "mi"; - } else { - node = new mathMLTree.MathNode("mi", inner); - } - } else { - if (group.isCharacterBox) { - node = inner[0]; - node.type = "mo"; - } else { - node = new mathMLTree.MathNode("mo", inner); - } // Set spacing based on what is the most likely adjacent atom type. - // See TeXbook p170. - - - if (group.mclass === "mbin") { - node.attributes.lspace = "0.22em"; // medium space - - node.attributes.rspace = "0.22em"; - } else if (group.mclass === "mpunct") { - node.attributes.lspace = "0em"; - node.attributes.rspace = "0.17em"; // thinspace - } else if (group.mclass === "mopen" || group.mclass === "mclose") { - node.attributes.lspace = "0em"; - node.attributes.rspace = "0em"; - } else if (group.mclass === "minner") { - node.attributes.lspace = "0.0556em"; // 1 mu is the most likely option - - node.attributes.width = "+0.1111em"; - } // MathML default space is 5/18 em, so needs no action. - // Ref: https://developer.mozilla.org/en-US/docs/Web/MathML/Element/mo - - } - - return node; -} // Math class commands except \mathop - - -defineFunction({ - type: "mclass", - names: ["\\mathord", "\\mathbin", "\\mathrel", "\\mathopen", "\\mathclose", "\\mathpunct", "\\mathinner"], - props: { - numArgs: 1, - primitive: true - }, - handler: function handler(_ref, args) { - var parser = _ref.parser, - funcName = _ref.funcName; - var body = args[0]; - return { - type: "mclass", - mode: parser.mode, - mclass: "m" + funcName.substr(5), - // TODO(kevinb): don't prefix with 'm' - body: ordargument(body), - isCharacterBox: utils.isCharacterBox(body) - }; - }, - htmlBuilder: mclass_htmlBuilder, - mathmlBuilder: mclass_mathmlBuilder -}); -var binrelClass = function binrelClass(arg) { - // \binrel@ spacing varies with (bin|rel|ord) of the atom in the argument. - // (by rendering separately and with {}s before and after, and measuring - // the change in spacing). We'll do roughly the same by detecting the - // atom type directly. - var atom = arg.type === "ordgroup" && arg.body.length ? arg.body[0] : arg; - - if (atom.type === "atom" && (atom.family === "bin" || atom.family === "rel")) { - return "m" + atom.family; - } else { - return "mord"; - } -}; // \@binrel{x}{y} renders like y but as mbin/mrel/mord if x is mbin/mrel/mord. -// This is equivalent to \binrel@{x}\binrel@@{y} in AMSTeX. - -defineFunction({ - type: "mclass", - names: ["\\@binrel"], - props: { - numArgs: 2 - }, - handler: function handler(_ref2, args) { - var parser = _ref2.parser; - return { - type: "mclass", - mode: parser.mode, - mclass: binrelClass(args[0]), - body: ordargument(args[1]), - isCharacterBox: utils.isCharacterBox(args[1]) - }; - } -}); // Build a relation or stacked op by placing one symbol on top of another - -defineFunction({ - type: "mclass", - names: ["\\stackrel", "\\overset", "\\underset"], - props: { - numArgs: 2 - }, - handler: function handler(_ref3, args) { - var parser = _ref3.parser, - funcName = _ref3.funcName; - var baseArg = args[1]; - var shiftedArg = args[0]; - var mclass; - - if (funcName !== "\\stackrel") { - // LaTeX applies \binrel spacing to \overset and \underset. - mclass = binrelClass(baseArg); - } else { - mclass = "mrel"; // for \stackrel - } - - var baseOp = { - type: "op", - mode: baseArg.mode, - limits: true, - alwaysHandleSupSub: true, - parentIsSupSub: false, - symbol: false, - suppressBaseShift: funcName !== "\\stackrel", - body: ordargument(baseArg) - }; - var supsub = { - type: "supsub", - mode: shiftedArg.mode, - base: baseOp, - sup: funcName === "\\underset" ? null : shiftedArg, - sub: funcName === "\\underset" ? shiftedArg : null - }; - return { - type: "mclass", - mode: parser.mode, - mclass: mclass, - body: [supsub], - isCharacterBox: utils.isCharacterBox(supsub) - }; - }, - htmlBuilder: mclass_htmlBuilder, - mathmlBuilder: mclass_mathmlBuilder -}); ;// CONCATENATED MODULE: ./src/functions/font.js // TODO(kevinb): implement \\sl and \\sc @@ -13188,7 +13343,7 @@ var op_htmlBuilder = function htmlBuilder(grp, options) { if (group.name === "\\oiint" || group.name === "\\oiiint") { // No font glyphs yet, so use a glyph w/o the oval. // TODO: When font glyphs are available, delete this code. - stash = group.name.substr(1); + stash = group.name.slice(1); group.name = stash === "oiint" ? "\\iint" : "\\iiint"; } @@ -14996,6 +15151,7 @@ var functions = _functions; + ;// CONCATENATED MODULE: ./src/Lexer.js @@ -15743,7 +15899,7 @@ defineMacro("\\dots", function (context) { if (next in dotsByToken) { thedots = dotsByToken[next]; - } else if (next.substr(0, 4) === '\\not') { + } else if (next.slice(0, 4) === '\\not') { thedots = '\\dotsb'; } else if (next in src_symbols.math) { if (utils.contains(['bin', 'rel'], src_symbols.math[next].group)) { @@ -15880,12 +16036,7 @@ defineMacro("\\tag@literal", function (context) { defineMacro("\\bmod", "\\mathchoice{\\mskip1mu}{\\mskip1mu}{\\mskip5mu}{\\mskip5mu}" + "\\mathbin{\\rm mod}" + "\\mathchoice{\\mskip1mu}{\\mskip1mu}{\\mskip5mu}{\\mskip5mu}"); defineMacro("\\pod", "\\allowbreak" + "\\mathchoice{\\mkern18mu}{\\mkern8mu}{\\mkern8mu}{\\mkern8mu}(#1)"); defineMacro("\\pmod", "\\pod{{\\rm mod}\\mkern6mu#1}"); -defineMacro("\\mod", "\\allowbreak" + "\\mathchoice{\\mkern18mu}{\\mkern12mu}{\\mkern12mu}{\\mkern12mu}" + "{\\rm mod}\\,\\,#1"); // \pmb -- A simulation of bold. -// The version in ambsy.sty works by typesetting three copies of the argument -// with small offsets. We use two copies. We omit the vertical offset because -// of rendering problems that makeVList encounters in Safari. - -defineMacro("\\pmb", "\\html@mathml{" + "\\@binrel{#1}{\\mathrlap{#1}\\kern0.5px#1}}" + "{\\mathbf{#1}}"); ////////////////////////////////////////////////////////////////////// +defineMacro("\\mod", "\\allowbreak" + "\\mathchoice{\\mkern18mu}{\\mkern12mu}{\\mkern12mu}{\\mkern12mu}" + "{\\rm mod}\\,\\,#1"); ////////////////////////////////////////////////////////////////////// // LaTeX source2e // \expandafter\let\expandafter\@normalcr // \csname\expandafter\@gobble\string\\ \endcsname @@ -16539,15 +16690,15 @@ var MacroExpander = /*#__PURE__*/function () { * Expand the next token only once if possible. * * If the token is expanded, the resulting tokens will be pushed onto - * the stack in reverse order and will be returned as an array, - * also in reverse order. + * the stack in reverse order, and the number of such tokens will be + * returned. This number might be zero or positive. * - * If not, the next token will be returned without removing it - * from the stack. This case can be detected by a `Token` return value - * instead of an `Array` return value. + * If not, the return value is `false`, and the next token remains at the + * top of the stack. * * In either case, the next token will be on the top of the stack, - * or the stack will be empty. + * or the stack will be empty (in case of empty expansion + * and no other tokens). * * Used to implement `expandAfterFuture` and `expandNextToken`. * @@ -16567,7 +16718,7 @@ var MacroExpander = /*#__PURE__*/function () { } this.pushToken(topToken); - return topToken; + return false; } this.expansionCount++; @@ -16610,7 +16761,7 @@ var MacroExpander = /*#__PURE__*/function () { this.pushTokens(tokens); - return tokens; + return tokens.length; } /** * Expand the next token only once (if possible), and return the resulting @@ -16631,16 +16782,16 @@ var MacroExpander = /*#__PURE__*/function () { _proto.expandNextToken = function expandNextToken() { for (;;) { - var expanded = this.expandOnce(); // expandOnce returns Token if and only if it's fully expanded. - - if (expanded instanceof Token) { - // the token after \noexpand is interpreted as if its meaning + if (this.expandOnce() === false) { + // fully expanded + var token = this.stack.pop(); // the token after \noexpand is interpreted as if its meaning // were ‘\relax’ - if (expanded.treatAsRelax) { - expanded.text = "\\relax"; + + if (token.treatAsRelax) { + token.text = "\\relax"; } - return this.stack.pop(); // === expanded + return token; } } // Flow unable to figure out that this pathway is impossible. // https://github.com/facebook/flow/issues/4808 @@ -16670,17 +16821,18 @@ var MacroExpander = /*#__PURE__*/function () { this.pushTokens(tokens); while (this.stack.length > oldStackLength) { - var expanded = this.expandOnce(true); // expand only expandable tokens - // expandOnce returns Token if and only if it's fully expanded. + // Expand only expandable tokens + if (this.expandOnce(true) === false) { + // fully expanded + var token = this.stack.pop(); - if (expanded instanceof Token) { - if (expanded.treatAsRelax) { + if (token.treatAsRelax) { // the expansion of \noexpand is the token itself - expanded.noexpand = false; - expanded.treatAsRelax = false; + token.noexpand = false; + token.treatAsRelax = false; } - output.push(this.stack.pop()); + output.push(token); } } @@ -17457,7 +17609,7 @@ var Parser = /*#__PURE__*/function () { * Parses an "expression", which is a list of atoms. * * `breakOnInfix`: Should the parsing stop when we hit infix nodes? This - * happens when functions have higher precendence han infix + * happens when functions have higher precedence han infix * nodes in implicit parses. * * `breakOnTokenText`: The text of the token that the expression should end @@ -18293,7 +18445,7 @@ var Parser = /*#__PURE__*/function () { this.settings.reportNonstrict("unicodeTextInMathMode", "Accented Unicode text character \"" + text[0] + "\" used in " + "math mode", nucleus); } - text = unicodeSymbols[text[0]] + text.substr(1); + text = unicodeSymbols[text[0]] + text.slice(1); } // Strip off any combining characters @@ -18471,6 +18623,7 @@ var parseTree = function parseTree(toParse, settings) { + /** * Parse and build an expression, and place that expression in the DOM node * given. @@ -18564,7 +18717,7 @@ var renderToHTMLTree = function renderToHTMLTree(expression, options) { /** * Current KaTeX version */ - version: "0.16.0", + version: "0.16.9", /** * Renders the given LaTeX into an HTML+MathML combination, and adds @@ -18629,6 +18782,13 @@ var renderToHTMLTree = function renderToHTMLTree(expression, options) { */ __defineSymbol: defineSymbol, + /** + * adds a new function to builtin function list, + * which directly produce parse tree elements + * and have their own html/mathml builders + */ + __defineFunction: defineFunction, + /** * adds a new macro to builtin macro list */ diff --git a/libraries/katex/katex.min.css b/libraries/katex/katex.min.css index 0d08a4db6..73a8c0a2f 100644 --- a/libraries/katex/katex.min.css +++ b/libraries/katex/katex.min.css @@ -1 +1 @@ -@font-face{font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(fonts/KaTeX_AMS-Regular.woff2) format("woff2"),url(fonts/KaTeX_AMS-Regular.woff) format("woff"),url(fonts/KaTeX_AMS-Regular.ttf) format("truetype")}@font-face{font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(fonts/KaTeX_Caligraphic-Bold.woff2) format("woff2"),url(fonts/KaTeX_Caligraphic-Bold.woff) format("woff"),url(fonts/KaTeX_Caligraphic-Bold.ttf) format("truetype")}@font-face{font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(fonts/KaTeX_Caligraphic-Regular.woff2) format("woff2"),url(fonts/KaTeX_Caligraphic-Regular.woff) format("woff"),url(fonts/KaTeX_Caligraphic-Regular.ttf) format("truetype")}@font-face{font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(fonts/KaTeX_Fraktur-Bold.woff2) format("woff2"),url(fonts/KaTeX_Fraktur-Bold.woff) format("woff"),url(fonts/KaTeX_Fraktur-Bold.ttf) format("truetype")}@font-face{font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(fonts/KaTeX_Fraktur-Regular.woff2) format("woff2"),url(fonts/KaTeX_Fraktur-Regular.woff) format("woff"),url(fonts/KaTeX_Fraktur-Regular.ttf) format("truetype")}@font-face{font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(fonts/KaTeX_Main-Bold.woff2) format("woff2"),url(fonts/KaTeX_Main-Bold.woff) format("woff"),url(fonts/KaTeX_Main-Bold.ttf) format("truetype")}@font-face{font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(fonts/KaTeX_Main-BoldItalic.woff2) format("woff2"),url(fonts/KaTeX_Main-BoldItalic.woff) format("woff"),url(fonts/KaTeX_Main-BoldItalic.ttf) format("truetype")}@font-face{font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(fonts/KaTeX_Main-Italic.woff2) format("woff2"),url(fonts/KaTeX_Main-Italic.woff) format("woff"),url(fonts/KaTeX_Main-Italic.ttf) format("truetype")}@font-face{font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(fonts/KaTeX_Main-Regular.woff2) format("woff2"),url(fonts/KaTeX_Main-Regular.woff) format("woff"),url(fonts/KaTeX_Main-Regular.ttf) format("truetype")}@font-face{font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(fonts/KaTeX_Math-BoldItalic.woff2) format("woff2"),url(fonts/KaTeX_Math-BoldItalic.woff) format("woff"),url(fonts/KaTeX_Math-BoldItalic.ttf) 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Gr("}")),this.gullet.pushTokens(e);var r=this.parseExpression(!1);return this.expect("}"),this.nextToken=t,r},t.parseExpression=function(t,r){for(var n=[];;){"math"===this.mode&&this.consumeSpaces();var a=this.fetch();if(-1!==e.endOfExpression.indexOf(a.text))break;if(r&&a.text===r)break;if(t&&qn[a.text]&&qn[a.text].infix)break;var i=this.parseAtom(r);if(!i)break;"internal"!==i.type&&n.push(i)}return"text"===this.mode&&this.formLigatures(n),this.handleInfixNodes(n)},t.handleInfixNodes=function(e){for(var t,r=-1,a=0;a=0&&this.settings.reportNonstrict("unicodeTextInMathMode",'Latin-1/Unicode text character "'+t[0]+'" used in math mode',e);var s,l=ae[this.mode][t].group,h=Fr.range(e);if(te.hasOwnProperty(l)){var c=l;s={type:"atom",mode:this.mode,family:c,loc:h,text:t}}else s={type:l,mode:this.mode,loc:h,text:t};i=s}else{if(!(t.charCodeAt(0)>=128))return null;this.settings.strict&&(S(t.charCodeAt(0))?"math"===this.mode&&this.settings.reportNonstrict("unicodeTextInMathMode",'Unicode text character "'+t[0]+'" used in math mode',e):this.settings.reportNonstrict("unknownSymbol",'Unrecognized Unicode character "'+t[0]+'" ('+t.charCodeAt(0)+")",e)),i={type:"textord",mode:"text",loc:Fr.range(e),text:t}}if(this.consume(),o)for(var m=0;m} are offset from xAxis by 0.22ex, per mhchem in LaTeX - // baraboveleftarrow is mostly from from glyph U+2190 in font KaTeX Main + // baraboveleftarrow is mostly from glyph U+2190 in font KaTeX Main baraboveleftarrow: "M400000 620h-399890l3 -3c68.7 -52.7 113.7 -120 135 -202\nc4 -14.7 6 -23 6 -25c0 -7.3 -7 -11 -21 -11c-8 0 -13.2 0.8 -15.5 2.5\nc-2.3 1.7 -4.2 5.8 -5.5 12.5c-1.3 4.7 -2.7 10.3 -4 17c-12 48.7 -34.8 92 -68.5 130\ns-74.2 66.3 -121.5 85c-10 4 -16 7.7 -18 11c0 8.7 6 14.3 18 17c47.3 18.7 87.8 47\n121.5 85s56.5 81.3 68.5 130c0.7 2 1.3 5 2 9s1.2 6.7 1.5 8c0.3 1.3 1 3.3 2 6\ns2.2 4.5 3.5 5.5c1.3 1 3.3 1.8 6 2.5s6 1 10 1c14 0 21 -3.7 21 -11\nc0 -2 -2 -10.3 -6 -25c-20 -79.3 -65 -146.7 -135 -202l-3 -3h399890z\nM100 620v40h399900v-40z M0 241v40h399900v-40zM0 241v40h399900v-40z", // rightarrowabovebar is mostly from glyph U+2192, KaTeX Main rightarrowabovebar: "M0 241v40h399891c-47.3 35.3-84 78-110 128-16.7 32\n-27.7 63.7-33 95 0 1.3-.2 2.7-.5 4-.3 1.3-.5 2.3-.5 3 0 7.3 6.7 11 20 11 8 0\n13.2-.8 15.5-2.5 2.3-1.7 4.2-5.5 5.5-11.5 2-13.3 5.7-27 11-41 14.7-44.7 39\n-84.5 73-119.5s73.7-60.2 119-75.5c6-2 9-5.7 9-11s-3-9-9-11c-45.3-15.3-85-40.5\n-119-75.5s-58.3-74.8-73-119.5c-4.7-14-8.3-27.3-11-40-1.3-6.7-3.2-10.8-5.5\n-12.5-2.3-1.7-7.5-2.5-15.5-2.5-14 0-21 3.7-21 11 0 2 2 10.3 6 25 20.7 83.3 67\n151.7 139 205zm96 379h399894v40H0zm0 0h399904v40H0z", @@ -941,6 +953,43 @@ var path = { shortbaraboveleftharpoon: "M7,435c-4,4,-6.3,8.7,-7,14c0,5.3,0.7,9,2,11\nc1.3,2,5.3,5.3,12,10c90.7,54,156,130,196,228c3.3,10.7,6.3,16.3,9,17c2,0.7,5,1,9,\n1c0,0,5,0,5,0c10.7,0,16.7,-2,18,-6c2,-2.7,1,-9.7,-3,-21c-32,-87.3,-82.7,-157.7,\n-152,-211c0,0,-3,-3,-3,-3l399907,0l0,-40c-399126,0,-399993,0,-399993,0z\nM93 435 v40 H400000 v-40z M500 241 v40 H400000 v-40z M500 241 v40 H400000 v-40z", shortrightharpoonabovebar: "M53,241l0,40c398570,0,399437,0,399437,0\nc4.7,-4.7,7,-9.3,7,-14c0,-9.3,-3.7,-15.3,-11,-18c-92.7,-56.7,-159,-133.7,-199,\n-231c-3.3,-9.3,-6,-14.7,-8,-16c-2,-1.3,-7,-2,-15,-2c-10.7,0,-16.7,2,-18,6\nc-2,2.7,-1,9.7,3,21c15.3,42,36.7,81.8,64,119.5c27.3,37.7,58,69.2,92,94.5z\nM500 241 v40 H399408 v-40z M500 435 v40 H400000 v-40z" }; +var tallDelim = function tallDelim(label, midHeight) { + switch (label) { + case "lbrack": + return "M403 1759 V84 H666 V0 H319 V1759 v" + midHeight + " v1759 h347 v-84\nH403z M403 1759 V0 H319 V1759 v" + midHeight + " v1759 h84z"; + + case "rbrack": + return "M347 1759 V0 H0 V84 H263 V1759 v" + midHeight + " v1759 H0 v84 H347z\nM347 1759 V0 H263 V1759 v" + midHeight + " v1759 h84z"; + + case "vert": + return "M145 15 v585 v" + midHeight + " v585 c2.667,10,9.667,15,21,15\nc10,0,16.667,-5,20,-15 v-585 v" + -midHeight + " v-585 c-2.667,-10,-9.667,-15,-21,-15\nc-10,0,-16.667,5,-20,15z M188 15 H145 v585 v" + midHeight + " v585 h43z"; + + case "doublevert": + return "M145 15 v585 v" + midHeight + " v585 c2.667,10,9.667,15,21,15\nc10,0,16.667,-5,20,-15 v-585 v" + -midHeight + " v-585 c-2.667,-10,-9.667,-15,-21,-15\nc-10,0,-16.667,5,-20,15z M188 15 H145 v585 v" + midHeight + " v585 h43z\nM367 15 v585 v" + midHeight + " v585 c2.667,10,9.667,15,21,15\nc10,0,16.667,-5,20,-15 v-585 v" + -midHeight + " v-585 c-2.667,-10,-9.667,-15,-21,-15\nc-10,0,-16.667,5,-20,15z M410 15 H367 v585 v" + midHeight + " v585 h43z"; + + case "lfloor": + return "M319 602 V0 H403 V602 v" + midHeight + " v1715 h263 v84 H319z\nMM319 602 V0 H403 V602 v" + midHeight + " v1715 H319z"; + + case "rfloor": + return "M319 602 V0 H403 V602 v" + midHeight + " v1799 H0 v-84 H319z\nMM319 602 V0 H403 V602 v" + midHeight + " v1715 H319z"; + + case "lceil": + return "M403 1759 V84 H666 V0 H319 V1759 v" + midHeight + " v602 h84z\nM403 1759 V0 H319 V1759 v" + midHeight + " v602 h84z"; + + case "rceil": + return "M347 1759 V0 H0 V84 H263 V1759 v" + midHeight + " v602 h84z\nM347 1759 V0 h-84 V1759 v" + midHeight + " v602 h84z"; + + case "lparen": + return "M863,9c0,-2,-2,-5,-6,-9c0,0,-17,0,-17,0c-12.7,0,-19.3,0.3,-20,1\nc-5.3,5.3,-10.3,11,-15,17c-242.7,294.7,-395.3,682,-458,1162c-21.3,163.3,-33.3,349,\n-36,557 l0," + (midHeight + 84) + "c0.2,6,0,26,0,60c2,159.3,10,310.7,24,454c53.3,528,210,\n949.7,470,1265c4.7,6,9.7,11.7,15,17c0.7,0.7,7,1,19,1c0,0,18,0,18,0c4,-4,6,-7,6,-9\nc0,-2.7,-3.3,-8.7,-10,-18c-135.3,-192.7,-235.5,-414.3,-300.5,-665c-65,-250.7,-102.5,\n-544.7,-112.5,-882c-2,-104,-3,-167,-3,-189\nl0,-" + (midHeight + 92) + "c0,-162.7,5.7,-314,17,-454c20.7,-272,63.7,-513,129,-723c65.3,\n-210,155.3,-396.3,270,-559c6.7,-9.3,10,-15.3,10,-18z"; + + case "rparen": + return "M76,0c-16.7,0,-25,3,-25,9c0,2,2,6.3,6,13c21.3,28.7,42.3,60.3,\n63,95c96.7,156.7,172.8,332.5,228.5,527.5c55.7,195,92.8,416.5,111.5,664.5\nc11.3,139.3,17,290.7,17,454c0,28,1.7,43,3.3,45l0," + (midHeight + 9) + "\nc-3,4,-3.3,16.7,-3.3,38c0,162,-5.7,313.7,-17,455c-18.7,248,-55.8,469.3,-111.5,664\nc-55.7,194.7,-131.8,370.3,-228.5,527c-20.7,34.7,-41.7,66.3,-63,95c-2,3.3,-4,7,-6,11\nc0,7.3,5.7,11,17,11c0,0,11,0,11,0c9.3,0,14.3,-0.3,15,-1c5.3,-5.3,10.3,-11,15,-17\nc242.7,-294.7,395.3,-681.7,458,-1161c21.3,-164.7,33.3,-350.7,36,-558\nl0,-" + (midHeight + 144) + "c-2,-159.3,-10,-310.7,-24,-454c-53.3,-528,-210,-949.7,\n-470,-1265c-4.7,-6,-9.7,-11.7,-15,-17c-0.7,-0.7,-6.7,-1,-18,-1z"; + + default: + // We should not ever get here. + throw new Error("Unknown stretchy delimiter."); + } +}; /** * This node represents a document fragment, which contains elements, but when @@ -3096,9 +3145,9 @@ var fontMetricsData = { // In TeX, there are actually three sets of dimensions, one for each of // textstyle (size index 5 and higher: >=9pt), scriptstyle (size index 3 and 4: // 7-8pt), and scriptscriptstyle (size index 1 and 2: 5-6pt). These are -// provided in the the arrays below, in that order. +// provided in the arrays below, in that order. // -// The font metrics are stored in fonts cmsy10, cmsy7, and cmsy5 respsectively. +// The font metrics are stored in fonts cmsy10, cmsy7, and cmsy5 respectively. // This was determined by running the following script: // // latex -interaction=nonstopmode \ @@ -3108,7 +3157,7 @@ var fontMetricsData = { // '\expandafter\show\the\scriptscriptfont2' \ // '\stop' // -// The metrics themselves were retreived using the following commands: +// The metrics themselves were retrieved using the following commands: // // tftopl cmsy10 // tftopl cmsy7 @@ -3315,7 +3364,7 @@ function getCharacterMetrics(character, font, mode) { // So if the character is in a script we support but we // don't have metrics for it, just use the metrics for // the Latin capital letter M. This is close enough because - // we (currently) only care about the height of the glpyh + // we (currently) only care about the height of the glyph // not its width. if (supportedCodepoint(ch)) { metrics = fontMetricsData[font][77]; // 77 is the charcode for 'M' @@ -5121,6 +5170,10 @@ for (var _i3 = 0; _i3 < letters.length; _i3++) { defineSymbol(text, main, textord, _ch3, wideChar); wideChar = String.fromCharCode(0xD835, 0xDD04 + _i3); // A-Z a-z Fractur + defineSymbol(math, main, mathord, _ch3, wideChar); + defineSymbol(text, main, textord, _ch3, wideChar); + wideChar = String.fromCharCode(0xD835, 0xDD6C + _i3); // A-Z a-z bold Fractur + defineSymbol(math, main, mathord, _ch3, wideChar); defineSymbol(text, main, textord, _ch3, wideChar); wideChar = String.fromCharCode(0xD835, 0xDDA0 + _i3); // A-Z a-z sans-serif @@ -5228,8 +5281,9 @@ var wideLatinLetterData = [["mathbf", "textbf", "Main-Bold"], // A-Z bold uprigh ["mathfrak", "textfrak", "Fraktur-Regular"], // a-z Fraktur ["mathbb", "textbb", "AMS-Regular"], // A-Z double-struck ["mathbb", "textbb", "AMS-Regular"], // k double-struck -["", "", ""], // A-Z bold Fraktur No font metrics -["", "", ""], // a-z bold Fraktur. No font. +// Note that we are using a bold font, but font metrics for regular Fraktur. +["mathboldfrak", "textboldfrak", "Fraktur-Regular"], // A-Z bold Fraktur +["mathboldfrak", "textboldfrak", "Fraktur-Regular"], // a-z bold Fraktur ["mathsf", "textsf", "SansSerif-Regular"], // A-Z sans-serif ["mathsf", "textsf", "SansSerif-Regular"], // a-z sans-serif ["mathboldsf", "textboldsf", "SansSerif-Bold"], // A-Z bold sans-serif @@ -5405,10 +5459,15 @@ var makeOrd = function makeOrd(group, options, type) { var isFont = mode === "math" || mode === "text" && options.font; var fontOrFamily = isFont ? options.font : options.fontFamily; + var wideFontName = ""; + var wideFontClass = ""; if (text.charCodeAt(0) === 0xD835) { + [wideFontName, wideFontClass] = wideCharacterFont(text, mode); + } + + if (wideFontName.length > 0) { // surrogate pairs get special treatment - var [wideFontName, wideFontClass] = wideCharacterFont(text, mode); return makeSymbol(text, wideFontName, mode, options, classes.concat(wideFontClass)); } else if (fontOrFamily) { var fontName; @@ -5428,7 +5487,7 @@ var makeOrd = function makeOrd(group, options, type) { if (lookupSymbol(text, fontName, mode).metrics) { return makeSymbol(text, fontName, mode, options, classes.concat(fontClasses)); - } else if (ligatures.hasOwnProperty(text) && fontName.substr(0, 10) === "Typewriter") { + } else if (ligatures.hasOwnProperty(text) && fontName.slice(0, 10) === "Typewriter") { // Deconstruct ligatures in monospace fonts (\texttt, \tt). var parts = []; @@ -6526,7 +6585,7 @@ function buildHTML(tree, options) { * since we're mainly using MathML to improve accessibility, we don't manage * any of the styling state that the plain DOM nodes do. * - * The `toNode` and `toMarkup` functions work simlarly to how they do in + * The `toNode` and `toMarkup` functions work similarly to how they do in * domTree.js, creating namespaced DOM nodes and HTML text markup respectively. */ function newDocumentFragment(children) { @@ -6657,7 +6716,7 @@ class TextNode { } /** * Converts the text node into a string - * (representing the text iteself). + * (representing the text itself). */ @@ -6752,7 +6811,7 @@ var mathMLTree = { }; /** - * This file converts a parse tree into a cooresponding MathML tree. The main + * This file converts a parse tree into a corresponding MathML tree. The main * entry point is the `buildMathML` function, which takes a parse tree from the * parser. */ @@ -6762,7 +6821,7 @@ var mathMLTree = { * optional replacement from symbols.js. */ var makeText = function makeText(text, mode, options) { - if (symbols[mode][text] && symbols[mode][text].replace && text.charCodeAt(0) !== 0xD835 && !(ligatures.hasOwnProperty(text) && options && (options.fontFamily && options.fontFamily.substr(4, 2) === "tt" || options.font && options.font.substr(4, 2) === "tt"))) { + if (symbols[mode][text] && symbols[mode][text].replace && text.charCodeAt(0) !== 0xD835 && !(ligatures.hasOwnProperty(text) && options && (options.fontFamily && options.fontFamily.slice(4, 6) === "tt" || options.font && options.font.slice(4, 6) === "tt"))) { text = symbols[mode][text].replace; } @@ -6827,7 +6886,7 @@ var getVariant = function getVariant(group, options) { } else if (font === "mathfrak") { return "fraktur"; } else if (font === "mathscr" || font === "mathcal") { - // MathML makes no distinction between script and caligrahpic + // MathML makes no distinction between script and calligraphic return "script"; } else if (font === "mathsf") { return "sans-serif"; @@ -7196,7 +7255,7 @@ var svgSpan = function svgSpan(group, options) { function buildSvgSpan_() { var viewBoxWidth = 400000; // default - var label = group.label.substr(1); + var label = group.label.slice(1); if (utils.contains(["widehat", "widecheck", "widetilde", "utilde"], label)) { // Each type in the `if` statement corresponds to one of the ParseNode @@ -7743,7 +7802,7 @@ defineFunction({ }, // Flow is unable to correctly infer the type of `group`, even though it's - // unamibiguously determined from the passed-in `type` above. + // unambiguously determined from the passed-in `type` above. htmlBuilder(group, options) { var style = options.style; // Build the argument groups in the appropriate style. // Ref: amsmath.dtx: \hbox{$\scriptstyle\mkern#3mu{#6}\mkern#4mu$}% @@ -7845,6 +7904,217 @@ defineFunction({ }); +var makeSpan = buildCommon.makeSpan; + +function htmlBuilder$9(group, options) { + var elements = buildExpression$1(group.body, options, true); + return makeSpan([group.mclass], elements, options); +} + +function mathmlBuilder$8(group, options) { + var node; + var inner = buildExpression(group.body, options); + + if (group.mclass === "minner") { + node = new mathMLTree.MathNode("mpadded", inner); + } else if (group.mclass === "mord") { + if (group.isCharacterBox) { + node = inner[0]; + node.type = "mi"; + } else { + node = new mathMLTree.MathNode("mi", inner); + } + } else { + if (group.isCharacterBox) { + node = inner[0]; + node.type = "mo"; + } else { + node = new mathMLTree.MathNode("mo", inner); + } // Set spacing based on what is the most likely adjacent atom type. + // See TeXbook p170. + + + if (group.mclass === "mbin") { + node.attributes.lspace = "0.22em"; // medium space + + node.attributes.rspace = "0.22em"; + } else if (group.mclass === "mpunct") { + node.attributes.lspace = "0em"; + node.attributes.rspace = "0.17em"; // thinspace + } else if (group.mclass === "mopen" || group.mclass === "mclose") { + node.attributes.lspace = "0em"; + node.attributes.rspace = "0em"; + } else if (group.mclass === "minner") { + node.attributes.lspace = "0.0556em"; // 1 mu is the most likely option + + node.attributes.width = "+0.1111em"; + } // MathML default space is 5/18 em, so needs no action. + // Ref: https://developer.mozilla.org/en-US/docs/Web/MathML/Element/mo + + } + + return node; +} // Math class commands except \mathop + + +defineFunction({ + type: "mclass", + names: ["\\mathord", "\\mathbin", "\\mathrel", "\\mathopen", "\\mathclose", "\\mathpunct", "\\mathinner"], + props: { + numArgs: 1, + primitive: true + }, + + handler(_ref, args) { + var { + parser, + funcName + } = _ref; + var body = args[0]; + return { + type: "mclass", + mode: parser.mode, + mclass: "m" + funcName.slice(5), + // TODO(kevinb): don't prefix with 'm' + body: ordargument(body), + isCharacterBox: utils.isCharacterBox(body) + }; + }, + + htmlBuilder: htmlBuilder$9, + mathmlBuilder: mathmlBuilder$8 +}); +var binrelClass = arg => { + // \binrel@ spacing varies with (bin|rel|ord) of the atom in the argument. + // (by rendering separately and with {}s before and after, and measuring + // the change in spacing). We'll do roughly the same by detecting the + // atom type directly. + var atom = arg.type === "ordgroup" && arg.body.length ? arg.body[0] : arg; + + if (atom.type === "atom" && (atom.family === "bin" || atom.family === "rel")) { + return "m" + atom.family; + } else { + return "mord"; + } +}; // \@binrel{x}{y} renders like y but as mbin/mrel/mord if x is mbin/mrel/mord. +// This is equivalent to \binrel@{x}\binrel@@{y} in AMSTeX. + +defineFunction({ + type: "mclass", + names: ["\\@binrel"], + props: { + numArgs: 2 + }, + + handler(_ref2, args) { + var { + parser + } = _ref2; + return { + type: "mclass", + mode: parser.mode, + mclass: binrelClass(args[0]), + body: ordargument(args[1]), + isCharacterBox: utils.isCharacterBox(args[1]) + }; + } + +}); // Build a relation or stacked op by placing one symbol on top of another + +defineFunction({ + type: "mclass", + names: ["\\stackrel", "\\overset", "\\underset"], + props: { + numArgs: 2 + }, + + handler(_ref3, args) { + var { + parser, + funcName + } = _ref3; + var baseArg = args[1]; + var shiftedArg = args[0]; + var mclass; + + if (funcName !== "\\stackrel") { + // LaTeX applies \binrel spacing to \overset and \underset. + mclass = binrelClass(baseArg); + } else { + mclass = "mrel"; // for \stackrel + } + + var baseOp = { + type: "op", + mode: baseArg.mode, + limits: true, + alwaysHandleSupSub: true, + parentIsSupSub: false, + symbol: false, + suppressBaseShift: funcName !== "\\stackrel", + body: ordargument(baseArg) + }; + var supsub = { + type: "supsub", + mode: shiftedArg.mode, + base: baseOp, + sup: funcName === "\\underset" ? null : shiftedArg, + sub: funcName === "\\underset" ? shiftedArg : null + }; + return { + type: "mclass", + mode: parser.mode, + mclass, + body: [supsub], + isCharacterBox: utils.isCharacterBox(supsub) + }; + }, + + htmlBuilder: htmlBuilder$9, + mathmlBuilder: mathmlBuilder$8 +}); + +// \pmb is a simulation of bold font. +// The version of \pmb in ambsy.sty works by typesetting three copies +// with small offsets. We use CSS text-shadow. +// It's a hack. Not as good as a real bold font. Better than nothing. +defineFunction({ + type: "pmb", + names: ["\\pmb"], + props: { + numArgs: 1, + allowedInText: true + }, + + handler(_ref, args) { + var { + parser + } = _ref; + return { + type: "pmb", + mode: parser.mode, + mclass: binrelClass(args[0]), + body: ordargument(args[0]) + }; + }, + + htmlBuilder(group, options) { + var elements = buildExpression$1(group.body, options, true); + var node = buildCommon.makeSpan([group.mclass], elements, options); + node.style.textShadow = "0.02em 0.01em 0.04px"; + return node; + }, + + mathmlBuilder(group, style) { + var inner = buildExpression(group.body, style); // Wrap with an element. + + var node = new mathMLTree.MathNode("mstyle", inner); + node.setAttribute("style", "text-shadow: 0.02em 0.01em 0.04px"); + return node; + } + +}); + var cdArrowFunctionName = { ">": "\\\\cdrightarrow", "<": "\\\\cdleftarrow", @@ -8218,7 +8488,7 @@ defineFunction({ }); -var htmlBuilder$9 = (group, options) => { +var htmlBuilder$8 = (group, options) => { var elements = buildExpression$1(group.body, options.withColor(group.color), false); // \color isn't supposed to affect the type of the elements it contains. // To accomplish this, we wrap the results in a fragment, so the inner // elements will be able to directly interact with their neighbors. For @@ -8227,7 +8497,7 @@ var htmlBuilder$9 = (group, options) => { return buildCommon.makeFragment(elements); }; -var mathmlBuilder$8 = (group, options) => { +var mathmlBuilder$7 = (group, options) => { var inner = buildExpression(group.body, options.withColor(group.color)); var node = new mathMLTree.MathNode("mstyle", inner); node.setAttribute("mathcolor", group.color); @@ -8257,8 +8527,8 @@ defineFunction({ }; }, - htmlBuilder: htmlBuilder$9, - mathmlBuilder: mathmlBuilder$8 + htmlBuilder: htmlBuilder$8, + mathmlBuilder: mathmlBuilder$7 }); defineFunction({ type: "color", @@ -8290,8 +8560,8 @@ defineFunction({ }; }, - htmlBuilder: htmlBuilder$9, - mathmlBuilder: mathmlBuilder$8 + htmlBuilder: htmlBuilder$8, + mathmlBuilder: mathmlBuilder$7 }); // Row breaks within tabular environments, and line breaks at top level @@ -8301,8 +8571,7 @@ defineFunction({ names: ["\\\\"], props: { numArgs: 0, - numOptionalArgs: 1, - argTypes: ["size"], + numOptionalArgs: 0, allowedInText: true }, @@ -8310,7 +8579,7 @@ defineFunction({ var { parser } = _ref; - var size = optArgs[0]; + var size = parser.gullet.future().text === "[" ? parser.parseSizeGroup(true) : null; var newLine = !parser.settings.displayMode || !parser.settings.useStrictBehavior("newLineInDisplayMode", "In LaTeX, \\\\ or \\newline " + "does nothing in display mode"); return { type: "cr", @@ -8762,6 +9031,8 @@ var makeStackedDelim = function makeStackedDelim(delim, heightTotal, center, opt var middle; var repeat; var bottom; + var svgLabel = ""; + var viewBoxWidth = 0; top = repeat = bottom = delim; middle = null; // Also keep track of what font the delimiters are in @@ -8787,44 +9058,64 @@ var makeStackedDelim = function makeStackedDelim(delim, heightTotal, center, opt bottom = "\\Downarrow"; } else if (utils.contains(verts, delim)) { repeat = "\u2223"; + svgLabel = "vert"; + viewBoxWidth = 333; } else if (utils.contains(doubleVerts, delim)) { repeat = "\u2225"; + svgLabel = "doublevert"; + viewBoxWidth = 556; } else if (delim === "[" || delim === "\\lbrack") { top = "\u23a1"; repeat = "\u23a2"; bottom = "\u23a3"; font = "Size4-Regular"; + svgLabel = "lbrack"; + viewBoxWidth = 667; } else if (delim === "]" || delim === "\\rbrack") { top = "\u23a4"; repeat = "\u23a5"; bottom = "\u23a6"; font = "Size4-Regular"; + svgLabel = "rbrack"; + viewBoxWidth = 667; } else if (delim === "\\lfloor" || delim === "\u230a") { repeat = top = "\u23a2"; bottom = "\u23a3"; font = "Size4-Regular"; + svgLabel = "lfloor"; + viewBoxWidth = 667; } else if (delim === "\\lceil" || delim === "\u2308") { top = "\u23a1"; repeat = bottom = "\u23a2"; font = "Size4-Regular"; + svgLabel = "lceil"; + viewBoxWidth = 667; } else if (delim === "\\rfloor" || delim === "\u230b") { repeat = top = "\u23a5"; bottom = "\u23a6"; font = "Size4-Regular"; + svgLabel = "rfloor"; + viewBoxWidth = 667; } else if (delim === "\\rceil" || delim === "\u2309") { top = "\u23a4"; repeat = bottom = "\u23a5"; font = "Size4-Regular"; + svgLabel = "rceil"; + viewBoxWidth = 667; } else if (delim === "(" || delim === "\\lparen") { top = "\u239b"; repeat = "\u239c"; bottom = "\u239d"; font = "Size4-Regular"; + svgLabel = "lparen"; + viewBoxWidth = 875; } else if (delim === ")" || delim === "\\rparen") { top = "\u239e"; repeat = "\u239f"; bottom = "\u23a0"; font = "Size4-Regular"; + svgLabel = "rparen"; + viewBoxWidth = 875; } else if (delim === "\\{" || delim === "\\lbrace") { top = "\u23a7"; middle = "\u23a8"; @@ -8873,7 +9164,7 @@ var makeStackedDelim = function makeStackedDelim(delim, heightTotal, center, opt var middleMetrics = getMetrics(middle, font, mode); middleHeightTotal = middleMetrics.height + middleMetrics.depth; middleFactor = 2; // repeat symmetrically above and below middle - } // Calcuate the minimal height that the delimiter can have. + } // Calculate the minimal height that the delimiter can have. // It is at least the size of the top, bottom, and optional middle combined. @@ -8896,33 +9187,60 @@ var makeStackedDelim = function makeStackedDelim(delim, heightTotal, center, opt var depth = realHeightTotal / 2 - axisHeight; // Now, we start building the pieces that will go into the vlist // Keep a list of the pieces of the stacked delimiter - var stack = []; // Add the bottom symbol + var stack = []; - stack.push(makeGlyphSpan(bottom, font, mode)); - stack.push(lap); // overlap - - if (middle === null) { - // The middle section will be an SVG. Make it an extra 0.016em tall. - // We'll overlap by 0.008em at top and bottom. - var innerHeight = realHeightTotal - topHeightTotal - bottomHeightTotal + 2 * lapInEms; - stack.push(makeInner(repeat, innerHeight, options)); + if (svgLabel.length > 0) { + // Instead of stacking glyphs, create a single SVG. + // This evades browser problems with imprecise positioning of spans. + var midHeight = realHeightTotal - topHeightTotal - bottomHeightTotal; + var viewBoxHeight = Math.round(realHeightTotal * 1000); + var pathStr = tallDelim(svgLabel, Math.round(midHeight * 1000)); + var path = new PathNode(svgLabel, pathStr); + var width = (viewBoxWidth / 1000).toFixed(3) + "em"; + var height = (viewBoxHeight / 1000).toFixed(3) + "em"; + var svg = new SvgNode([path], { + "width": width, + "height": height, + "viewBox": "0 0 " + viewBoxWidth + " " + viewBoxHeight + }); + var wrapper = buildCommon.makeSvgSpan([], [svg], options); + wrapper.height = viewBoxHeight / 1000; + wrapper.style.width = width; + wrapper.style.height = height; + stack.push({ + type: "elem", + elem: wrapper + }); } else { - // When there is a middle bit, we need the middle part and two repeated - // sections - var _innerHeight = (realHeightTotal - topHeightTotal - bottomHeightTotal - middleHeightTotal) / 2 + 2 * lapInEms; + // Stack glyphs + // Start by adding the bottom symbol + stack.push(makeGlyphSpan(bottom, font, mode)); + stack.push(lap); // overlap + + if (middle === null) { + // The middle section will be an SVG. Make it an extra 0.016em tall. + // We'll overlap by 0.008em at top and bottom. + var innerHeight = realHeightTotal - topHeightTotal - bottomHeightTotal + 2 * lapInEms; + stack.push(makeInner(repeat, innerHeight, options)); + } else { + // When there is a middle bit, we need the middle part and two repeated + // sections + var _innerHeight = (realHeightTotal - topHeightTotal - bottomHeightTotal - middleHeightTotal) / 2 + 2 * lapInEms; + + stack.push(makeInner(repeat, _innerHeight, options)); // Now insert the middle of the brace. + + stack.push(lap); + stack.push(makeGlyphSpan(middle, font, mode)); + stack.push(lap); + stack.push(makeInner(repeat, _innerHeight, options)); + } // Add the top symbol - stack.push(makeInner(repeat, _innerHeight, options)); // Now insert the middle of the brace. stack.push(lap); - stack.push(makeGlyphSpan(middle, font, mode)); - stack.push(lap); - stack.push(makeInner(repeat, _innerHeight, options)); - } // Add the top symbol + stack.push(makeGlyphSpan(top, font, mode)); + } // Finally, build the vlist - stack.push(lap); - stack.push(makeGlyphSpan(top, font, mode)); // Finally, build the vlist - var newOptions = options.havingBaseStyle(Style$1.TEXT); var inner = buildCommon.makeVList({ positionType: "bottom", @@ -8930,7 +9248,7 @@ var makeStackedDelim = function makeStackedDelim(delim, heightTotal, center, opt children: stack }, newOptions); return styleWrap(buildCommon.makeSpan(["delimsizing", "mult"], [inner], newOptions), Style$1.TEXT, options, classes); -}; // All surds have 0.08em padding above the viniculum inside the SVG. +}; // All surds have 0.08em padding above the vinculum inside the SVG. // That keeps browser span height rounding error from pinching the line. @@ -8938,8 +9256,8 @@ var vbPad = 80; // padding above the surd, measured inside the viewBox. var emPad = 0.08; // padding, in ems, measured in the document. -var sqrtSvg = function sqrtSvg(sqrtName, height, viewBoxHeight, extraViniculum, options) { - var path = sqrtPath(sqrtName, extraViniculum, viewBoxHeight); +var sqrtSvg = function sqrtSvg(sqrtName, height, viewBoxHeight, extraVinculum, options) { + var path = sqrtPath(sqrtName, extraVinculum, viewBoxHeight); var pathNode = new PathNode(sqrtName, path); var svg = new SvgNode([pathNode], { // Note: 1000:1 ratio of viewBox to document em width. @@ -8962,10 +9280,10 @@ var makeSqrtImage = function makeSqrtImage(height, options) { var delim = traverseSequence("\\surd", height * newOptions.sizeMultiplier, stackLargeDelimiterSequence, newOptions); var sizeMultiplier = newOptions.sizeMultiplier; // default - // The standard sqrt SVGs each have a 0.04em thick viniculum. - // If Settings.minRuleThickness is larger than that, we add extraViniculum. + // The standard sqrt SVGs each have a 0.04em thick vinculum. + // If Settings.minRuleThickness is larger than that, we add extraVinculum. - var extraViniculum = Math.max(0, options.minRuleThickness - options.fontMetrics().sqrtRuleThickness); // Create a span containing an SVG image of a sqrt symbol. + var extraVinculum = Math.max(0, options.minRuleThickness - options.fontMetrics().sqrtRuleThickness); // Create a span containing an SVG image of a sqrt symbol. var span; var spanHeight = 0; @@ -8973,14 +9291,14 @@ var makeSqrtImage = function makeSqrtImage(height, options) { var viewBoxHeight = 0; var advanceWidth; // We create viewBoxes with 80 units of "padding" above each surd. // Then browser rounding error on the parent span height will not - // encroach on the ink of the viniculum. But that padding is not + // encroach on the ink of the vinculum. But that padding is not // included in the TeX-like `height` used for calculation of // vertical alignment. So texHeight = span.height < span.style.height. if (delim.type === "small") { // Get an SVG that is derived from glyph U+221A in font KaTeX-Main. // 1000 unit normal glyph height. - viewBoxHeight = 1000 + 1000 * extraViniculum + vbPad; + viewBoxHeight = 1000 + 1000 * extraVinculum + vbPad; if (height < 1.0) { sizeMultiplier = 1.0; // mimic a \textfont radical @@ -8988,26 +9306,26 @@ var makeSqrtImage = function makeSqrtImage(height, options) { sizeMultiplier = 0.7; // mimic a \scriptfont radical } - spanHeight = (1.0 + extraViniculum + emPad) / sizeMultiplier; - texHeight = (1.00 + extraViniculum) / sizeMultiplier; - span = sqrtSvg("sqrtMain", spanHeight, viewBoxHeight, extraViniculum, options); + spanHeight = (1.0 + extraVinculum + emPad) / sizeMultiplier; + texHeight = (1.00 + extraVinculum) / sizeMultiplier; + span = sqrtSvg("sqrtMain", spanHeight, viewBoxHeight, extraVinculum, options); span.style.minWidth = "0.853em"; advanceWidth = 0.833 / sizeMultiplier; // from the font. } else if (delim.type === "large") { // These SVGs come from fonts: KaTeX_Size1, _Size2, etc. viewBoxHeight = (1000 + vbPad) * sizeToMaxHeight[delim.size]; - texHeight = (sizeToMaxHeight[delim.size] + extraViniculum) / sizeMultiplier; - spanHeight = (sizeToMaxHeight[delim.size] + extraViniculum + emPad) / sizeMultiplier; - span = sqrtSvg("sqrtSize" + delim.size, spanHeight, viewBoxHeight, extraViniculum, options); + texHeight = (sizeToMaxHeight[delim.size] + extraVinculum) / sizeMultiplier; + spanHeight = (sizeToMaxHeight[delim.size] + extraVinculum + emPad) / sizeMultiplier; + span = sqrtSvg("sqrtSize" + delim.size, spanHeight, viewBoxHeight, extraVinculum, options); span.style.minWidth = "1.02em"; advanceWidth = 1.0 / sizeMultiplier; // 1.0 from the font. } else { // Tall sqrt. In TeX, this would be stacked using multiple glyphs. // We'll use a single SVG to accomplish the same thing. - spanHeight = height + extraViniculum + emPad; - texHeight = height + extraViniculum; - viewBoxHeight = Math.floor(1000 * height + extraViniculum) + vbPad; - span = sqrtSvg("sqrtTall", spanHeight, viewBoxHeight, extraViniculum, options); + spanHeight = height + extraVinculum + emPad; + texHeight = height + extraVinculum; + viewBoxHeight = Math.floor(1000 * height + extraVinculum) + vbPad; + span = sqrtSvg("sqrtTall", spanHeight, viewBoxHeight, extraVinculum, options); span.style.minWidth = "0.742em"; advanceWidth = 1.056; } @@ -9021,7 +9339,7 @@ var makeSqrtImage = function makeSqrtImage(height, options) { // This actually should depend on the chosen font -- e.g. \boldmath // should use the thicker surd symbols from e.g. KaTeX_Main-Bold, and // have thicker rules. - ruleWidth: (options.fontMetrics().sqrtRuleThickness + extraViniculum) * sizeMultiplier + ruleWidth: (options.fontMetrics().sqrtRuleThickness + extraVinculum) * sizeMultiplier }; }; // There are three kinds of delimiters, delimiters that stack when they become // too large @@ -9588,7 +9906,7 @@ defineFunction({ return middleDelim; }, mathmlBuilder: (group, options) => { - // A Firefox \middle will strech a character vertically only if it + // A Firefox \middle will stretch a character vertically only if it // is in the fence part of the operator dictionary at: // https://www.w3.org/TR/MathML3/appendixc.html. // So we need to avoid U+2223 and use plain "|" instead. @@ -9603,12 +9921,12 @@ defineFunction({ } }); -var htmlBuilder$8 = (group, options) => { +var htmlBuilder$7 = (group, options) => { // \cancel, \bcancel, \xcancel, \sout, \fbox, \colorbox, \fcolorbox, \phase // Some groups can return document fragments. Handle those by wrapping // them in a span. var inner = buildCommon.wrapFragment(buildGroup$1(group.body, options), options); - var label = group.label.substr(1); + var label = group.label.slice(1); var scale = options.sizeMultiplier; var img; var imgShift = 0; // In the LaTeX cancel package, line geometry is slightly different @@ -9755,7 +10073,7 @@ var htmlBuilder$8 = (group, options) => { } }; -var mathmlBuilder$7 = (group, options) => { +var mathmlBuilder$6 = (group, options) => { var fboxsep = 0; var node = new mathMLTree.MathNode(group.label.indexOf("colorbox") > -1 ? "mpadded" : "menclose", [buildGroup(group.body, options)]); @@ -9841,8 +10159,8 @@ defineFunction({ }; }, - htmlBuilder: htmlBuilder$8, - mathmlBuilder: mathmlBuilder$7 + htmlBuilder: htmlBuilder$7, + mathmlBuilder: mathmlBuilder$6 }); defineFunction({ type: "enclose", @@ -9871,8 +10189,8 @@ defineFunction({ }; }, - htmlBuilder: htmlBuilder$8, - mathmlBuilder: mathmlBuilder$7 + htmlBuilder: htmlBuilder$7, + mathmlBuilder: mathmlBuilder$6 }); defineFunction({ type: "enclose", @@ -9917,8 +10235,8 @@ defineFunction({ }; }, - htmlBuilder: htmlBuilder$8, - mathmlBuilder: mathmlBuilder$7 + htmlBuilder: htmlBuilder$7, + mathmlBuilder: mathmlBuilder$6 }); defineFunction({ type: "enclose", @@ -10002,6 +10320,13 @@ function getHLines(parser) { parser.consumeSpaces(); var nxt = parser.fetch().text; + if (nxt === "\\relax") { + // \relax is an artifact of the \cr macro below + parser.consume(); + parser.consumeSpaces(); + nxt = parser.fetch().text; + } + while (nxt === "\\hline" || nxt === "\\hdashline") { parser.consume(); hlineInfo.push(nxt === "\\hdashline"); @@ -10205,14 +10530,14 @@ function parseArray(parser, _ref, style) { function dCellStyle(envName) { - if (envName.substr(0, 1) === "d") { + if (envName.slice(0, 1) === "d") { return "display"; } else { return "text"; } } -var htmlBuilder$7 = function htmlBuilder(group, options) { +var htmlBuilder$6 = function htmlBuilder(group, options) { var r; var c; var nr = group.body.length; @@ -10515,7 +10840,7 @@ var alignMap = { r: "right " }; -var mathmlBuilder$6 = function mathmlBuilder(group, options) { +var mathmlBuilder$5 = function mathmlBuilder(group, options) { var tbl = []; var glue = new mathMLTree.MathNode("mtd", [], ["mtr-glue"]); var tag = new mathMLTree.MathNode("mtd", [], ["mml-eqn-num"]); @@ -10550,8 +10875,8 @@ var mathmlBuilder$6 = function mathmlBuilder(group, options) { // LaTeX \arraystretch multiplies the row baseline-to-baseline distance. // We simulate this by adding (arraystretch - 1)em to the gap. This // does a reasonable job of adjusting arrays containing 1 em tall content. - // The 0.16 and 0.09 values are found emprically. They produce an array - // similar to LaTeX and in which content does not interfere with \hines. + // The 0.16 and 0.09 values are found empirically. They produce an array + // similar to LaTeX and in which content does not interfere with \hlines. var gap = group.arraystretch === 0.5 ? 0.1 // {smallmatrix}, {subarray} : 0.16 + group.arraystretch - 1 + (group.addJot ? 0.09 : 0); @@ -10799,8 +11124,8 @@ defineEnvironment({ return parseArray(context.parser, res, dCellStyle(context.envName)); }, - htmlBuilder: htmlBuilder$7, - mathmlBuilder: mathmlBuilder$6 + htmlBuilder: htmlBuilder$6, + mathmlBuilder: mathmlBuilder$5 }); // The matrix environments of amsmath builds on the array environment // of LaTeX, which is discussed above. // The mathtools package adds starred versions of the same environments. @@ -10876,8 +11201,8 @@ defineEnvironment({ } : res; }, - htmlBuilder: htmlBuilder$7, - mathmlBuilder: mathmlBuilder$6 + htmlBuilder: htmlBuilder$6, + mathmlBuilder: mathmlBuilder$5 }); defineEnvironment({ type: "array", @@ -10895,8 +11220,8 @@ defineEnvironment({ return res; }, - htmlBuilder: htmlBuilder$7, - mathmlBuilder: mathmlBuilder$6 + htmlBuilder: htmlBuilder$6, + mathmlBuilder: mathmlBuilder$5 }); defineEnvironment({ type: "array", @@ -10941,8 +11266,8 @@ defineEnvironment({ return res; }, - htmlBuilder: htmlBuilder$7, - mathmlBuilder: mathmlBuilder$6 + htmlBuilder: htmlBuilder$6, + mathmlBuilder: mathmlBuilder$5 }); // A cases environment (in amsmath.sty) is almost equivalent to // \def\arraystretch{1.2}% // \left\{\begin{array}{@{}l@{\quad}l@{}} … \end{array}\right. @@ -10989,8 +11314,8 @@ defineEnvironment({ }; }, - htmlBuilder: htmlBuilder$7, - mathmlBuilder: mathmlBuilder$6 + htmlBuilder: htmlBuilder$6, + mathmlBuilder: mathmlBuilder$5 }); // In the align environment, one uses ampersands, &, to specify number of // columns in each row, and to locate spacing between each column. // align gets automatic numbering. align* and aligned do not. @@ -11005,8 +11330,8 @@ defineEnvironment({ numArgs: 0 }, handler: alignedHandler, - htmlBuilder: htmlBuilder$7, - mathmlBuilder: mathmlBuilder$6 + htmlBuilder: htmlBuilder$6, + mathmlBuilder: mathmlBuilder$5 }); // A gathered environment is like an array environment with one centered // column, but where rows are considered lines so get \jot line spacing // and contents are set in \displaystyle. @@ -11037,8 +11362,8 @@ defineEnvironment({ return parseArray(context.parser, res, "display"); }, - htmlBuilder: htmlBuilder$7, - mathmlBuilder: mathmlBuilder$6 + htmlBuilder: htmlBuilder$6, + mathmlBuilder: mathmlBuilder$5 }); // alignat environment is like an align environment, but one must explicitly // specify maximum number of columns in each row, and can adjust spacing between // each columns. @@ -11050,8 +11375,8 @@ defineEnvironment({ numArgs: 1 }, handler: alignedHandler, - htmlBuilder: htmlBuilder$7, - mathmlBuilder: mathmlBuilder$6 + htmlBuilder: htmlBuilder$6, + mathmlBuilder: mathmlBuilder$5 }); defineEnvironment({ type: "array", @@ -11072,8 +11397,8 @@ defineEnvironment({ return parseArray(context.parser, res, "display"); }, - htmlBuilder: htmlBuilder$7, - mathmlBuilder: mathmlBuilder$6 + htmlBuilder: htmlBuilder$6, + mathmlBuilder: mathmlBuilder$5 }); defineEnvironment({ type: "array", @@ -11087,8 +11412,8 @@ defineEnvironment({ return parseCD(context.parser); }, - htmlBuilder: htmlBuilder$7, - mathmlBuilder: mathmlBuilder$6 + htmlBuilder: htmlBuilder$6, + mathmlBuilder: mathmlBuilder$5 }); defineMacro("\\nonumber", "\\gdef\\@eqnsw{0}"); defineMacro("\\notag", "\\nonumber"); // Catch \hline outside array environment @@ -11179,176 +11504,6 @@ defineFunction({ }); -var makeSpan = buildCommon.makeSpan; - -function htmlBuilder$6(group, options) { - var elements = buildExpression$1(group.body, options, true); - return makeSpan([group.mclass], elements, options); -} - -function mathmlBuilder$5(group, options) { - var node; - var inner = buildExpression(group.body, options); - - if (group.mclass === "minner") { - node = new mathMLTree.MathNode("mpadded", inner); - } else if (group.mclass === "mord") { - if (group.isCharacterBox) { - node = inner[0]; - node.type = "mi"; - } else { - node = new mathMLTree.MathNode("mi", inner); - } - } else { - if (group.isCharacterBox) { - node = inner[0]; - node.type = "mo"; - } else { - node = new mathMLTree.MathNode("mo", inner); - } // Set spacing based on what is the most likely adjacent atom type. - // See TeXbook p170. - - - if (group.mclass === "mbin") { - node.attributes.lspace = "0.22em"; // medium space - - node.attributes.rspace = "0.22em"; - } else if (group.mclass === "mpunct") { - node.attributes.lspace = "0em"; - node.attributes.rspace = "0.17em"; // thinspace - } else if (group.mclass === "mopen" || group.mclass === "mclose") { - node.attributes.lspace = "0em"; - node.attributes.rspace = "0em"; - } else if (group.mclass === "minner") { - node.attributes.lspace = "0.0556em"; // 1 mu is the most likely option - - node.attributes.width = "+0.1111em"; - } // MathML default space is 5/18 em, so needs no action. - // Ref: https://developer.mozilla.org/en-US/docs/Web/MathML/Element/mo - - } - - return node; -} // Math class commands except \mathop - - -defineFunction({ - type: "mclass", - names: ["\\mathord", "\\mathbin", "\\mathrel", "\\mathopen", "\\mathclose", "\\mathpunct", "\\mathinner"], - props: { - numArgs: 1, - primitive: true - }, - - handler(_ref, args) { - var { - parser, - funcName - } = _ref; - var body = args[0]; - return { - type: "mclass", - mode: parser.mode, - mclass: "m" + funcName.substr(5), - // TODO(kevinb): don't prefix with 'm' - body: ordargument(body), - isCharacterBox: utils.isCharacterBox(body) - }; - }, - - htmlBuilder: htmlBuilder$6, - mathmlBuilder: mathmlBuilder$5 -}); -var binrelClass = arg => { - // \binrel@ spacing varies with (bin|rel|ord) of the atom in the argument. - // (by rendering separately and with {}s before and after, and measuring - // the change in spacing). We'll do roughly the same by detecting the - // atom type directly. - var atom = arg.type === "ordgroup" && arg.body.length ? arg.body[0] : arg; - - if (atom.type === "atom" && (atom.family === "bin" || atom.family === "rel")) { - return "m" + atom.family; - } else { - return "mord"; - } -}; // \@binrel{x}{y} renders like y but as mbin/mrel/mord if x is mbin/mrel/mord. -// This is equivalent to \binrel@{x}\binrel@@{y} in AMSTeX. - -defineFunction({ - type: "mclass", - names: ["\\@binrel"], - props: { - numArgs: 2 - }, - - handler(_ref2, args) { - var { - parser - } = _ref2; - return { - type: "mclass", - mode: parser.mode, - mclass: binrelClass(args[0]), - body: ordargument(args[1]), - isCharacterBox: utils.isCharacterBox(args[1]) - }; - } - -}); // Build a relation or stacked op by placing one symbol on top of another - -defineFunction({ - type: "mclass", - names: ["\\stackrel", "\\overset", "\\underset"], - props: { - numArgs: 2 - }, - - handler(_ref3, args) { - var { - parser, - funcName - } = _ref3; - var baseArg = args[1]; - var shiftedArg = args[0]; - var mclass; - - if (funcName !== "\\stackrel") { - // LaTeX applies \binrel spacing to \overset and \underset. - mclass = binrelClass(baseArg); - } else { - mclass = "mrel"; // for \stackrel - } - - var baseOp = { - type: "op", - mode: baseArg.mode, - limits: true, - alwaysHandleSupSub: true, - parentIsSupSub: false, - symbol: false, - suppressBaseShift: funcName !== "\\stackrel", - body: ordargument(baseArg) - }; - var supsub = { - type: "supsub", - mode: shiftedArg.mode, - base: baseOp, - sup: funcName === "\\underset" ? null : shiftedArg, - sub: funcName === "\\underset" ? shiftedArg : null - }; - return { - type: "mclass", - mode: parser.mode, - mclass, - body: [supsub], - isCharacterBox: utils.isCharacterBox(supsub) - }; - }, - - htmlBuilder: htmlBuilder$6, - mathmlBuilder: mathmlBuilder$5 -}); - // TODO(kevinb): implement \\sl and \\sc var htmlBuilder$5 = (group, options) => { @@ -12946,7 +13101,7 @@ var htmlBuilder$2 = (grp, options) => { if (group.name === "\\oiint" || group.name === "\\oiiint") { // No font glyphs yet, so use a glyph w/o the oval. // TODO: When font glyphs are available, delete this code. - stash = group.name.substr(1); + stash = group.name.slice(1); group.name = stash === "oiint" ? "\\iint" : "\\iiint"; } @@ -15407,7 +15562,7 @@ defineMacro("\\dots", function (context) { if (next in dotsByToken) { thedots = dotsByToken[next]; - } else if (next.substr(0, 4) === '\\not') { + } else if (next.slice(0, 4) === '\\not') { thedots = '\\dotsb'; } else if (next in symbols.math) { if (utils.contains(['bin', 'rel'], symbols.math[next].group)) { @@ -15544,12 +15699,7 @@ defineMacro("\\tag@literal", context => { defineMacro("\\bmod", "\\mathchoice{\\mskip1mu}{\\mskip1mu}{\\mskip5mu}{\\mskip5mu}" + "\\mathbin{\\rm mod}" + "\\mathchoice{\\mskip1mu}{\\mskip1mu}{\\mskip5mu}{\\mskip5mu}"); defineMacro("\\pod", "\\allowbreak" + "\\mathchoice{\\mkern18mu}{\\mkern8mu}{\\mkern8mu}{\\mkern8mu}(#1)"); defineMacro("\\pmod", "\\pod{{\\rm mod}\\mkern6mu#1}"); -defineMacro("\\mod", "\\allowbreak" + "\\mathchoice{\\mkern18mu}{\\mkern12mu}{\\mkern12mu}{\\mkern12mu}" + "{\\rm mod}\\,\\,#1"); // \pmb -- A simulation of bold. -// The version in ambsy.sty works by typesetting three copies of the argument -// with small offsets. We use two copies. We omit the vertical offset because -// of rendering problems that makeVList encounters in Safari. - -defineMacro("\\pmb", "\\html@mathml{" + "\\@binrel{#1}{\\mathrlap{#1}\\kern0.5px#1}}" + "{\\mathbf{#1}}"); ////////////////////////////////////////////////////////////////////// +defineMacro("\\mod", "\\allowbreak" + "\\mathchoice{\\mkern18mu}{\\mkern12mu}{\\mkern12mu}{\\mkern12mu}" + "{\\rm mod}\\,\\,#1"); ////////////////////////////////////////////////////////////////////// // LaTeX source2e // \expandafter\let\expandafter\@normalcr // \csname\expandafter\@gobble\string\\ \endcsname @@ -16188,15 +16338,15 @@ class MacroExpander { * Expand the next token only once if possible. * * If the token is expanded, the resulting tokens will be pushed onto - * the stack in reverse order and will be returned as an array, - * also in reverse order. + * the stack in reverse order, and the number of such tokens will be + * returned. This number might be zero or positive. * - * If not, the next token will be returned without removing it - * from the stack. This case can be detected by a `Token` return value - * instead of an `Array` return value. + * If not, the return value is `false`, and the next token remains at the + * top of the stack. * * In either case, the next token will be on the top of the stack, - * or the stack will be empty. + * or the stack will be empty (in case of empty expansion + * and no other tokens). * * Used to implement `expandAfterFuture` and `expandNextToken`. * @@ -16216,7 +16366,7 @@ class MacroExpander { } this.pushToken(topToken); - return topToken; + return false; } this.expansionCount++; @@ -16257,7 +16407,7 @@ class MacroExpander { this.pushTokens(tokens); - return tokens; + return tokens.length; } /** * Expand the next token only once (if possible), and return the resulting @@ -16278,16 +16428,16 @@ class MacroExpander { expandNextToken() { for (;;) { - var expanded = this.expandOnce(); // expandOnce returns Token if and only if it's fully expanded. - - if (expanded instanceof Token) { - // the token after \noexpand is interpreted as if its meaning + if (this.expandOnce() === false) { + // fully expanded + var token = this.stack.pop(); // the token after \noexpand is interpreted as if its meaning // were ‘\relax’ - if (expanded.treatAsRelax) { - expanded.text = "\\relax"; + + if (token.treatAsRelax) { + token.text = "\\relax"; } - return this.stack.pop(); // === expanded + return token; } } // Flow unable to figure out that this pathway is impossible. // https://github.com/facebook/flow/issues/4808 @@ -16317,17 +16467,18 @@ class MacroExpander { this.pushTokens(tokens); while (this.stack.length > oldStackLength) { - var expanded = this.expandOnce(true); // expand only expandable tokens - // expandOnce returns Token if and only if it's fully expanded. + // Expand only expandable tokens + if (this.expandOnce(true) === false) { + // fully expanded + var token = this.stack.pop(); - if (expanded instanceof Token) { - if (expanded.treatAsRelax) { + if (token.treatAsRelax) { // the expansion of \noexpand is the token itself - expanded.noexpand = false; - expanded.treatAsRelax = false; + token.noexpand = false; + token.treatAsRelax = false; } - output.push(this.stack.pop()); + output.push(token); } } @@ -17086,7 +17237,7 @@ class Parser { * Parses an "expression", which is a list of atoms. * * `breakOnInfix`: Should the parsing stop when we hit infix nodes? This - * happens when functions have higher precendence han infix + * happens when functions have higher precedence han infix * nodes in implicit parses. * * `breakOnTokenText`: The text of the token that the expression should end @@ -17922,7 +18073,7 @@ class Parser { this.settings.reportNonstrict("unicodeTextInMathMode", "Accented Unicode text character \"" + text[0] + "\" used in " + "math mode", nucleus); } - text = unicodeSymbols[text[0]] + text.substr(1); + text = unicodeSymbols[text[0]] + text.slice(1); } // Strip off any combining characters @@ -18168,7 +18319,7 @@ var katex = { /** * Current KaTeX version */ - version: "0.16.0", + version: "0.16.9", /** * Renders the given LaTeX into an HTML+MathML combination, and adds @@ -18233,6 +18384,13 @@ var katex = { */ __defineSymbol: defineSymbol, + /** + * adds a new function to builtin function list, + * which directly produce parse tree elements + * and have their own html/mathml builders + */ + __defineFunction: defineFunction, + /** * adds a new macro to builtin macro list */ diff --git a/libraries/katex/mathtex-script-type.js b/libraries/katex/mathtex-script-type.js new file mode 100644 index 000000000..d82c41d88 --- /dev/null +++ b/libraries/katex/mathtex-script-type.js @@ -0,0 +1,112 @@ +(function webpackUniversalModuleDefinition(root, factory) { + if(typeof exports === 'object' && typeof module === 'object') + module.exports = factory(require("katex")); + else if(typeof define === 'function' && define.amd) + define(["katex"], factory); + else { + var a = typeof exports === 'object' ? 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Please report."]}}}}(),a=a.default}()})); \ No newline at end of file diff --git a/libraries/katex/mhchem.mjs b/libraries/katex/mhchem.mjs index 7d60076f4..7d9382525 100644 --- a/libraries/katex/mhchem.mjs +++ b/libraries/katex/mhchem.mjs @@ -2,7 +2,7 @@ import katex from '../katex.mjs'; /* eslint-disable */ -/* -*- Mode: Javascript; indent-tabs-mode:nil; js-indent-level: 2 -*- */ +/* -*- Mode: JavaScript; indent-tabs-mode:nil; js-indent-level: 2 -*- */ /* vim: set ts=2 et sw=2 tw=80: */ diff --git a/libraries/katex/render-a11y-string.js b/libraries/katex/render-a11y-string.js new file mode 100644 index 000000000..7db8452f4 --- /dev/null +++ b/libraries/katex/render-a11y-string.js @@ -0,0 +1,881 @@ +(function webpackUniversalModuleDefinition(root, factory) { + if(typeof exports === 'object' && typeof module === 'object') + module.exports = factory(require("katex")); + else if(typeof define === 'function' && define.amd) + define(["katex"], factory); + else { + var a = typeof exports === 'object' ? factory(require("katex")) : factory(root["katex"]); + for(var i in a) (typeof exports === 'object' ? exports : root)[i] = a[i]; + } +})((typeof self !== 'undefined' ? self : this), function(__WEBPACK_EXTERNAL_MODULE__771__) { +return /******/ (function() { // webpackBootstrap +/******/ "use strict"; +/******/ var __webpack_modules__ = ({ + +/***/ 771: +/***/ (function(module) { + +module.exports = __WEBPACK_EXTERNAL_MODULE__771__; + +/***/ }) + +/******/ }); +/************************************************************************/ +/******/ // The module cache +/******/ var __webpack_module_cache__ = {}; +/******/ +/******/ // The require function +/******/ function __webpack_require__(moduleId) { +/******/ // Check if module is in cache +/******/ var cachedModule = __webpack_module_cache__[moduleId]; +/******/ if (cachedModule !== undefined) { +/******/ return cachedModule.exports; +/******/ } +/******/ // Create a new module (and put it into the cache) +/******/ var module = __webpack_module_cache__[moduleId] = { +/******/ // no module.id needed +/******/ // no module.loaded needed +/******/ exports: {} +/******/ }; +/******/ +/******/ // Execute the module function +/******/ __webpack_modules__[moduleId](module, module.exports, __webpack_require__); +/******/ +/******/ // Return the exports of the module +/******/ return module.exports; +/******/ } +/******/ +/************************************************************************/ +/******/ /* webpack/runtime/compat get default export */ +/******/ !function() { +/******/ // getDefaultExport function for compatibility with non-harmony modules +/******/ __webpack_require__.n = function(module) { +/******/ var getter = module && module.__esModule ? +/******/ function() { return module['default']; } : +/******/ function() { return module; }; +/******/ __webpack_require__.d(getter, { a: getter }); +/******/ return getter; +/******/ }; +/******/ }(); +/******/ +/******/ /* webpack/runtime/define property getters */ +/******/ !function() { +/******/ // define getter functions for harmony exports +/******/ __webpack_require__.d = function(exports, definition) { +/******/ for(var key in definition) { +/******/ if(__webpack_require__.o(definition, key) && !__webpack_require__.o(exports, key)) { +/******/ Object.defineProperty(exports, key, { enumerable: true, get: definition[key] }); +/******/ } +/******/ } +/******/ }; +/******/ }(); +/******/ +/******/ /* webpack/runtime/hasOwnProperty shorthand */ +/******/ !function() { +/******/ __webpack_require__.o = function(obj, prop) { return Object.prototype.hasOwnProperty.call(obj, prop); } +/******/ }(); +/******/ +/************************************************************************/ +var __webpack_exports__ = {}; +// This entry need to be wrapped in an IIFE because it need to be isolated against other modules in the chunk. +!function() { +/* harmony import */ var katex__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(771); +/* harmony import */ var katex__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(katex__WEBPACK_IMPORTED_MODULE_0__); +/** + * renderA11yString returns a readable string. + * + * In some cases the string will have the proper semantic math + * meaning,: + * renderA11yString("\\frac{1}{2}"") + * -> "start fraction, 1, divided by, 2, end fraction" + * + * However, other cases do not: + * renderA11yString("f(x) = x^2") + * -> "f, left parenthesis, x, right parenthesis, equals, x, squared" + * + * The commas in the string aim to increase ease of understanding + * when read by a screenreader. + */ +// NOTE: since we're importing types here these files won't actually be +// included in the build. +// $FlowIgnore: we import the types directly anyways + +var stringMap = { + "(": "left parenthesis", + ")": "right parenthesis", + "[": "open bracket", + "]": "close bracket", + "\\{": "left brace", + "\\}": "right brace", + "\\lvert": "open vertical bar", + "\\rvert": "close vertical bar", + "|": "vertical bar", + "\\uparrow": "up arrow", + "\\Uparrow": "up arrow", + "\\downarrow": "down arrow", + "\\Downarrow": "down arrow", + "\\updownarrow": "up down arrow", + "\\leftarrow": "left arrow", + "\\Leftarrow": "left arrow", + "\\rightarrow": "right arrow", + "\\Rightarrow": "right arrow", + "\\langle": "open angle", + "\\rangle": "close angle", + "\\lfloor": "open floor", + "\\rfloor": "close floor", + "\\int": "integral", + "\\intop": "integral", + "\\lim": "limit", + "\\ln": "natural log", + "\\log": "log", + "\\sin": "sine", + "\\cos": "cosine", + "\\tan": "tangent", + "\\cot": "cotangent", + "\\sum": "sum", + "/": "slash", + ",": "comma", + ".": "point", + "-": "negative", + "+": "plus", + "~": "tilde", + ":": "colon", + "?": "question mark", + "'": "apostrophe", + "\\%": "percent", + " ": "space", + "\\ ": "space", + "\\$": "dollar sign", + "\\angle": "angle", + "\\degree": "degree", + "\\circ": "circle", + "\\vec": "vector", + "\\triangle": "triangle", + "\\pi": "pi", + "\\prime": "prime", + "\\infty": "infinity", + "\\alpha": "alpha", + "\\beta": "beta", + "\\gamma": "gamma", + "\\omega": "omega", + "\\theta": "theta", + "\\sigma": "sigma", + "\\lambda": "lambda", + "\\tau": "tau", + "\\Delta": "delta", + "\\delta": "delta", + "\\mu": "mu", + "\\rho": "rho", + "\\nabla": "del", + "\\ell": "ell", + "\\ldots": "dots", + // TODO: add entries for all accents + "\\hat": "hat", + "\\acute": "acute" +}; +var powerMap = { + "prime": "prime", + "degree": "degrees", + "circle": "degrees", + "2": "squared", + "3": "cubed" +}; +var openMap = { + "|": "open vertical bar", + ".": "" +}; +var closeMap = { + "|": "close vertical bar", + ".": "" +}; +var binMap = { + "+": "plus", + "-": "minus", + "\\pm": "plus minus", + "\\cdot": "dot", + "*": "times", + "/": "divided by", + "\\times": "times", + "\\div": "divided by", + "\\circ": "circle", + "\\bullet": "bullet" +}; +var relMap = { + "=": "equals", + "\\approx": "approximately equals", + "≠": "does not equal", + "\\geq": "is greater than or equal to", + "\\ge": "is greater than or equal to", + "\\leq": "is less than or equal to", + "\\le": "is less than or equal to", + ">": "is greater than", + "<": "is less than", + "\\leftarrow": "left arrow", + "\\Leftarrow": "left arrow", + "\\rightarrow": "right arrow", + "\\Rightarrow": "right arrow", + ":": "colon" +}; +var accentUnderMap = { + "\\underleftarrow": "left arrow", + "\\underrightarrow": "right arrow", + "\\underleftrightarrow": "left-right arrow", + "\\undergroup": "group", + "\\underlinesegment": "line segment", + "\\utilde": "tilde" +}; + +var buildString = function buildString(str, type, a11yStrings) { + if (!str) { + return; + } + + var ret; + + if (type === "open") { + ret = str in openMap ? openMap[str] : stringMap[str] || str; + } else if (type === "close") { + ret = str in closeMap ? closeMap[str] : stringMap[str] || str; + } else if (type === "bin") { + ret = binMap[str] || str; + } else if (type === "rel") { + ret = relMap[str] || str; + } else { + ret = stringMap[str] || str; + } // If the text to add is a number and there is already a string + // in the list and the last string is a number then we should + // combine them into a single number + + + if (/^\d+$/.test(ret) && a11yStrings.length > 0 && // TODO(kevinb): check that the last item in a11yStrings is a string + // I think we might be able to drop the nested arrays, which would make + // this easier to type + // $FlowFixMe + /^\d+$/.test(a11yStrings[a11yStrings.length - 1])) { + a11yStrings[a11yStrings.length - 1] += ret; + } else if (ret) { + a11yStrings.push(ret); + } +}; + +var buildRegion = function buildRegion(a11yStrings, callback) { + var regionStrings = []; + a11yStrings.push(regionStrings); + callback(regionStrings); +}; + +var handleObject = function handleObject(tree, a11yStrings, atomType) { + // Everything else is assumed to be an object... + switch (tree.type) { + case "accent": + { + buildRegion(a11yStrings, function (a11yStrings) { + buildA11yStrings(tree.base, a11yStrings, atomType); + a11yStrings.push("with"); + buildString(tree.label, "normal", a11yStrings); + a11yStrings.push("on top"); + }); + break; + } + + case "accentUnder": + { + buildRegion(a11yStrings, function (a11yStrings) { + buildA11yStrings(tree.base, a11yStrings, atomType); + a11yStrings.push("with"); + buildString(accentUnderMap[tree.label], "normal", a11yStrings); + a11yStrings.push("underneath"); + }); + break; + } + + case "accent-token": + { + // Used internally by accent symbols. + break; + } + + case "atom": + { + var text = tree.text; + + switch (tree.family) { + case "bin": + { + buildString(text, "bin", a11yStrings); + break; + } + + case "close": + { + buildString(text, "close", a11yStrings); + break; + } + // TODO(kevinb): figure out what should be done for inner + + case "inner": + { + buildString(tree.text, "inner", a11yStrings); + break; + } + + case "open": + { + buildString(text, "open", a11yStrings); + break; + } + + case "punct": + { + buildString(text, "punct", a11yStrings); + break; + } + + case "rel": + { + buildString(text, "rel", a11yStrings); + break; + } + + default: + { + tree.family; + throw new Error("\"" + tree.family + "\" is not a valid atom type"); + } + } + + break; + } + + case "color": + { + var color = tree.color.replace(/katex-/, ""); + buildRegion(a11yStrings, function (regionStrings) { + regionStrings.push("start color " + color); + buildA11yStrings(tree.body, regionStrings, atomType); + regionStrings.push("end color " + color); + }); + break; + } + + case "color-token": + { + // Used by \color, \colorbox, and \fcolorbox but not directly rendered. + // It's a leaf node and has no children so just break. + break; + } + + case "delimsizing": + { + if (tree.delim && tree.delim !== ".") { + buildString(tree.delim, "normal", a11yStrings); + } + + break; + } + + case "genfrac": + { + buildRegion(a11yStrings, function (regionStrings) { + // genfrac can have unbalanced delimiters + var leftDelim = tree.leftDelim, + rightDelim = tree.rightDelim; // NOTE: Not sure if this is a safe assumption + // hasBarLine true -> fraction, false -> binomial + + if (tree.hasBarLine) { + regionStrings.push("start fraction"); + leftDelim && buildString(leftDelim, "open", regionStrings); + buildA11yStrings(tree.numer, regionStrings, atomType); + regionStrings.push("divided by"); + buildA11yStrings(tree.denom, regionStrings, atomType); + rightDelim && buildString(rightDelim, "close", regionStrings); + regionStrings.push("end fraction"); + } else { + regionStrings.push("start binomial"); + leftDelim && buildString(leftDelim, "open", regionStrings); + buildA11yStrings(tree.numer, regionStrings, atomType); + regionStrings.push("over"); + buildA11yStrings(tree.denom, regionStrings, atomType); + rightDelim && buildString(rightDelim, "close", regionStrings); + regionStrings.push("end binomial"); + } + }); + break; + } + + case "hbox": + { + buildA11yStrings(tree.body, a11yStrings, atomType); + break; + } + + case "kern": + { + // No op: we don't attempt to present kerning information + // to the screen reader. + break; + } + + case "leftright": + { + buildRegion(a11yStrings, function (regionStrings) { + buildString(tree.left, "open", regionStrings); + buildA11yStrings(tree.body, regionStrings, atomType); + buildString(tree.right, "close", regionStrings); + }); + break; + } + + case "leftright-right": + { + // TODO: double check that this is a no-op + break; + } + + case "lap": + { + buildA11yStrings(tree.body, a11yStrings, atomType); + break; + } + + case "mathord": + { + buildString(tree.text, "normal", a11yStrings); + break; + } + + case "op": + { + var body = tree.body, + name = tree.name; + + if (body) { + buildA11yStrings(body, a11yStrings, atomType); + } else if (name) { + buildString(name, "normal", a11yStrings); + } + + break; + } + + case "op-token": + { + // Used internally by operator symbols. + buildString(tree.text, atomType, a11yStrings); + break; + } + + case "ordgroup": + { + buildA11yStrings(tree.body, a11yStrings, atomType); + break; + } + + case "overline": + { + buildRegion(a11yStrings, function (a11yStrings) { + a11yStrings.push("start overline"); + buildA11yStrings(tree.body, a11yStrings, atomType); + a11yStrings.push("end overline"); + }); + break; + } + + case "pmb": + { + a11yStrings.push("bold"); + break; + } + + case "phantom": + { + a11yStrings.push("empty space"); + break; + } + + case "raisebox": + { + buildA11yStrings(tree.body, a11yStrings, atomType); + break; + } + + case "rule": + { + a11yStrings.push("rectangle"); + break; + } + + case "sizing": + { + buildA11yStrings(tree.body, a11yStrings, atomType); + break; + } + + case "spacing": + { + a11yStrings.push("space"); + break; + } + + case "styling": + { + // We ignore the styling and just pass through the contents + buildA11yStrings(tree.body, a11yStrings, atomType); + break; + } + + case "sqrt": + { + buildRegion(a11yStrings, function (regionStrings) { + var body = tree.body, + index = tree.index; + + if (index) { + var indexString = flatten(buildA11yStrings(index, [], atomType)).join(","); + + if (indexString === "3") { + regionStrings.push("cube root of"); + buildA11yStrings(body, regionStrings, atomType); + regionStrings.push("end cube root"); + return; + } + + regionStrings.push("root"); + regionStrings.push("start index"); + buildA11yStrings(index, regionStrings, atomType); + regionStrings.push("end index"); + return; + } + + regionStrings.push("square root of"); + buildA11yStrings(body, regionStrings, atomType); + regionStrings.push("end square root"); + }); + break; + } + + case "supsub": + { + var base = tree.base, + sub = tree.sub, + sup = tree.sup; + var isLog = false; + + if (base) { + buildA11yStrings(base, a11yStrings, atomType); + isLog = base.type === "op" && base.name === "\\log"; + } + + if (sub) { + var regionName = isLog ? "base" : "subscript"; + buildRegion(a11yStrings, function (regionStrings) { + regionStrings.push("start " + regionName); + buildA11yStrings(sub, regionStrings, atomType); + regionStrings.push("end " + regionName); + }); + } + + if (sup) { + buildRegion(a11yStrings, function (regionStrings) { + var supString = flatten(buildA11yStrings(sup, [], atomType)).join(","); + + if (supString in powerMap) { + regionStrings.push(powerMap[supString]); + return; + } + + regionStrings.push("start superscript"); + buildA11yStrings(sup, regionStrings, atomType); + regionStrings.push("end superscript"); + }); + } + + break; + } + + case "text": + { + // TODO: handle other fonts + if (tree.font === "\\textbf") { + buildRegion(a11yStrings, function (regionStrings) { + regionStrings.push("start bold text"); + buildA11yStrings(tree.body, regionStrings, atomType); + regionStrings.push("end bold text"); + }); + break; + } + + buildRegion(a11yStrings, function (regionStrings) { + regionStrings.push("start text"); + buildA11yStrings(tree.body, regionStrings, atomType); + regionStrings.push("end text"); + }); + break; + } + + case "textord": + { + buildString(tree.text, atomType, a11yStrings); + break; + } + + case "smash": + { + buildA11yStrings(tree.body, a11yStrings, atomType); + break; + } + + case "enclose": + { + // TODO: create a map for these. + // TODO: differentiate between a body with a single atom, e.g. + // "cancel a" instead of "start cancel, a, end cancel" + if (/cancel/.test(tree.label)) { + buildRegion(a11yStrings, function (regionStrings) { + regionStrings.push("start cancel"); + buildA11yStrings(tree.body, regionStrings, atomType); + regionStrings.push("end cancel"); + }); + break; + } else if (/box/.test(tree.label)) { + buildRegion(a11yStrings, function (regionStrings) { + regionStrings.push("start box"); + buildA11yStrings(tree.body, regionStrings, atomType); + regionStrings.push("end box"); + }); + break; + } else if (/sout/.test(tree.label)) { + buildRegion(a11yStrings, function (regionStrings) { + regionStrings.push("start strikeout"); + buildA11yStrings(tree.body, regionStrings, atomType); + regionStrings.push("end strikeout"); + }); + break; + } else if (/phase/.test(tree.label)) { + buildRegion(a11yStrings, function (regionStrings) { + regionStrings.push("start phase angle"); + buildA11yStrings(tree.body, regionStrings, atomType); + regionStrings.push("end phase angle"); + }); + break; + } + + throw new Error("KaTeX-a11y: enclose node with " + tree.label + " not supported yet"); + } + + case "vcenter": + { + buildA11yStrings(tree.body, a11yStrings, atomType); + break; + } + + case "vphantom": + { + throw new Error("KaTeX-a11y: vphantom not implemented yet"); + } + + case "hphantom": + { + throw new Error("KaTeX-a11y: hphantom not implemented yet"); + } + + case "operatorname": + { + buildA11yStrings(tree.body, a11yStrings, atomType); + break; + } + + case "array": + { + throw new Error("KaTeX-a11y: array not implemented yet"); + } + + case "raw": + { + throw new Error("KaTeX-a11y: raw not implemented yet"); + } + + case "size": + { + // Although there are nodes of type "size" in the parse tree, they have + // no semantic meaning and should be ignored. + break; + } + + case "url": + { + throw new Error("KaTeX-a11y: url not implemented yet"); + } + + case "tag": + { + throw new Error("KaTeX-a11y: tag not implemented yet"); + } + + case "verb": + { + buildString("start verbatim", "normal", a11yStrings); + buildString(tree.body, "normal", a11yStrings); + buildString("end verbatim", "normal", a11yStrings); + break; + } + + case "environment": + { + throw new Error("KaTeX-a11y: environment not implemented yet"); + } + + case "horizBrace": + { + buildString("start " + tree.label.slice(1), "normal", a11yStrings); + buildA11yStrings(tree.base, a11yStrings, atomType); + buildString("end " + tree.label.slice(1), "normal", a11yStrings); + break; + } + + case "infix": + { + // All infix nodes are replace with other nodes. + break; + } + + case "includegraphics": + { + throw new Error("KaTeX-a11y: includegraphics not implemented yet"); + } + + case "font": + { + // TODO: callout the start/end of specific fonts + // TODO: map \BBb{N} to "the naturals" or something like that + buildA11yStrings(tree.body, a11yStrings, atomType); + break; + } + + case "href": + { + throw new Error("KaTeX-a11y: href not implemented yet"); + } + + case "cr": + { + // This is used by environments. + throw new Error("KaTeX-a11y: cr not implemented yet"); + } + + case "underline": + { + buildRegion(a11yStrings, function (a11yStrings) { + a11yStrings.push("start underline"); + buildA11yStrings(tree.body, a11yStrings, atomType); + a11yStrings.push("end underline"); + }); + break; + } + + case "xArrow": + { + throw new Error("KaTeX-a11y: xArrow not implemented yet"); + } + + case "cdlabel": + { + throw new Error("KaTeX-a11y: cdlabel not implemented yet"); + } + + case "cdlabelparent": + { + throw new Error("KaTeX-a11y: cdlabelparent not implemented yet"); + } + + case "mclass": + { + // \neq and \ne are macros so we let "htmlmathml" render the mathmal + // side of things and extract the text from that. + var _atomType = tree.mclass.slice(1); // $FlowFixMe: drop the leading "m" from the values in mclass + + + buildA11yStrings(tree.body, a11yStrings, _atomType); + break; + } + + case "mathchoice": + { + // TODO: track which style we're using, e.g. display, text, etc. + // default to text style if even that may not be the correct style + buildA11yStrings(tree.text, a11yStrings, atomType); + break; + } + + case "htmlmathml": + { + buildA11yStrings(tree.mathml, a11yStrings, atomType); + break; + } + + case "middle": + { + buildString(tree.delim, atomType, a11yStrings); + break; + } + + case "internal": + { + // internal nodes are never included in the parse tree + break; + } + + case "html": + { + buildA11yStrings(tree.body, a11yStrings, atomType); + break; + } + + default: + tree.type; + throw new Error("KaTeX a11y un-recognized type: " + tree.type); + } +}; + +var buildA11yStrings = function buildA11yStrings(tree, a11yStrings, atomType) { + if (a11yStrings === void 0) { + a11yStrings = []; + } + + if (tree instanceof Array) { + for (var i = 0; i < tree.length; i++) { + buildA11yStrings(tree[i], a11yStrings, atomType); + } + } else { + handleObject(tree, a11yStrings, atomType); + } + + return a11yStrings; +}; + +var flatten = function flatten(array) { + var result = []; + array.forEach(function (item) { + if (item instanceof Array) { + result = result.concat(flatten(item)); + } else { + result.push(item); + } + }); + return result; +}; + +var renderA11yString = function renderA11yString(text, settings) { + var tree = katex__WEBPACK_IMPORTED_MODULE_0___default().__parse(text, settings); + + var a11yStrings = buildA11yStrings(tree, [], "normal"); + return flatten(a11yStrings).join(", "); +}; + +/* harmony default export */ __webpack_exports__["default"] = (renderA11yString); +}(); +__webpack_exports__ = __webpack_exports__["default"]; +/******/ return __webpack_exports__; +/******/ })() +; +}); \ No newline at end of file diff --git a/libraries/katex/render-a11y-string.min.js b/libraries/katex/render-a11y-string.min.js new file mode 100644 index 000000000..3539b88b4 --- /dev/null +++ b/libraries/katex/render-a11y-string.min.js @@ -0,0 +1 @@ +!function(e,r){if("object"==typeof exports&&"object"==typeof module)module.exports=r(require("katex"));else if("function"==typeof define&&define.amd)define(["katex"],r);else{var a="object"==typeof exports?r(require("katex")):r(e.katex);for(var t in a)("object"==typeof exports?exports:e)[t]=a[t]}}("undefined"!=typeof self?self:this,(function(e){return function(){"use strict";var r={771:function(r){r.exports=e}},a={};function t(e){var o=a[e];if(void 0!==o)return o.exports;var n=a[e]={exports:{}};return r[e](n,n.exports,t),n.exports}t.n=function(e){var r=e&&e.__esModule?function(){return e.default}:function(){return e};return t.d(r,{a:r}),r},t.d=function(e,r){for(var a in r)t.o(r,a)&&!t.o(e,a)&&Object.defineProperty(e,a,{enumerable:!0,get:r[a]})},t.o=function(e,r){return Object.prototype.hasOwnProperty.call(e,r)};var o,n,s,i,l,c,u,p,d,h,b,m,f,w,g={};return o=t(771),n=t.n(o),s={"(":"left parenthesis",")":"right parenthesis","[":"open bracket","]":"close bracket","\\{":"left brace","\\}":"right brace","\\lvert":"open vertical bar","\\rvert":"close vertical bar","|":"vertical bar","\\uparrow":"up arrow","\\Uparrow":"up arrow","\\downarrow":"down arrow","\\Downarrow":"down arrow","\\updownarrow":"up down arrow","\\leftarrow":"left arrow","\\Leftarrow":"left arrow","\\rightarrow":"right arrow","\\Rightarrow":"right arrow","\\langle":"open angle","\\rangle":"close angle","\\lfloor":"open floor","\\rfloor":"close floor","\\int":"integral","\\intop":"integral","\\lim":"limit","\\ln":"natural 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a=[];e.push(a),r(a)},m=function(e,r,a){switch(e.type){case"accent":b(r,(function(r){f(e.base,r,a),r.push("with"),h(e.label,"normal",r),r.push("on top")}));break;case"accentUnder":b(r,(function(r){f(e.base,r,a),r.push("with"),h(d[e.label],"normal",r),r.push("underneath")}));break;case"accent-token":case"color-token":case"kern":case"leftright-right":case"size":case"infix":case"internal":break;case"atom":var t=e.text;switch(e.family){case"bin":h(t,"bin",r);break;case"close":h(t,"close",r);break;case"inner":h(e.text,"inner",r);break;case"open":h(t,"open",r);break;case"punct":h(t,"punct",r);break;case"rel":h(t,"rel",r);break;default:throw e.family,new Error('"'+e.family+'" is not a valid atom type')}break;case"color":var o=e.color.replace(/katex-/,"");b(r,(function(r){r.push("start color "+o),f(e.body,r,a),r.push("end color "+o)}));break;case"delimsizing":e.delim&&"."!==e.delim&&h(e.delim,"normal",r);break;case"genfrac":b(r,(function(r){var t=e.leftDelim,o=e.rightDelim;e.hasBarLine?(r.push("start fraction"),t&&h(t,"open",r),f(e.numer,r,a),r.push("divided by"),f(e.denom,r,a),o&&h(o,"close",r),r.push("end fraction")):(r.push("start binomial"),t&&h(t,"open",r),f(e.numer,r,a),r.push("over"),f(e.denom,r,a),o&&h(o,"close",r),r.push("end binomial"))}));break;case"hbox":case"lap":case"ordgroup":case"raisebox":case"sizing":case"styling":case"smash":case"vcenter":case"operatorname":case"font":case"html":f(e.body,r,a);break;case"leftright":b(r,(function(r){h(e.left,"open",r),f(e.body,r,a),h(e.right,"close",r)}));break;case"mathord":h(e.text,"normal",r);break;case"op":var n=e.body,s=e.name;n?f(n,r,a):s&&h(s,"normal",r);break;case"op-token":case"textord":h(e.text,a,r);break;case"overline":b(r,(function(r){r.push("start overline"),f(e.body,r,a),r.push("end overline")}));break;case"pmb":r.push("bold");break;case"phantom":r.push("empty space");break;case"rule":r.push("rectangle");break;case"spacing":r.push("space");break;case"sqrt":b(r,(function(r){var t=e.body,o=e.index;if(o)return"3"===w(f(o,[],a)).join(",")?(r.push("cube root of"),f(t,r,a),void r.push("end cube root")):(r.push("root"),r.push("start index"),f(o,r,a),void r.push("end index"));r.push("square root of"),f(t,r,a),r.push("end square root")}));break;case"supsub":var l=e.base,c=e.sub,u=e.sup,p=!1;if(l&&(f(l,r,a),p="op"===l.type&&"\\log"===l.name),c){var m=p?"base":"subscript";b(r,(function(e){e.push("start "+m),f(c,e,a),e.push("end "+m)}))}u&&b(r,(function(e){var r=w(f(u,[],a)).join(",");r in i?e.push(i[r]):(e.push("start superscript"),f(u,e,a),e.push("end superscript"))}));break;case"text":if("\\textbf"===e.font){b(r,(function(r){r.push("start bold text"),f(e.body,r,a),r.push("end bold text")}));break}b(r,(function(r){r.push("start text"),f(e.body,r,a),r.push("end text")}));break;case"enclose":if(/cancel/.test(e.label)){b(r,(function(r){r.push("start cancel"),f(e.body,r,a),r.push("end cancel")}));break}if(/box/.test(e.label)){b(r,(function(r){r.push("start box"),f(e.body,r,a),r.push("end box")}));break}if(/sout/.test(e.label)){b(r,(function(r){r.push("start strikeout"),f(e.body,r,a),r.push("end strikeout")}));break}if(/phase/.test(e.label)){b(r,(function(r){r.push("start phase angle"),f(e.body,r,a),r.push("end phase angle")}));break}throw new Error("KaTeX-a11y: enclose node with "+e.label+" not supported yet");case"vphantom":throw new Error("KaTeX-a11y: vphantom not implemented yet");case"hphantom":throw new Error("KaTeX-a11y: hphantom not implemented yet");case"array":throw new Error("KaTeX-a11y: array not implemented yet");case"raw":throw new Error("KaTeX-a11y: raw not implemented yet");case"url":throw new Error("KaTeX-a11y: url not implemented yet");case"tag":throw new Error("KaTeX-a11y: tag not implemented yet");case"verb":h("start verbatim","normal",r),h(e.body,"normal",r),h("end verbatim","normal",r);break;case"environment":throw new Error("KaTeX-a11y: environment not implemented yet");case"horizBrace":h("start "+e.label.slice(1),"normal",r),f(e.base,r,a),h("end "+e.label.slice(1),"normal",r);break;case"includegraphics":throw new Error("KaTeX-a11y: includegraphics not implemented yet");case"href":throw new Error("KaTeX-a11y: href not implemented yet");case"cr":throw new Error("KaTeX-a11y: cr not implemented yet");case"underline":b(r,(function(r){r.push("start underline"),f(e.body,r,a),r.push("end underline")}));break;case"xArrow":throw new Error("KaTeX-a11y: xArrow not implemented yet");case"cdlabel":throw new Error("KaTeX-a11y: cdlabel not implemented yet");case"cdlabelparent":throw new Error("KaTeX-a11y: cdlabelparent not implemented yet");case"mclass":var g=e.mclass.slice(1);f(e.body,r,g);break;case"mathchoice":f(e.text,r,a);break;case"htmlmathml":f(e.mathml,r,a);break;case"middle":h(e.delim,a,r);break;default:throw e.type,new Error("KaTeX a11y un-recognized type: "+e.type)}},f=function e(r,a,t){if(void 0===a&&(a=[]),r instanceof Array)for(var o=0;o "start fraction, 1, divided by, 2, end fraction" + * + * However, other cases do not: + * renderA11yString("f(x) = x^2") + * -> "f, left parenthesis, x, right parenthesis, equals, x, squared" + * + * The commas in the string aim to increase ease of understanding + * when read by a screenreader. + */ +var stringMap = { + "(": "left parenthesis", + ")": "right parenthesis", + "[": "open bracket", + "]": "close bracket", + "\\{": "left brace", + "\\}": "right brace", + "\\lvert": "open vertical bar", + "\\rvert": "close vertical bar", + "|": "vertical bar", + "\\uparrow": "up arrow", + "\\Uparrow": "up arrow", + "\\downarrow": "down arrow", + "\\Downarrow": "down arrow", + "\\updownarrow": "up down arrow", + "\\leftarrow": "left arrow", + "\\Leftarrow": "left arrow", + "\\rightarrow": "right arrow", + "\\Rightarrow": "right arrow", + "\\langle": "open angle", + "\\rangle": "close angle", + "\\lfloor": "open floor", + "\\rfloor": "close floor", + "\\int": "integral", + "\\intop": "integral", + "\\lim": "limit", + "\\ln": "natural log", + "\\log": "log", + "\\sin": "sine", + "\\cos": "cosine", + "\\tan": "tangent", + "\\cot": "cotangent", + "\\sum": "sum", + "/": "slash", + ",": "comma", + ".": "point", + "-": "negative", + "+": "plus", + "~": "tilde", + ":": "colon", + "?": "question mark", + "'": "apostrophe", + "\\%": "percent", + " ": "space", + "\\ ": "space", + "\\$": "dollar sign", + "\\angle": "angle", + "\\degree": "degree", + "\\circ": "circle", + "\\vec": "vector", + "\\triangle": "triangle", + "\\pi": "pi", + "\\prime": "prime", + "\\infty": "infinity", + "\\alpha": "alpha", + "\\beta": "beta", + "\\gamma": "gamma", + "\\omega": "omega", + "\\theta": "theta", + "\\sigma": "sigma", + "\\lambda": "lambda", + "\\tau": "tau", + "\\Delta": "delta", + "\\delta": "delta", + "\\mu": "mu", + "\\rho": "rho", + "\\nabla": "del", + "\\ell": "ell", + "\\ldots": "dots", + // TODO: add entries for all accents + "\\hat": "hat", + "\\acute": "acute" +}; +var powerMap = { + "prime": "prime", + "degree": "degrees", + "circle": "degrees", + "2": "squared", + "3": "cubed" +}; +var openMap = { + "|": "open vertical bar", + ".": "" +}; +var closeMap = { + "|": "close vertical bar", + ".": "" +}; +var binMap = { + "+": "plus", + "-": "minus", + "\\pm": "plus minus", + "\\cdot": "dot", + "*": "times", + "/": "divided by", + "\\times": "times", + "\\div": "divided by", + "\\circ": "circle", + "\\bullet": "bullet" +}; +var relMap = { + "=": "equals", + "\\approx": "approximately equals", + "≠": "does not equal", + "\\geq": "is greater than or equal to", + "\\ge": "is greater than or equal to", + "\\leq": "is less than or equal to", + "\\le": "is less than or equal to", + ">": "is greater than", + "<": "is less than", + "\\leftarrow": "left arrow", + "\\Leftarrow": "left arrow", + "\\rightarrow": "right arrow", + "\\Rightarrow": "right arrow", + ":": "colon" +}; +var accentUnderMap = { + "\\underleftarrow": "left arrow", + "\\underrightarrow": "right arrow", + "\\underleftrightarrow": "left-right arrow", + "\\undergroup": "group", + "\\underlinesegment": "line segment", + "\\utilde": "tilde" +}; + +var buildString = (str, type, a11yStrings) => { + if (!str) { + return; + } + + var ret; + + if (type === "open") { + ret = str in openMap ? openMap[str] : stringMap[str] || str; + } else if (type === "close") { + ret = str in closeMap ? closeMap[str] : stringMap[str] || str; + } else if (type === "bin") { + ret = binMap[str] || str; + } else if (type === "rel") { + ret = relMap[str] || str; + } else { + ret = stringMap[str] || str; + } // If the text to add is a number and there is already a string + // in the list and the last string is a number then we should + // combine them into a single number + + + if (/^\d+$/.test(ret) && a11yStrings.length > 0 && // TODO(kevinb): check that the last item in a11yStrings is a string + // I think we might be able to drop the nested arrays, which would make + // this easier to type + // $FlowFixMe + /^\d+$/.test(a11yStrings[a11yStrings.length - 1])) { + a11yStrings[a11yStrings.length - 1] += ret; + } else if (ret) { + a11yStrings.push(ret); + } +}; + +var buildRegion = (a11yStrings, callback) => { + var regionStrings = []; + a11yStrings.push(regionStrings); + callback(regionStrings); +}; + +var handleObject = (tree, a11yStrings, atomType) => { + // Everything else is assumed to be an object... + switch (tree.type) { + case "accent": + { + buildRegion(a11yStrings, a11yStrings => { + buildA11yStrings(tree.base, a11yStrings, atomType); + a11yStrings.push("with"); + buildString(tree.label, "normal", a11yStrings); + a11yStrings.push("on top"); + }); + break; + } + + case "accentUnder": + { + buildRegion(a11yStrings, a11yStrings => { + buildA11yStrings(tree.base, a11yStrings, atomType); + a11yStrings.push("with"); + buildString(accentUnderMap[tree.label], "normal", a11yStrings); + a11yStrings.push("underneath"); + }); + break; + } + + case "accent-token": + { + // Used internally by accent symbols. + break; + } + + case "atom": + { + var { + text + } = tree; + + switch (tree.family) { + case "bin": + { + buildString(text, "bin", a11yStrings); + break; + } + + case "close": + { + buildString(text, "close", a11yStrings); + break; + } + // TODO(kevinb): figure out what should be done for inner + + case "inner": + { + buildString(tree.text, "inner", a11yStrings); + break; + } + + case "open": + { + buildString(text, "open", a11yStrings); + break; + } + + case "punct": + { + buildString(text, "punct", a11yStrings); + break; + } + + case "rel": + { + buildString(text, "rel", a11yStrings); + break; + } + + default: + { + tree.family; + throw new Error("\"" + tree.family + "\" is not a valid atom type"); + } + } + + break; + } + + case "color": + { + var color = tree.color.replace(/katex-/, ""); + buildRegion(a11yStrings, regionStrings => { + regionStrings.push("start color " + color); + buildA11yStrings(tree.body, regionStrings, atomType); + regionStrings.push("end color " + color); + }); + break; + } + + case "color-token": + { + // Used by \color, \colorbox, and \fcolorbox but not directly rendered. + // It's a leaf node and has no children so just break. + break; + } + + case "delimsizing": + { + if (tree.delim && tree.delim !== ".") { + buildString(tree.delim, "normal", a11yStrings); + } + + break; + } + + case "genfrac": + { + buildRegion(a11yStrings, regionStrings => { + // genfrac can have unbalanced delimiters + var { + leftDelim, + rightDelim + } = tree; // NOTE: Not sure if this is a safe assumption + // hasBarLine true -> fraction, false -> binomial + + if (tree.hasBarLine) { + regionStrings.push("start fraction"); + leftDelim && buildString(leftDelim, "open", regionStrings); + buildA11yStrings(tree.numer, regionStrings, atomType); + regionStrings.push("divided by"); + buildA11yStrings(tree.denom, regionStrings, atomType); + rightDelim && buildString(rightDelim, "close", regionStrings); + regionStrings.push("end fraction"); + } else { + regionStrings.push("start binomial"); + leftDelim && buildString(leftDelim, "open", regionStrings); + buildA11yStrings(tree.numer, regionStrings, atomType); + regionStrings.push("over"); + buildA11yStrings(tree.denom, regionStrings, atomType); + rightDelim && buildString(rightDelim, "close", regionStrings); + regionStrings.push("end binomial"); + } + }); + break; + } + + case "hbox": + { + buildA11yStrings(tree.body, a11yStrings, atomType); + break; + } + + case "kern": + { + // No op: we don't attempt to present kerning information + // to the screen reader. + break; + } + + case "leftright": + { + buildRegion(a11yStrings, regionStrings => { + buildString(tree.left, "open", regionStrings); + buildA11yStrings(tree.body, regionStrings, atomType); + buildString(tree.right, "close", regionStrings); + }); + break; + } + + case "leftright-right": + { + // TODO: double check that this is a no-op + break; + } + + case "lap": + { + buildA11yStrings(tree.body, a11yStrings, atomType); + break; + } + + case "mathord": + { + buildString(tree.text, "normal", a11yStrings); + break; + } + + case "op": + { + var { + body, + name + } = tree; + + if (body) { + buildA11yStrings(body, a11yStrings, atomType); + } else if (name) { + buildString(name, "normal", a11yStrings); + } + + break; + } + + case "op-token": + { + // Used internally by operator symbols. + buildString(tree.text, atomType, a11yStrings); + break; + } + + case "ordgroup": + { + buildA11yStrings(tree.body, a11yStrings, atomType); + break; + } + + case "overline": + { + buildRegion(a11yStrings, function (a11yStrings) { + a11yStrings.push("start overline"); + buildA11yStrings(tree.body, a11yStrings, atomType); + a11yStrings.push("end overline"); + }); + break; + } + + case "pmb": + { + a11yStrings.push("bold"); + break; + } + + case "phantom": + { + a11yStrings.push("empty space"); + break; + } + + case "raisebox": + { + buildA11yStrings(tree.body, a11yStrings, atomType); + break; + } + + case "rule": + { + a11yStrings.push("rectangle"); + break; + } + + case "sizing": + { + buildA11yStrings(tree.body, a11yStrings, atomType); + break; + } + + case "spacing": + { + a11yStrings.push("space"); + break; + } + + case "styling": + { + // We ignore the styling and just pass through the contents + buildA11yStrings(tree.body, a11yStrings, atomType); + break; + } + + case "sqrt": + { + buildRegion(a11yStrings, regionStrings => { + var { + body, + index + } = tree; + + if (index) { + var indexString = flatten(buildA11yStrings(index, [], atomType)).join(","); + + if (indexString === "3") { + regionStrings.push("cube root of"); + buildA11yStrings(body, regionStrings, atomType); + regionStrings.push("end cube root"); + return; + } + + regionStrings.push("root"); + regionStrings.push("start index"); + buildA11yStrings(index, regionStrings, atomType); + regionStrings.push("end index"); + return; + } + + regionStrings.push("square root of"); + buildA11yStrings(body, regionStrings, atomType); + regionStrings.push("end square root"); + }); + break; + } + + case "supsub": + { + var { + base, + sub, + sup + } = tree; + var isLog = false; + + if (base) { + buildA11yStrings(base, a11yStrings, atomType); + isLog = base.type === "op" && base.name === "\\log"; + } + + if (sub) { + var regionName = isLog ? "base" : "subscript"; + buildRegion(a11yStrings, function (regionStrings) { + regionStrings.push("start " + regionName); + buildA11yStrings(sub, regionStrings, atomType); + regionStrings.push("end " + regionName); + }); + } + + if (sup) { + buildRegion(a11yStrings, function (regionStrings) { + var supString = flatten(buildA11yStrings(sup, [], atomType)).join(","); + + if (supString in powerMap) { + regionStrings.push(powerMap[supString]); + return; + } + + regionStrings.push("start superscript"); + buildA11yStrings(sup, regionStrings, atomType); + regionStrings.push("end superscript"); + }); + } + + break; + } + + case "text": + { + // TODO: handle other fonts + if (tree.font === "\\textbf") { + buildRegion(a11yStrings, function (regionStrings) { + regionStrings.push("start bold text"); + buildA11yStrings(tree.body, regionStrings, atomType); + regionStrings.push("end bold text"); + }); + break; + } + + buildRegion(a11yStrings, function (regionStrings) { + regionStrings.push("start text"); + buildA11yStrings(tree.body, regionStrings, atomType); + regionStrings.push("end text"); + }); + break; + } + + case "textord": + { + buildString(tree.text, atomType, a11yStrings); + break; + } + + case "smash": + { + buildA11yStrings(tree.body, a11yStrings, atomType); + break; + } + + case "enclose": + { + // TODO: create a map for these. + // TODO: differentiate between a body with a single atom, e.g. + // "cancel a" instead of "start cancel, a, end cancel" + if (/cancel/.test(tree.label)) { + buildRegion(a11yStrings, function (regionStrings) { + regionStrings.push("start cancel"); + buildA11yStrings(tree.body, regionStrings, atomType); + regionStrings.push("end cancel"); + }); + break; + } else if (/box/.test(tree.label)) { + buildRegion(a11yStrings, function (regionStrings) { + regionStrings.push("start box"); + buildA11yStrings(tree.body, regionStrings, atomType); + regionStrings.push("end box"); + }); + break; + } else if (/sout/.test(tree.label)) { + buildRegion(a11yStrings, function (regionStrings) { + regionStrings.push("start strikeout"); + buildA11yStrings(tree.body, regionStrings, atomType); + regionStrings.push("end strikeout"); + }); + break; + } else if (/phase/.test(tree.label)) { + buildRegion(a11yStrings, function (regionStrings) { + regionStrings.push("start phase angle"); + buildA11yStrings(tree.body, regionStrings, atomType); + regionStrings.push("end phase angle"); + }); + break; + } + + throw new Error("KaTeX-a11y: enclose node with " + tree.label + " not supported yet"); + } + + case "vcenter": + { + buildA11yStrings(tree.body, a11yStrings, atomType); + break; + } + + case "vphantom": + { + throw new Error("KaTeX-a11y: vphantom not implemented yet"); + } + + case "hphantom": + { + throw new Error("KaTeX-a11y: hphantom not implemented yet"); + } + + case "operatorname": + { + buildA11yStrings(tree.body, a11yStrings, atomType); + break; + } + + case "array": + { + throw new Error("KaTeX-a11y: array not implemented yet"); + } + + case "raw": + { + throw new Error("KaTeX-a11y: raw not implemented yet"); + } + + case "size": + { + // Although there are nodes of type "size" in the parse tree, they have + // no semantic meaning and should be ignored. + break; + } + + case "url": + { + throw new Error("KaTeX-a11y: url not implemented yet"); + } + + case "tag": + { + throw new Error("KaTeX-a11y: tag not implemented yet"); + } + + case "verb": + { + buildString("start verbatim", "normal", a11yStrings); + buildString(tree.body, "normal", a11yStrings); + buildString("end verbatim", "normal", a11yStrings); + break; + } + + case "environment": + { + throw new Error("KaTeX-a11y: environment not implemented yet"); + } + + case "horizBrace": + { + buildString("start " + tree.label.slice(1), "normal", a11yStrings); + buildA11yStrings(tree.base, a11yStrings, atomType); + buildString("end " + tree.label.slice(1), "normal", a11yStrings); + break; + } + + case "infix": + { + // All infix nodes are replace with other nodes. + break; + } + + case "includegraphics": + { + throw new Error("KaTeX-a11y: includegraphics not implemented yet"); + } + + case "font": + { + // TODO: callout the start/end of specific fonts + // TODO: map \BBb{N} to "the naturals" or something like that + buildA11yStrings(tree.body, a11yStrings, atomType); + break; + } + + case "href": + { + throw new Error("KaTeX-a11y: href not implemented yet"); + } + + case "cr": + { + // This is used by environments. + throw new Error("KaTeX-a11y: cr not implemented yet"); + } + + case "underline": + { + buildRegion(a11yStrings, function (a11yStrings) { + a11yStrings.push("start underline"); + buildA11yStrings(tree.body, a11yStrings, atomType); + a11yStrings.push("end underline"); + }); + break; + } + + case "xArrow": + { + throw new Error("KaTeX-a11y: xArrow not implemented yet"); + } + + case "cdlabel": + { + throw new Error("KaTeX-a11y: cdlabel not implemented yet"); + } + + case "cdlabelparent": + { + throw new Error("KaTeX-a11y: cdlabelparent not implemented yet"); + } + + case "mclass": + { + // \neq and \ne are macros so we let "htmlmathml" render the mathmal + // side of things and extract the text from that. + var _atomType = tree.mclass.slice(1); // $FlowFixMe: drop the leading "m" from the values in mclass + + + buildA11yStrings(tree.body, a11yStrings, _atomType); + break; + } + + case "mathchoice": + { + // TODO: track which style we're using, e.g. display, text, etc. + // default to text style if even that may not be the correct style + buildA11yStrings(tree.text, a11yStrings, atomType); + break; + } + + case "htmlmathml": + { + buildA11yStrings(tree.mathml, a11yStrings, atomType); + break; + } + + case "middle": + { + buildString(tree.delim, atomType, a11yStrings); + break; + } + + case "internal": + { + // internal nodes are never included in the parse tree + break; + } + + case "html": + { + buildA11yStrings(tree.body, a11yStrings, atomType); + break; + } + + default: + tree.type; + throw new Error("KaTeX a11y un-recognized type: " + tree.type); + } +}; + +var buildA11yStrings = function buildA11yStrings(tree, a11yStrings, atomType) { + if (a11yStrings === void 0) { + a11yStrings = []; + } + + if (tree instanceof Array) { + for (var i = 0; i < tree.length; i++) { + buildA11yStrings(tree[i], a11yStrings, atomType); + } + } else { + handleObject(tree, a11yStrings, atomType); + } + + return a11yStrings; +}; + +var flatten = function flatten(array) { + var result = []; + array.forEach(function (item) { + if (item instanceof Array) { + result = result.concat(flatten(item)); + } else { + result.push(item); + } + }); + return result; +}; + +var renderA11yString = function renderA11yString(text, settings) { + var tree = katex.__parse(text, settings); + + var a11yStrings = buildA11yStrings(tree, [], "normal"); + return flatten(a11yStrings).join(", "); +}; + +export { renderA11yString as default };