mathlive - npm Package Compare versions

Comparing version 0.28.0 to 0.29.0

CHANGELOG.md

@@ -0,1 +1,47 @@
+## 0.29 (May 9, 2019)
+
+### Major New Features
+- Scrollable mathfield. The mathfield now behaves like a text area: the content
+that does not fit withing the bounds of the mathfield will not overflow
+but will be scrollable. The scrolling can be done using the mouse wheel or 
+trackpad gestures, or by dragging while selecting. The AP
+
+### Improvements
+- When smartFence is on, and a new smart fence is inserted (by typing 
+`(` for example), the closing 'phantom' fence would be displayed immediately
+after the opening fence. The closing fence will now be inserted after
+the end of the expression.
+- The heuristics for determining implicit arguments, for example the implicit
+numerator when typing `/` have been improved. For example, typing `/` after
+`3 + 2sin x` will result in `3 + (2sin x)/(...)` instead of `3 + sin (x)/(...)`.
+- When `config.removeExtraneousParentheses` is true (default), if a frac is 
+inserted inside parentheses, the parens will be removed. So, if a `/` is typed 
+after `1` in `(1)` it will become `1/(...)`.
+- When smartMode is on, textual operators are eligible for conversion to text.
+Previously, if an inline shortcuts for `rad` was defined to `\operatorname{rad}`
+and 'radius' was typed, only `ius` would be turned to text.
+- Smartmode is now applied when there is a selection. That is, if some text is 
+selected and the `/` is pressed the selection will become the numerator. Previously
+the selection was deleted and replaced with an empty fraction
+- Improved layout of surds, particularly when the surd is empty
+- Made `\mathbb{}` et al. apply to the argument only, and not affect the style
+of following characters. Previously, if a `\mathbb{R}` was inserted, the following
+typed character would also be in Blackboard style.
+- Improved build system on Windows. That is, it now works.
+- Merge speak and readAloud APIs into one (contribution from Neil. Thanks Neil!)
+- Switched to using `npm ci` for CI builds. Even for local builds,
+it is recommended to use `npm ci` to ensure the correct version of the dependencies
+are installed.
+- In smartMode, the currency symbols are handled better. "One apple is $3.14" 
+will result in the "$" being in math mode.
+- Switching to/from command mode will not suppress smart mode.
+
+### Bug fixes
+- Fixed a crash when using smartFence with `sin(x^2/`
+- Fixed `alt+=` keyboard shortcut on Windows.
+- Fixed some layout issues with `box` and `enclose`
+- Smart Fences will now work when invoked from the virtual keyboard.
+- Fixed #177: custom localization strings are now handled correctly.
+- Fixed some issues toggling style when selection is empty.
+
 ## 0.28 (Apr 22, 2019)
@@ -2,0 +48,0 @@ This release contains some small bug fixes and improvements.

dist/src/addons/outputLatex.js

@@ -16,3 +16,4 @@ /**
     while (atoms[i]) {
-        if (atoms[i].type !== 'mop' && atoms[i][property] !== value) break
+        if (atoms[i].type !== 'mop' && 
+            atoms[i][property] !== value) break
         i++;
@@ -128,2 +129,5 @@ }
                 suffix = '}';
+            } else if (atoms[0].fontSeries && atoms[0].fontSeries !== 'n') {
+                prefix = '{\\fontSeries{' + atoms[0].fontSeries + '}';
+                suffix = '}';
             }
@@ -138,2 +142,5 @@ } else if (prop === 'fontShape') {
                 suffix = '}';
+            } else if (atoms[0].fontShape && atoms[0].fontShape !== 'n') {
+                prefix = '{\\fontShape{' + atoms[0].fontShape + '}';
+                suffix = '}';
             }
@@ -186,2 +193,9 @@
 
+    if (prop === 'backgroundColor' && atoms[0].backgroundColor &&
+         atoms[0].backgroundColor !== 'none' &&
+         (!parent || parent.backgroundColor !== atoms[0].backgroundColor)) {
+        prefix = '\\colorbox{' + Color.colorToString(atoms[0].backgroundColor) + '}{';
+        suffix = '}';
+    }
+
     result += prefix;
@@ -228,5 +242,5 @@
             ], value, expandMacro);
-        if (result.startsWith('{') && result.endsWith('}')) {
-            result = result.slice(1, result.length - 1);
-        }
+        // if (result.startsWith('{') && result.endsWith('}')) {
+        //     result = result.slice(1, result.length - 1);
+        // }
 
@@ -266,9 +280,14 @@ } else if (typeof value === 'number' || typeof value === 'boolean') {
             if (this.cssId) result += '\\cssId{' + this.cssId + '}{';
-            if (this.cssClass) result += '\\class{' + this.cssClass + '}{';
 
-            result += expandMacro ? latexify(this, this.body, true) :
-                (this.latex || latexify(this, this.body, false));
+            if (this.cssClass === 'ML__emph') {
+                result += '\\emph{' + latexify(this, this.body, expandMacro) + '}';
+            } else {
+                if (this.cssClass) result += '\\class{' + this.cssClass + '}{';
 
+                result += expandMacro ? latexify(this, this.body, true) :
+                    (this.latex || latexify(this, this.body, false));
+
+                if (this.cssClass) result += '}';
+            }
             if (this.cssId) result += '}';
-            if (this.cssClass) result += '}';
 
@@ -343,6 +362,6 @@ result += this.latexClose || ((this.cssId || this.cssClass) ? '' : '}');
             } else {
-                result += this.leftDelim === '.' ? '' : (this.leftDelim || '');
+                result += '\\mleft' + (this.leftDelim || '.');
                 if (this.leftDelim && this.leftDelim.length > 1) result += ' ';
                 result += latexify(this, this.body, expandMacro);
-                result += (!this.rightDelim || this.rightDelim === '?' || this.rightDelim === '.') ? '' : this.rightDelim;
+                result += '\\mright' + (this.rightDelim || '.');
                 if (this.rightDelim && this.rightDelim.length > 1) result += ' ';
@@ -444,3 +463,3 @@ }
                     if (isFinite(this.padding)) {
-                        bboxParams.push(Math.floor(1e5 * this.padding) / 1e5 + 'em')
+                        bboxParams.push(Math.floor(1e2 * this.padding) / 1e2 + 'em')
                     }
@@ -447,0 +466,0 @@ if (this.border) {

dist/src/core/fontMetrics.js

@@ -326,5 +326,10 @@ /* eslint no-unused-vars:0 */
 
+function convertDimenToPx(value, unit) {
+    return convertDimenToEm(value, unit) * (4.0 / 3.0) * METRICS.ptPerEm;
+}
 
+
 export default {
     toEm : convertDimenToEm,
+    toPx: convertDimenToPx,
     METRICS,
@@ -331,0 +336,0 @@ SIGMAS,

dist/src/core/lexer.js

@@ -222,6 +222,2 @@ /**
             // }
-        } else if (this.peek() === '^') {
-            result = new Token(this.get());
-        } else if (this.peek() === '_') {
-            result = new Token(this.get());
         } else if (this.peek() === '~') {
@@ -228,0 +224,0 @@ // Spacing

dist/src/core/parser.js

@@ -684,2 +684,4 @@
         this.parseToken('}');
+        result.latexOpen = '{';
+        result.latexClose = '}';
         return result;
@@ -798,10 +800,10 @@ }
         let result = false;
-        while (this.hasToken('^') || this.hasToken('_') || this.hasLiteral("'")) {
+        while (this.hasLiteral('^') || this.hasLiteral('_') || this.hasLiteral("'")) {
             let supsub;
-            if (this.hasToken('^')) {
+            if (this.hasLiteral('^')) {
                 supsub = 'superscript';
-            } else if (this.hasToken('_')) {
+            } else if (this.hasLiteral('_')) {
                 supsub = 'subscript';
             }
-            if (this.parseToken('^') || this.parseToken('_')) {
+            if (this.parseLiteral('^') || this.parseLiteral('_')) {
                 const arg = this.scanArg();
@@ -808,0 +810,0 @@ if (arg) {

dist/src/core/span.js

@@ -21,3 +21,3 @@ /**
     if (typeof arg === 'number') {
-        result += Math.floor(1e5 * arg) / 1e5;
+        result += Math.floor(1e2 * arg) / 1e2;
     } else if (typeof arg === 'string') {
@@ -218,3 +218,3 @@ result += arg;
             this.classes += ' ' + FONT_CLASS[fontFamily];
-        } else {
+        } else if (fontFamily) {
             // Not a well-known family. Use a style.
@@ -374,8 +374,11 @@ this.setStyle('font-family', fontFamily);
         }
-        const tag = this.tag || 'span';
+        // Collapse 'empty' spans
+        if ((body === '\u200b' || !body) && 
+            (!this.classes || this.classes === 'ML__selected')) {
+            result = '';
 
-        if (tag.length === 0) {
-            result = body || '';
         } else {
-            result = '<' + tag;
+            // Note: We can't omit the tag, even if it has no class and no style,
+            // as some layouts (vlist) depends on the presence of the tag to function
+            result = '<span';
 
@@ -387,4 +390,5 @@ if (this.cssId) {
             if (this.svgOverlay) {
-                if (!this.style) this.style = {};
-                this.style['position'] = 'relative';
+                this.setStyle('position', 'relative');
+                this.setStyle('height', this.height + this.depth, 'em');
+                this.setStyle('vertical-align', -this.depth, 'em');
             }
@@ -472,5 +476,25 @@
             if (this.svgOverlay) {
-                result += body; // @todo maybe safe encode here...? (< >)
-                result += '<svg ';
-                result += 'style="position:absolute;left:0;top:0;width:100%;height:100%;z-index:2;';
+                result += '<span style="';
+                result += 'display: inline-block;';
+                result += 'height:' + (this.height + this.depth) + 'em;';
+                result += 'vertical-align:' + this.depth + 'em;';
+                result += '">';
+                result += body;
+                result += '</span>';
+                result += '<svg ';                
+                // result += 'style="position:absolute;left:0;top:0;width:100%;height:100%;z-index:2;';
+                result += 'style="position:absolute;';
+                result += 'overflow:overlay;';
+                result += 'height:' + (this.height + this.depth) + 'em;';
+                result += 'transform:translateY(' + Math.round(- FontMetrics.toPx(this.depth, 'em') + 2 * FontMetrics.toPx(this.style.padding)) + 'px);';
+                if (this.style && this.style.padding) {
+                    result += 'top:' + this.style.padding + ';';
+                    result += 'left:' + this.style.padding + ';';
+                    result += 'width:calc(100% - 2 * ' + this.style.padding + ' );';
+                } else {
+                    result += 'top:0;';
+                    result += 'left:0;';
+                    result += 'width:100%;';
+                }
+                result += 'z-index:2;';
                 result += '"';
@@ -484,14 +508,8 @@ if (this.svgStyle) {
             } else {
-                result += body; // @todo maybe safe encode here...? (< >)
+                result += body;
             }
 
-            // Note: We can't omit the tag, even if it has no class and no style,
-            // as some layouts (vlist) depends on the presence of the tag to function
-            result = result + '</' + tag + '>';
+            result = result + '</span>';
         }
 
-        // Collapse 'empty' spans
-        if (result === '<span>\u200b</span>') {
-            result = '';
-        }
 
@@ -498,0 +516,0 @@ if (this.caret && this.type !== 'command') {

dist/src/editor/editor-keyboard.js

@@ -25,4 +25,5 @@
 const KEY_NAMES = {
+    'Space':        'Spacebar',
+    ' ':            'Spacebar',
     'Escape':       'Esc',
-    ' ':            'Spacebar',
     'ArrowLeft':    'Left',
@@ -122,2 +123,6 @@ 'ArrowUp':      'Up',
 
+    if (!keyname && evt.code) {
+        keyname = KEY_NAMES[evt.code] || evt.code;
+    }
+
     if (!keyname) {
@@ -128,3 +133,3 @@ if (INTL_KEY[evt.key]) {
         } else {
-            keyname = KEY_NAMES[evt.key] || evt.code;
+            keyname = KEY_NAMES[evt.key];
         }
@@ -131,0 +136,0 @@

dist/src/editor/editor-shortcuts.js

@@ -231,13 +231,27 @@ /**
 */
-    'mac:Ctrl-Meta-Up':         'speakParent',
-    '!mac:Ctrl-Alt-Up':         'speakParent',
-    'mac:Ctrl-Meta-Down':       'speakGroup',
-    '!mac:Ctrl-Alt-Down':       'speakGroup',
-    'mac:Ctrl-Meta-Left':       'speakLeftSibling',
-    '!mac:Ctrl-Alt-Left':       'speakLeftSibling',
-    'mac:Ctrl-Meta-Right':      'speakRightSibling',
-    '!mac:Ctrl-Alt-Right':      'speakRightSibling',
-    
-    'mac:Ctrl-Meta-Shift-Down': 'speakAllWithSynchronizedHighlighting',
-    '!mac:Ctrl-Alt-Shift-Down': 'speakAllWithSynchronizedHighlighting',
+    'mac:Ctrl-Meta-Up':           ['speak', 'parent', {withHighlighting: false}],
+    '!mac:Ctrl-Alt-Up':           ['speak', 'parent', {withHighlighting: false}],
+    'mac:Ctrl-Meta-Down':         ['speak', 'group', {withHighlighting: false}],
+    '!mac:Ctrl-Alt-Down':         ['speak', 'group', {withHighlighting: false}],
+    'mac:Ctrl-Meta-Left':         ['speak', 'left', {withHighlighting: false}],
+    '!mac:Ctrl-Alt-Left':         ['speak', 'left', {withHighlighting: false}],
+    'mac:Ctrl-Meta-Right':        ['speak', 'right', {withHighlighting: false}],
+    '!mac:Ctrl-Alt-Right':        ['speak', 'right', {withHighlighting: false}],
+    '!mac:Ctrl-Alt-Period':       ['speak', 'selection', {withHighlighting: false}],
+    'mac:Ctrl-Meta-Period':       ['speak', 'selection', {withHighlighting: false}],
+  
+    'mac:Ctrl-Meta-Shift-Up':     ['speak', 'parent', {withHighlighting: true}],
+    '!mac:Ctrl-Alt-Shift-Up':     ['speak', 'parent', {withHighlighting: true}],
+    'mac:Ctrl-Meta-Shift-Down':   ['speak', 'group', {withHighlighting: true}],
+    '!mac:Ctrl-Alt-Shift-Down':   ['speak', 'group', {withHighlighting: true}],
+    'mac:Ctrl-Meta-Shift-Left':   ['speak', 'left', {withHighlighting: true}],
+    '!mac:Ctrl-Alt-Shift-Left':   ['speak', 'left', {withHighlighting: true}],
+    'mac:Ctrl-Meta-Shift-Right':  ['speak', 'right', {withHighlighting: true}],
+    '!mac:Ctrl-Alt-Shift-Right':  ['speak', 'right', {withHighlighting: true}],
+    '!mac:Ctrl-Alt-Shift-Period': ['speak', 'selection', {withHighlighting: true}],
+    'mac:Ctrl-Meta-Shift-Period': ['speak', 'selection', {withHighlighting: true}],
+    // '!mac:Ctrl-Alt-Shift-Home': ['speak', 'start', {withHighlighting: true}],
+    // 'mac:Ctrl-Alt-Shift-Home':  ['speak', 'start', {withHighlighting: true}],
+    // '!mac:Ctrl-Alt-Shift-End':  ['speak', 'end', {withHighlighting: true}],
+    // 'mac:Ctrl-Alt-Shift-End':   ['speak', 'end', {withHighlighting: true}],
 }
@@ -289,3 +303,3 @@
     // Primes
-    "''":                 '^{\\doubleprime}',
+    "''":                   { mode: 'math', value: '^{\\doubleprime}'},
 
@@ -296,3 +310,4 @@ // Greek letters
     'Delta':                '\\Delta',
-    'pi':                   '\\pi',
+    'pi':                   { mode: 'math', value: '\\pi'},
+    'pi ':                  { mode: 'text', value: '\\pi '},
     'π':                    '\\pi',
@@ -304,13 +319,15 @@ 'Pi':                   '\\Pi',
     // Letter-like
-    'ii':                   '\\imaginaryI',
-    'jj':                   '\\imaginaryJ',
+    'ii':                   { after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text', 
+                                value: '\\imaginaryI' },
+    'jj':                   { after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text', 
+                                value: '\\imaginaryJ' },
     'ee':                   {
                                 mode: 'math',
-                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space',
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
                                 value: '\\exponentialE',
                             },
 
-    'nabla':                '\\nabla',
-    'grad':                 '\\nabla',
-    'del':                  '\\partial',
+    'nabla':                { mode: 'math', value: '\\nabla'},
+    'grad':                 { mode: 'math', value: '\\nabla'},
+    'del':                  { mode: 'math', value: '\\partial'},
 
@@ -327,19 +344,19 @@ '\u221e':               '\\infty',         // @TODO: doesn't work
     // Big operators
-    '∑':                    '\\sum',
-    'sum':                  '\\sum_{#?}^{#?}',
-    'prod':                 '\\prod_{#?}^{#?}',
-    'sqrt':                 '\\sqrt',
+    '∑':                    { mode: 'math', value: '\\sum'},
+    'sum':                  { mode: 'math', value: '\\sum_{#?}^{#?}' },
+    'prod':                 { mode: 'math', value: '\\prod_{#?}^{#?}' },
+    'sqrt':                 { mode: 'math', value: '\\sqrt'},
     // '∫':                    '\\int',             // There's a alt-B command for this
-    '∆':                    '\\differentialD',     // @TODO: is \\diffD most common?
-    '∂':                    '\\differentialD',
+    '∆':                    { mode: 'math', value: '\\differentialD'},     // @TODO: is \\diffD most common?
+    '∂':                    { mode: 'math', value: '\\differentialD'},
 
     // Functions
-    'sin':                  '\\sin',
-    'cos':                  '\\cos',
-    'tan':                  '\\tan',
-    'tanh':                 '\\tanh',
-    'log':                  '\\log',
-    'ln':                   '\\ln',
-    'exp':                  '\\exp',
-    'lim':                  '\\lim_{#?}',
+    'sin':                  { mode: 'math', value: '\\sin'},
+    'cos':                  { mode: 'math', value: '\\cos'},
+    'tan':                  { mode: 'math', value: '\\tan'},
+    'tanh':                 { mode: 'math', value: '\\tanh'},
+    'log':                  { mode: 'math', value: '\\log'},
+    'ln':                   { mode: 'math', value: '\\ln'},
+    'exp':                  { mode: 'math', value: '\\exp'},
+    'lim':                  { mode: 'math', value: '\\lim_{#?}'},
 
@@ -353,6 +370,6 @@ // Differentials
     // Logic
-    'AA':                   '\\forall',
-    'EE':                   '\\exists',
-    '!EE':                  '\\nexists',
-    '&&':                   '\\land',
+    'AA':                   { mode: 'math', value: '\\forall'},
+    'EE':                   { mode: 'math', value: '\\exists'},
+    '!EE':                  { mode: 'math', value: '\\nexists'},
+    '&&':                   { mode: 'math', value: '\\land'},
     // The shortcut for the greek letter "xi" is interfering with "x in"
@@ -369,3 +386,3 @@ 'xin':                   {
                             },
-    '!in':                  '\\notin',
+    '!in':                  { mode: 'math', value: '\\notin'},
 
@@ -409,3 +426,12 @@ // Sets
     'varepsilon':           '\\varepsilon',
-    'eta':                  '\\eta',
+    'eta':                  { 
+                                mode: 'math',
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value: '\\eta'
+                            },
+    'eta ':                 { 
+                                mode: 'text',
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value: '\\eta '
+                            },
     'gamma':                '\\gamma',
@@ -417,18 +443,58 @@ 'Gamma':                '\\Gamma',
     'Lambda':               '\\Lambda',
-    'mu':                   '\\mu',
-    'nu':                   '\\nu',
+    'mu':                   {
+                                mode: 'math',
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value: '\\mu'
+                            },
+    'mu ':                   {
+                                mode: 'text',
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value: '\\mu '
+                            },
+    'nu':                   {
+                                mode: 'math',
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value:'\\nu'
+                            },
+    'nu ':                   {
+                                mode: 'text',
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value:'\\nu '
+                            },
     'µ':                    '\\mu',        // @TODO: or micro?
-    'phi':                  '\\phi',
-    'Phi':                  '\\Phi',
+    'phi':                  {
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value: '\\phi'
+                            },
+    'Phi':                  {
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value:'\\Phi'
+                            },
     'varphi':               '\\varphi',
-    'psi':                  '\\psi',
-    'Psi':                  '\\Psi',
-    'rho':                  '\\rho',
+    'psi':                  {
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value: '\\psi'
+                            },
+    'Psi':                  {
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value:'\\Psi'
+    },
+    'rho':                  {
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value: '\\rho'
+    },
     'sigma':                '\\sigma',
     'Sigma':                '\\Sigma',
-    'tau':                  '\\tau',
+    'tau':                  {
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value: '\\tau'
+    },
     'vartheta':             '\\vartheta',
     'upsilon':              '\\upsilon',
-    'xi':                   '\\xi',
-    'Xi':                   '\\Xi',
+    'xi':                   {
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value:'\\xi'},
+    'Xi':                   {
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value:'\\Xi'},
     'zeta':                 '\\zeta',
@@ -441,5 +507,14 @@ 'omega':                '\\omega',
     'forall':               '\\forall',
-    'exists':               '\\exists',
-    '!exists':              '\\nexists',
-    ':.':                   '\\therefore',
+    'exists':               {
+                                mode: 'math',
+                                value:'\\exists'
+                            },
+    '!exists':              {
+                                mode: 'math',
+                                value: '\\nexists'
+                            },
+    ':.':                   {
+                                mode: 'math',
+                                value:'\\therefore'
+    },
 
@@ -453,29 +528,56 @@ // MORE FUNCTIONS
     'det':                  '\\det',
-    'mod':                  '\\mod',
-    'max':                  '\\max',
-    'min':                  '\\min',
+    'mod':                  {
+                                mode: 'math',
+                                value:'\\mod'},
+    'max':                  {
+                                mode: 'math',
+                                value:'\\max'},
+    'min':                  {
+                                mode: 'math',
+                                value:'\\min'},
     'erf':                  '\\operatorname{erf}',
     'erfc':                 '\\operatorname{erfc}',
-    'bessel':               '\\operatorname{bessel}',
-    'mean':                 '\\operatorname{mean}',
-    'median':               '\\operatorname{median}',
-    'fft':                  '\\operatorname{fft}',
-    'lcm':                  '\\operatorname{lcm}',
-    'gcd':                  '\\operatorname{gcd}',
+    'bessel':               {
+                                mode: 'math',
+                                value:'\\operatorname{bessel}'},
+    'mean':                 {
+                                mode: 'math',
+                                value: '\\operatorname{mean}'
+    },
+    'median':               {
+                                mode: 'math',
+                                value: '\\operatorname{median}'},
+    'fft':                  {
+                                mode: 'math',
+                                value:'\\operatorname{fft}'},
+    'lcm':                  {
+                                mode: 'math',
+                                value:'\\operatorname{lcm}'},
+    'gcd':                  {
+                                mode: 'math',
+                                value:'\\operatorname{gcd}'},
     'randomReal':           '\\operatorname{randomReal}',
     'randomInteger':        '\\operatorname{randomInteger}',
-    'Re':                   '\\operatorname{Re}',
-    'Im':                   '\\operatorname{Im}',
+    'Re':                   {
+                                mode: 'math',
+                                value:'\\operatorname{Re}'},
+    'Im':                   {
+                                mode: 'math',
+                                value:'\\operatorname{Im}'},
 
     // UNITS
-    'mm':                   {  after: 'digit', 
+    'mm':                   {   mode: 'math',
+                                after: 'nothing+digit', 
                                 value:  '\\operatorname{mm}',         // millimeter
                             },
-    'cm':                   {  after: 'digit', 
+    'cm':                   {   mode: 'math',
+                                after: 'nothing+digit', 
                                 value:  '\\operatorname{cm}',         // centimeter
                             },
-    'km':                   {  after: 'digit', 
+    'km':                   {   mode: 'math',
+                                after: 'nothing+digit', 
                                 value:  '\\operatorname{km}',         // kilometer
                             },
-    'kg':                   {  after: 'digit', 
+    'kg':                   {   mode: 'math',
+                                after: 'nothing+digit', 
                                 value:  '\\operatorname{kg}',         // kilogram
@@ -636,9 +738,13 @@ },
  * 
+ * @param {string} mode
  * @param {object[]} siblings atoms preceding this potential shortcut
  * @param {string} shortcut 
  */
-function validateShortcut(siblings, shortcut) {
+function validateShortcut(mode, siblings, shortcut) {
+    if (!shortcut) return shortcut
     // If it's a simple shortcut (no conditional), it's valid
     if (typeof shortcut === 'string') return shortcut
 
+    if (typeof shortcut.mode === 'string' && shortcut.mode !== mode) return null;
+
     // If we have no context, we assume all the shortcuts are valid
@@ -663,3 +769,3 @@ if (!siblings) return shortcut ? shortcut.value : undefined;
     let index = siblings.length - 1;
-    while (sibling && sibling.type === 'msubsup') {
+    while (sibling && /msubsup|placeholder/.test(sibling.type)) {
         index -= 1;
@@ -685,3 +791,3 @@ sibling = siblings[index];
 
-    if (typeof shortcut === 'object') {
+    if (typeof shortcut.after !== 'undefined') {
         // If this is a conditional shortcut, consider the conditions now
@@ -702,9 +808,8 @@ if (    (/nothing/.test(shortcut.after) && nothing) ||
                 (/space/.test(shortcut.after) && space)){
-            shortcut = shortcut.value;
-        } else {
-            shortcut = null;
+            return shortcut.value;
         }
+        return null;
     }
 
-    return shortcut;
+    return shortcut.value;
 }
@@ -715,2 +820,3 @@
  * 
+ * @param {string} mode
  * @param {string} context - atoms preceding the candidate, potentially used
@@ -725,3 +831,3 @@ * to reduce which shortcuts are applicable. If 'null', no restrictions are
  */
-function forString(context, s, config) {
+function forString(mode, context, s, config) {
     let result = '';
@@ -731,3 +837,3 @@
     if (!skipDefaultShortcuts) {
-        result = validateShortcut(context, INLINE_SHORTCUTS[s]);
+        result = validateShortcut(mode, context, INLINE_SHORTCUTS[s]);
     }
@@ -739,3 +845,3 @@
     if (customInlineShortcuts) {
-        customResult = validateShortcut(context, customInlineShortcuts[s]);
+        customResult = validateShortcut(mode, context, customInlineShortcuts[s]);
     }
@@ -742,0 +848,0 @@

dist/src/editor/editor-undo.js

@@ -156,2 +156,7 @@ /**
     restore(state, options) {
+        const wasSuppressing = this.mathlist.suppressChangeNotifications;
+        if (options.suppressChangeNotifications !== undefined) {
+            this.mathlist.suppressChangeNotifications = options.suppressChangeNotifications;
+        }
+        
         // Restore the content
@@ -165,4 +170,7 @@ this.mathlist.insert(state ? state.latex : '', {
         });
+
         // Restore the selection
         this.mathlist.setPath(state ? state.selection : [{relation: 'body', offset: 0}]);
+
+        this.mathlist.suppressChangeNotifications = wasSuppressing;
     }
@@ -169,0 +177,0 @@ }

dist/src/editor/l10n.js

@@ -5,11 +5,4 @@
 export function l10n(s) {
-    // Use the browser defined language as the default language,
-    // "english" if not running in a browser (node.js)
-    if (!l10n._locale) {
-        // Use the setter, which will load the necessary .json files.
-        l10n.locale = typeof navigator === 'undefined' ? 'en' : 
-            navigator.language.slice(0, 5);
-    }
 
-    const language = l10n._locale.substring(0, 2);
+    const language = l10n.locale.substring(0, 2);
 
@@ -19,3 +12,3 @@ let result = '';
     // Attempt to find a match for the current locale
-    if (l10n.strings[l10n._locale]) result = l10n.strings[l10n._locale][s];
+    if (l10n.strings[l10n.locale]) result = l10n.strings[l10n.locale][s];
     // If none is found, attempt to find a match for the language
@@ -50,3 +43,3 @@ if (!result && l10n.strings[language]) result = l10n.strings[language][s];
         strings = locale;
-        for (const l of strings) {
+        for (const l in strings) {
             if (strings.hasOwnProperty(l)) {
@@ -66,2 +59,9 @@ l10n.merge(l, strings[l]);
     get() {
+        // Use the browser defined language as the default language,
+        // "english" if not running in a browser (node.js)
+        if (!l10n._locale) {
+            // Use the setter, which will load the necessary .json files.
+            l10n._locale = typeof navigator === 'undefined' ? 'en' : 
+                navigator.language.slice(0, 5);
+        }
         return l10n._locale
@@ -84,2 +84,13 @@ }
     },
+    "ar": {
+      "keyboard.tooltip.functions": "مهام",
+      "keyboard.tooltip.greek": "حروف يونانية",
+      "keyboard.tooltip.command": "حالة تلقي الأوامر اللاتك",
+      "keyboard.tooltip.numeric": "الرقمية",
+      "keyboard.tooltip.roman": "رموز الاحرف الرومانية",
+      "tooltip.copy to clipboard": "نسخ إلى الحافظة",
+      "tooltip.redo": "الإعادة",
+      "tooltip.toggle virtual keyboard": "تبديل لوحة المفاتيح الإفتراضية",
+      "tooltip.undo": "إلغاء"
+    },
     "de": {
@@ -94,3 +105,3 @@ "keyboard.tooltip.functions": "Funktionen",
         "tooltip.toggle virtual keyboard": "Virtuelle Tastatur umschalten",
-        "tooltip.undo": "Rückgängig machen"
+        "tooltip.undo": "Widerrufen"
     },
@@ -108,2 +119,13 @@ "es": {
     },
+    "fa": {
+      "keyboard.tooltip.functions": "توابع",
+      "keyboard.tooltip.greek": "حروف یونانی",
+      "keyboard.tooltip.command": "حالت دستور لاتک",
+      "keyboard.tooltip.numeric": "عددی",
+      "keyboard.tooltip.roman": "علائم و حروف لاتین",
+      "tooltip.copy to clipboard": "کپی به کلیپبورد",
+      "tooltip.redo": "بازگشت به بعد",
+      "tooltip.toggle virtual keyboard": "نمایش/نهفتن کیبورد مجازی",
+      "tooltip.undo": "بازگشت به قبل"
+    },
     "fr": {
@@ -115,4 +137,4 @@ "keyboard.tooltip.functions": "Fonctions",
         "keyboard.tooltip.roman": "Lettres et symboles romains",
-        "tooltip.copy to clipboard": "Copier dans le Presse-papiers",
-        "tooltip.redo": "Refaire",
+        "tooltip.copy to clipboard": "Copier dans le presse-papiers",
+        "tooltip.redo": "Rétablir",
         "tooltip.toggle virtual keyboard": "Afficher/Masquer le clavier virtuel",
@@ -119,0 +141,0 @@ "tooltip.undo": "Annuler"

package.json

 {
   "name": "mathlive",
-  "version": "0.28.0",
+  "version": "0.29.0",
   "description": "Render and edit beautifully typeset math",
@@ -29,25 +29,30 @@ "license": "MIT",
   "scripts": {
-    "preclean": "echo '\\033[0;32mClean...\\033[0m'",
+    "preclean": "echo Clean directories...",
     "clean": "rimraf build dist docs",
-    "build-js": "echo '\\033[0;32mESLint...\\033[0m' && eslint src/ -c .eslintrc.json",
+    "build-js": "eslint src/ -c .eslintrc.json",
     "watch-js": "esw -w src/",
-    "build-css": "echo '\\033[0;32mCompile .less...\\033[0m' & lessc css/mathlive.core.less dist/mathlive.core.css & lessc css/mathlive.less dist/mathlive.css",
-    "watch-css": "chokidar 'css/*.less' --initial -c 'npm run build-css -s'",
+    "build-corecss": "lessc css/mathlive.core.less dist/mathlive.core.css",
+    "build-othercss": "lessc css/mathlive.less dist/mathlive.css",
+    "build-postcss": "postcss dist/*.css -d dist",
+    "build-css": "npm-run-all -s build-corecss build-othercss build-postcss",
+    "watch-css": "chokidar \"css/*.less\" --initial -c \"npm run build-css -s\"",
     "build": "npm-run-all -p build-css build-js rollup",
-    "watch": "npm-run-all -p watch-css watch-js watch-test watch-rollup",
-    "start": "npm run watch & http-server ./ -c-1 --cors='*' -P https://mathlive.io & opn http://localhost:8080/examples/",
-    "dev": "npm start & npm run watch -s",
-    "lint": "eslint src/ -c",
-    "pretest": "echo '\\033[0;32mTest...\\033[0m'",
+    "watch": "npm-run-all -p watch-*",
+    "http-server": "http-server ./ -c-1 --cors='*'",
+    "open": "opn http://localhost:8080/examples/",
+    "start": "npm-run-all -p watch* http-server open",
+    "lint": "eslint src/ -c .eslintrc.json",
+    "pretest": "echo Test...",
     "test": "tape -r @babel/register test/* | tap-spec",
-    "watch-test": "chokidar src/*.js -c 'npm run test -s' ",
-    "coverage": "nyc node ./test/test.js && nyc report",
+    "watch-test": "chokidar \"src/*.js\" -c \"npm run test -s\" ",
+    "coverage": "nyc npm run babel-node ./test/test.js && nyc report",
+    "coverage:report": "nyc report",
     "prepare": "npm run dist",
-    "predocs": "echo '\\033[0;32mBuild docs...\\033[0m'",
-    "docs": "jsdoc -c ./jsdoc.conf.json && echo \"docs.mathlive.io\" > docs/CNAME",
-    "watch-docs": "chokidar 'src/*.js' 'tutorials/*.md' 'examples/*.md' -c 'npm run docs -s'",
-    "prerollup": "echo '\\033[0;32mRollup...\\033[0m'",
+    "predocs": "echo Build docs...",
+    "docs": "jsdoc -c ./jsdoc.conf.json && echo docs.mathlive.io > docs/CNAME",
+    "watch-docs": "chokidar \"src/*.js\" \"tutorials/*.md\" \"examples/*.md\" -c \"npm run docs -s\"",
+    "prerollup": "echo Rollup...",
     "rollup": "rollup --config",
     "watch-rollup": "rollup --config --watch",
-    "dist": "npm run clean -s && cpx \"src/**\" dist/src && npm run build -s && postcss dist/*.css -d dist && npm run docs -s && npm test"
+    "dist": "npm-run-all -s clean build docs test"
   },
@@ -84,23 +89,22 @@ "nyc": {
   "devDependencies": {
-    "@babel/cli": "^7.4.3",
-    "@babel/core": "^7.4.3",
-    "@babel/polyfill": "^7.4.3",
-    "@babel/preset-env": "^7.4.3",
-    "@babel/register": "^7.4.0",
+    "@babel/cli": "^7.4.4",
+    "@babel/core": "^7.4.4",
+    "@babel/polyfill": "^7.4.4",
+    "@babel/preset-env": "^7.4.4",
+    "@babel/register": "^7.4.4",
     "autoprefixer": "^9.5.1",
     "chokidar-cli": "^1.2.2",
-    "cpx": "latest",
     "cssnano": "^4.1.10",
     "eslint": "^5.16.0",
-    "eslint-watch": "^5.0.1",
+    "eslint-watch": "^5.1.2",
     "http-server": "^0.11.1",
-    "jsdoc": "^3.5.5",
+    "jsdoc": "^3.6.1",
     "less": "^3.9.0",
     "npm-run-all": "^4.1.5",
-    "nyc": "^13.3.0",
+    "nyc": "^14.1.0",
     "opn-cli": "^4.1.0",
     "postcss-cli": "^6.1.2",
     "rimraf": "^2.6.3",
-    "rollup": "^1.10.1",
-    "rollup-plugin-copy": "^1.0.0",
+    "rollup": "^1.11.3",
+    "rollup-plugin-copy": "^1.1.0",
     "rollup-plugin-terser": "^4.0.4",
@@ -107,0 +111,0 @@ "sutro-jsdoc-theme": "^1.0",

README.md

@@ -19,10 +19,10 @@ <img alt="math live" src="assets/logo-1024.jpg?raw=true">
 
-- [x] Fast and small
 - [x] Tex-quality typesetting
 - [x] Easy to use interface for math editing
-- [x] Works great on desktop and on mobile devices thanks to an extensive set of virtual keyboards. 
-- [x] Comprehensive APIs, including generation of **LaTeX**, **MathML** and **Abstract Syntax Tree (MASTON)**
-- [x] And it is easy to customize to your needs! 
+- [x] Fast and small
+- [x] Works great on desktop and on mobile devices thanks to an extensive set of virtual keyboards
+- [x] Outputs **LaTeX**, **MathML** and **JSON** (Abstract Syntax Tree, MASTON)**
+- [x] And it is easy to customize to your needs!
 
-Try it at [mathlive.io](https://mathlive.io)!
+Try it at [mathlive.io](https://mathlive.io)
 
@@ -119,3 +119,3 @@ <table align="center" >
 $ npm install -s mathlive
-$ npm run start
+$ npm start
 ```
@@ -122,0 +122,0 @@ This will make a local build of MathLive, run a local HTTP server and open a page with the examples in your browser.

src/addons/outputLatex.js

@@ -16,3 +16,4 @@ /**
     while (atoms[i]) {
-        if (atoms[i].type !== 'mop' && atoms[i][property] !== value) break
+        if (atoms[i].type !== 'mop' && 
+            atoms[i][property] !== value) break
         i++;
@@ -128,2 +129,5 @@ }
                 suffix = '}';
+            } else if (atoms[0].fontSeries && atoms[0].fontSeries !== 'n') {
+                prefix = '{\\fontSeries{' + atoms[0].fontSeries + '}';
+                suffix = '}';
             }
@@ -138,2 +142,5 @@ } else if (prop === 'fontShape') {
                 suffix = '}';
+            } else if (atoms[0].fontShape && atoms[0].fontShape !== 'n') {
+                prefix = '{\\fontShape{' + atoms[0].fontShape + '}';
+                suffix = '}';
             }
@@ -186,2 +193,9 @@
 
+    if (prop === 'backgroundColor' && atoms[0].backgroundColor &&
+         atoms[0].backgroundColor !== 'none' &&
+         (!parent || parent.backgroundColor !== atoms[0].backgroundColor)) {
+        prefix = '\\colorbox{' + Color.colorToString(atoms[0].backgroundColor) + '}{';
+        suffix = '}';
+    }
+
     result += prefix;
@@ -228,5 +242,5 @@
             ], value, expandMacro);
-        if (result.startsWith('{') && result.endsWith('}')) {
-            result = result.slice(1, result.length - 1);
-        }
+        // if (result.startsWith('{') && result.endsWith('}')) {
+        //     result = result.slice(1, result.length - 1);
+        // }
 
@@ -266,9 +280,14 @@ } else if (typeof value === 'number' || typeof value === 'boolean') {
             if (this.cssId) result += '\\cssId{' + this.cssId + '}{';
-            if (this.cssClass) result += '\\class{' + this.cssClass + '}{';
 
-            result += expandMacro ? latexify(this, this.body, true) :
-                (this.latex || latexify(this, this.body, false));
+            if (this.cssClass === 'ML__emph') {
+                result += '\\emph{' + latexify(this, this.body, expandMacro) + '}';
+            } else {
+                if (this.cssClass) result += '\\class{' + this.cssClass + '}{';
 
+                result += expandMacro ? latexify(this, this.body, true) :
+                    (this.latex || latexify(this, this.body, false));
+
+                if (this.cssClass) result += '}';
+            }
             if (this.cssId) result += '}';
-            if (this.cssClass) result += '}';
 
@@ -343,6 +362,6 @@ result += this.latexClose || ((this.cssId || this.cssClass) ? '' : '}');
             } else {
-                result += this.leftDelim === '.' ? '' : (this.leftDelim || '');
+                result += '\\mleft' + (this.leftDelim || '.');
                 if (this.leftDelim && this.leftDelim.length > 1) result += ' ';
                 result += latexify(this, this.body, expandMacro);
-                result += (!this.rightDelim || this.rightDelim === '?' || this.rightDelim === '.') ? '' : this.rightDelim;
+                result += '\\mright' + (this.rightDelim || '.');
                 if (this.rightDelim && this.rightDelim.length > 1) result += ' ';
@@ -444,3 +463,3 @@ }
                     if (isFinite(this.padding)) {
-                        bboxParams.push(Math.floor(1e5 * this.padding) / 1e5 + 'em')
+                        bboxParams.push(Math.floor(1e2 * this.padding) / 1e2 + 'em')
                     }
@@ -447,0 +466,0 @@ if (this.border) {

src/core/fontMetrics.js

@@ -326,5 +326,10 @@ /* eslint no-unused-vars:0 */
 
+function convertDimenToPx(value, unit) {
+    return convertDimenToEm(value, unit) * (4.0 / 3.0) * METRICS.ptPerEm;
+}
 
+
 export default {
     toEm : convertDimenToEm,
+    toPx: convertDimenToPx,
     METRICS,
@@ -331,0 +336,0 @@ SIGMAS,

src/core/lexer.js

@@ -222,6 +222,2 @@ /**
             // }
-        } else if (this.peek() === '^') {
-            result = new Token(this.get());
-        } else if (this.peek() === '_') {
-            result = new Token(this.get());
         } else if (this.peek() === '~') {
@@ -228,0 +224,0 @@ // Spacing

src/core/parser.js

@@ -684,2 +684,4 @@
         this.parseToken('}');
+        result.latexOpen = '{';
+        result.latexClose = '}';
         return result;
@@ -798,10 +800,10 @@ }
         let result = false;
-        while (this.hasToken('^') || this.hasToken('_') || this.hasLiteral("'")) {
+        while (this.hasLiteral('^') || this.hasLiteral('_') || this.hasLiteral("'")) {
             let supsub;
-            if (this.hasToken('^')) {
+            if (this.hasLiteral('^')) {
                 supsub = 'superscript';
-            } else if (this.hasToken('_')) {
+            } else if (this.hasLiteral('_')) {
                 supsub = 'subscript';
             }
-            if (this.parseToken('^') || this.parseToken('_')) {
+            if (this.parseLiteral('^') || this.parseLiteral('_')) {
                 const arg = this.scanArg();
@@ -808,0 +810,0 @@ if (arg) {

src/core/span.js

@@ -21,3 +21,3 @@ /**
     if (typeof arg === 'number') {
-        result += Math.floor(1e5 * arg) / 1e5;
+        result += Math.floor(1e2 * arg) / 1e2;
     } else if (typeof arg === 'string') {
@@ -218,3 +218,3 @@ result += arg;
             this.classes += ' ' + FONT_CLASS[fontFamily];
-        } else {
+        } else if (fontFamily) {
             // Not a well-known family. Use a style.
@@ -374,8 +374,11 @@ this.setStyle('font-family', fontFamily);
         }
-        const tag = this.tag || 'span';
+        // Collapse 'empty' spans
+        if ((body === '\u200b' || !body) && 
+            (!this.classes || this.classes === 'ML__selected')) {
+            result = '';
 
-        if (tag.length === 0) {
-            result = body || '';
         } else {
-            result = '<' + tag;
+            // Note: We can't omit the tag, even if it has no class and no style,
+            // as some layouts (vlist) depends on the presence of the tag to function
+            result = '<span';
 
@@ -387,4 +390,5 @@ if (this.cssId) {
             if (this.svgOverlay) {
-                if (!this.style) this.style = {};
-                this.style['position'] = 'relative';
+                this.setStyle('position', 'relative');
+                this.setStyle('height', this.height + this.depth, 'em');
+                this.setStyle('vertical-align', -this.depth, 'em');
             }
@@ -472,5 +476,25 @@
             if (this.svgOverlay) {
-                result += body; // @todo maybe safe encode here...? (< >)
-                result += '<svg ';
-                result += 'style="position:absolute;left:0;top:0;width:100%;height:100%;z-index:2;';
+                result += '<span style="';
+                result += 'display: inline-block;';
+                result += 'height:' + (this.height + this.depth) + 'em;';
+                result += 'vertical-align:' + this.depth + 'em;';
+                result += '">';
+                result += body;
+                result += '</span>';
+                result += '<svg ';                
+                // result += 'style="position:absolute;left:0;top:0;width:100%;height:100%;z-index:2;';
+                result += 'style="position:absolute;';
+                result += 'overflow:overlay;';
+                result += 'height:' + (this.height + this.depth) + 'em;';
+                result += 'transform:translateY(' + Math.round(- FontMetrics.toPx(this.depth, 'em') + 2 * FontMetrics.toPx(this.style.padding)) + 'px);';
+                if (this.style && this.style.padding) {
+                    result += 'top:' + this.style.padding + ';';
+                    result += 'left:' + this.style.padding + ';';
+                    result += 'width:calc(100% - 2 * ' + this.style.padding + ' );';
+                } else {
+                    result += 'top:0;';
+                    result += 'left:0;';
+                    result += 'width:100%;';
+                }
+                result += 'z-index:2;';
                 result += '"';
@@ -484,14 +508,8 @@ if (this.svgStyle) {
             } else {
-                result += body; // @todo maybe safe encode here...? (< >)
+                result += body;
             }
 
-            // Note: We can't omit the tag, even if it has no class and no style,
-            // as some layouts (vlist) depends on the presence of the tag to function
-            result = result + '</' + tag + '>';
+            result = result + '</span>';
         }
 
-        // Collapse 'empty' spans
-        if (result === '<span>\u200b</span>') {
-            result = '';
-        }
 
@@ -498,0 +516,0 @@ if (this.caret && this.type !== 'command') {

src/editor/editor-keyboard.js

@@ -25,4 +25,5 @@
 const KEY_NAMES = {
+    'Space':        'Spacebar',
+    ' ':            'Spacebar',
     'Escape':       'Esc',
-    ' ':            'Spacebar',
     'ArrowLeft':    'Left',
@@ -122,2 +123,6 @@ 'ArrowUp':      'Up',
 
+    if (!keyname && evt.code) {
+        keyname = KEY_NAMES[evt.code] || evt.code;
+    }
+
     if (!keyname) {
@@ -128,3 +133,3 @@ if (INTL_KEY[evt.key]) {
         } else {
-            keyname = KEY_NAMES[evt.key] || evt.code;
+            keyname = KEY_NAMES[evt.key];
         }
@@ -131,0 +136,0 @@

src/editor/editor-shortcuts.js

@@ -231,13 +231,27 @@ /**
 */
-    'mac:Ctrl-Meta-Up':         'speakParent',
-    '!mac:Ctrl-Alt-Up':         'speakParent',
-    'mac:Ctrl-Meta-Down':       'speakGroup',
-    '!mac:Ctrl-Alt-Down':       'speakGroup',
-    'mac:Ctrl-Meta-Left':       'speakLeftSibling',
-    '!mac:Ctrl-Alt-Left':       'speakLeftSibling',
-    'mac:Ctrl-Meta-Right':      'speakRightSibling',
-    '!mac:Ctrl-Alt-Right':      'speakRightSibling',
-    
-    'mac:Ctrl-Meta-Shift-Down': 'speakAllWithSynchronizedHighlighting',
-    '!mac:Ctrl-Alt-Shift-Down': 'speakAllWithSynchronizedHighlighting',
+    'mac:Ctrl-Meta-Up':           ['speak', 'parent', {withHighlighting: false}],
+    '!mac:Ctrl-Alt-Up':           ['speak', 'parent', {withHighlighting: false}],
+    'mac:Ctrl-Meta-Down':         ['speak', 'group', {withHighlighting: false}],
+    '!mac:Ctrl-Alt-Down':         ['speak', 'group', {withHighlighting: false}],
+    'mac:Ctrl-Meta-Left':         ['speak', 'left', {withHighlighting: false}],
+    '!mac:Ctrl-Alt-Left':         ['speak', 'left', {withHighlighting: false}],
+    'mac:Ctrl-Meta-Right':        ['speak', 'right', {withHighlighting: false}],
+    '!mac:Ctrl-Alt-Right':        ['speak', 'right', {withHighlighting: false}],
+    '!mac:Ctrl-Alt-Period':       ['speak', 'selection', {withHighlighting: false}],
+    'mac:Ctrl-Meta-Period':       ['speak', 'selection', {withHighlighting: false}],
+  
+    'mac:Ctrl-Meta-Shift-Up':     ['speak', 'parent', {withHighlighting: true}],
+    '!mac:Ctrl-Alt-Shift-Up':     ['speak', 'parent', {withHighlighting: true}],
+    'mac:Ctrl-Meta-Shift-Down':   ['speak', 'group', {withHighlighting: true}],
+    '!mac:Ctrl-Alt-Shift-Down':   ['speak', 'group', {withHighlighting: true}],
+    'mac:Ctrl-Meta-Shift-Left':   ['speak', 'left', {withHighlighting: true}],
+    '!mac:Ctrl-Alt-Shift-Left':   ['speak', 'left', {withHighlighting: true}],
+    'mac:Ctrl-Meta-Shift-Right':  ['speak', 'right', {withHighlighting: true}],
+    '!mac:Ctrl-Alt-Shift-Right':  ['speak', 'right', {withHighlighting: true}],
+    '!mac:Ctrl-Alt-Shift-Period': ['speak', 'selection', {withHighlighting: true}],
+    'mac:Ctrl-Meta-Shift-Period': ['speak', 'selection', {withHighlighting: true}],
+    // '!mac:Ctrl-Alt-Shift-Home': ['speak', 'start', {withHighlighting: true}],
+    // 'mac:Ctrl-Alt-Shift-Home':  ['speak', 'start', {withHighlighting: true}],
+    // '!mac:Ctrl-Alt-Shift-End':  ['speak', 'end', {withHighlighting: true}],
+    // 'mac:Ctrl-Alt-Shift-End':   ['speak', 'end', {withHighlighting: true}],
 }
@@ -289,3 +303,3 @@
     // Primes
-    "''":                 '^{\\doubleprime}',
+    "''":                   { mode: 'math', value: '^{\\doubleprime}'},
 
@@ -296,3 +310,4 @@ // Greek letters
     'Delta':                '\\Delta',
-    'pi':                   '\\pi',
+    'pi':                   { mode: 'math', value: '\\pi'},
+    'pi ':                  { mode: 'text', value: '\\pi '},
     'π':                    '\\pi',
@@ -304,13 +319,15 @@ 'Pi':                   '\\Pi',
     // Letter-like
-    'ii':                   '\\imaginaryI',
-    'jj':                   '\\imaginaryJ',
+    'ii':                   { after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text', 
+                                value: '\\imaginaryI' },
+    'jj':                   { after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text', 
+                                value: '\\imaginaryJ' },
     'ee':                   {
                                 mode: 'math',
-                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space',
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
                                 value: '\\exponentialE',
                             },
 
-    'nabla':                '\\nabla',
-    'grad':                 '\\nabla',
-    'del':                  '\\partial',
+    'nabla':                { mode: 'math', value: '\\nabla'},
+    'grad':                 { mode: 'math', value: '\\nabla'},
+    'del':                  { mode: 'math', value: '\\partial'},
 
@@ -327,19 +344,19 @@ '\u221e':               '\\infty',         // @TODO: doesn't work
     // Big operators
-    '∑':                    '\\sum',
-    'sum':                  '\\sum_{#?}^{#?}',
-    'prod':                 '\\prod_{#?}^{#?}',
-    'sqrt':                 '\\sqrt',
+    '∑':                    { mode: 'math', value: '\\sum'},
+    'sum':                  { mode: 'math', value: '\\sum_{#?}^{#?}' },
+    'prod':                 { mode: 'math', value: '\\prod_{#?}^{#?}' },
+    'sqrt':                 { mode: 'math', value: '\\sqrt'},
     // '∫':                    '\\int',             // There's a alt-B command for this
-    '∆':                    '\\differentialD',     // @TODO: is \\diffD most common?
-    '∂':                    '\\differentialD',
+    '∆':                    { mode: 'math', value: '\\differentialD'},     // @TODO: is \\diffD most common?
+    '∂':                    { mode: 'math', value: '\\differentialD'},
 
     // Functions
-    'sin':                  '\\sin',
-    'cos':                  '\\cos',
-    'tan':                  '\\tan',
-    'tanh':                 '\\tanh',
-    'log':                  '\\log',
-    'ln':                   '\\ln',
-    'exp':                  '\\exp',
-    'lim':                  '\\lim_{#?}',
+    'sin':                  { mode: 'math', value: '\\sin'},
+    'cos':                  { mode: 'math', value: '\\cos'},
+    'tan':                  { mode: 'math', value: '\\tan'},
+    'tanh':                 { mode: 'math', value: '\\tanh'},
+    'log':                  { mode: 'math', value: '\\log'},
+    'ln':                   { mode: 'math', value: '\\ln'},
+    'exp':                  { mode: 'math', value: '\\exp'},
+    'lim':                  { mode: 'math', value: '\\lim_{#?}'},
 
@@ -353,6 +370,6 @@ // Differentials
     // Logic
-    'AA':                   '\\forall',
-    'EE':                   '\\exists',
-    '!EE':                  '\\nexists',
-    '&&':                   '\\land',
+    'AA':                   { mode: 'math', value: '\\forall'},
+    'EE':                   { mode: 'math', value: '\\exists'},
+    '!EE':                  { mode: 'math', value: '\\nexists'},
+    '&&':                   { mode: 'math', value: '\\land'},
     // The shortcut for the greek letter "xi" is interfering with "x in"
@@ -369,3 +386,3 @@ 'xin':                   {
                             },
-    '!in':                  '\\notin',
+    '!in':                  { mode: 'math', value: '\\notin'},
 
@@ -409,3 +426,12 @@ // Sets
     'varepsilon':           '\\varepsilon',
-    'eta':                  '\\eta',
+    'eta':                  { 
+                                mode: 'math',
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value: '\\eta'
+                            },
+    'eta ':                 { 
+                                mode: 'text',
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value: '\\eta '
+                            },
     'gamma':                '\\gamma',
@@ -417,18 +443,58 @@ 'Gamma':                '\\Gamma',
     'Lambda':               '\\Lambda',
-    'mu':                   '\\mu',
-    'nu':                   '\\nu',
+    'mu':                   {
+                                mode: 'math',
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value: '\\mu'
+                            },
+    'mu ':                   {
+                                mode: 'text',
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value: '\\mu '
+                            },
+    'nu':                   {
+                                mode: 'math',
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value:'\\nu'
+                            },
+    'nu ':                   {
+                                mode: 'text',
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value:'\\nu '
+                            },
     'µ':                    '\\mu',        // @TODO: or micro?
-    'phi':                  '\\phi',
-    'Phi':                  '\\Phi',
+    'phi':                  {
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value: '\\phi'
+                            },
+    'Phi':                  {
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value:'\\Phi'
+                            },
     'varphi':               '\\varphi',
-    'psi':                  '\\psi',
-    'Psi':                  '\\Psi',
-    'rho':                  '\\rho',
+    'psi':                  {
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value: '\\psi'
+                            },
+    'Psi':                  {
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value:'\\Psi'
+    },
+    'rho':                  {
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value: '\\rho'
+    },
     'sigma':                '\\sigma',
     'Sigma':                '\\Sigma',
-    'tau':                  '\\tau',
+    'tau':                  {
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value: '\\tau'
+    },
     'vartheta':             '\\vartheta',
     'upsilon':              '\\upsilon',
-    'xi':                   '\\xi',
-    'Xi':                   '\\Xi',
+    'xi':                   {
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value:'\\xi'},
+    'Xi':                   {
+                                after: 'nothing+digit+function+frac+surd+binop+relop+punct+array+openfence+closefence+space+text',
+                                value:'\\Xi'},
     'zeta':                 '\\zeta',
@@ -441,5 +507,14 @@ 'omega':                '\\omega',
     'forall':               '\\forall',
-    'exists':               '\\exists',
-    '!exists':              '\\nexists',
-    ':.':                   '\\therefore',
+    'exists':               {
+                                mode: 'math',
+                                value:'\\exists'
+                            },
+    '!exists':              {
+                                mode: 'math',
+                                value: '\\nexists'
+                            },
+    ':.':                   {
+                                mode: 'math',
+                                value:'\\therefore'
+    },
 
@@ -453,29 +528,56 @@ // MORE FUNCTIONS
     'det':                  '\\det',
-    'mod':                  '\\mod',
-    'max':                  '\\max',
-    'min':                  '\\min',
+    'mod':                  {
+                                mode: 'math',
+                                value:'\\mod'},
+    'max':                  {
+                                mode: 'math',
+                                value:'\\max'},
+    'min':                  {
+                                mode: 'math',
+                                value:'\\min'},
     'erf':                  '\\operatorname{erf}',
     'erfc':                 '\\operatorname{erfc}',
-    'bessel':               '\\operatorname{bessel}',
-    'mean':                 '\\operatorname{mean}',
-    'median':               '\\operatorname{median}',
-    'fft':                  '\\operatorname{fft}',
-    'lcm':                  '\\operatorname{lcm}',
-    'gcd':                  '\\operatorname{gcd}',
+    'bessel':               {
+                                mode: 'math',
+                                value:'\\operatorname{bessel}'},
+    'mean':                 {
+                                mode: 'math',
+                                value: '\\operatorname{mean}'
+    },
+    'median':               {
+                                mode: 'math',
+                                value: '\\operatorname{median}'},
+    'fft':                  {
+                                mode: 'math',
+                                value:'\\operatorname{fft}'},
+    'lcm':                  {
+                                mode: 'math',
+                                value:'\\operatorname{lcm}'},
+    'gcd':                  {
+                                mode: 'math',
+                                value:'\\operatorname{gcd}'},
     'randomReal':           '\\operatorname{randomReal}',
     'randomInteger':        '\\operatorname{randomInteger}',
-    'Re':                   '\\operatorname{Re}',
-    'Im':                   '\\operatorname{Im}',
+    'Re':                   {
+                                mode: 'math',
+                                value:'\\operatorname{Re}'},
+    'Im':                   {
+                                mode: 'math',
+                                value:'\\operatorname{Im}'},
 
     // UNITS
-    'mm':                   {  after: 'digit', 
+    'mm':                   {   mode: 'math',
+                                after: 'nothing+digit', 
                                 value:  '\\operatorname{mm}',         // millimeter
                             },
-    'cm':                   {  after: 'digit', 
+    'cm':                   {   mode: 'math',
+                                after: 'nothing+digit', 
                                 value:  '\\operatorname{cm}',         // centimeter
                             },
-    'km':                   {  after: 'digit', 
+    'km':                   {   mode: 'math',
+                                after: 'nothing+digit', 
                                 value:  '\\operatorname{km}',         // kilometer
                             },
-    'kg':                   {  after: 'digit', 
+    'kg':                   {   mode: 'math',
+                                after: 'nothing+digit', 
                                 value:  '\\operatorname{kg}',         // kilogram
@@ -636,9 +738,13 @@ },
  * 
+ * @param {string} mode
  * @param {object[]} siblings atoms preceding this potential shortcut
  * @param {string} shortcut 
  */
-function validateShortcut(siblings, shortcut) {
+function validateShortcut(mode, siblings, shortcut) {
+    if (!shortcut) return shortcut
     // If it's a simple shortcut (no conditional), it's valid
     if (typeof shortcut === 'string') return shortcut
 
+    if (typeof shortcut.mode === 'string' && shortcut.mode !== mode) return null;
+
     // If we have no context, we assume all the shortcuts are valid
@@ -663,3 +769,3 @@ if (!siblings) return shortcut ? shortcut.value : undefined;
     let index = siblings.length - 1;
-    while (sibling && sibling.type === 'msubsup') {
+    while (sibling && /msubsup|placeholder/.test(sibling.type)) {
         index -= 1;
@@ -685,3 +791,3 @@ sibling = siblings[index];
 
-    if (typeof shortcut === 'object') {
+    if (typeof shortcut.after !== 'undefined') {
         // If this is a conditional shortcut, consider the conditions now
@@ -702,9 +808,8 @@ if (    (/nothing/.test(shortcut.after) && nothing) ||
                 (/space/.test(shortcut.after) && space)){
-            shortcut = shortcut.value;
-        } else {
-            shortcut = null;
+            return shortcut.value;
         }
+        return null;
     }
 
-    return shortcut;
+    return shortcut.value;
 }
@@ -715,2 +820,3 @@
  * 
+ * @param {string} mode
  * @param {string} context - atoms preceding the candidate, potentially used
@@ -725,3 +831,3 @@ * to reduce which shortcuts are applicable. If 'null', no restrictions are
  */
-function forString(context, s, config) {
+function forString(mode, context, s, config) {
     let result = '';
@@ -731,3 +837,3 @@
     if (!skipDefaultShortcuts) {
-        result = validateShortcut(context, INLINE_SHORTCUTS[s]);
+        result = validateShortcut(mode, context, INLINE_SHORTCUTS[s]);
     }
@@ -739,3 +845,3 @@
     if (customInlineShortcuts) {
-        customResult = validateShortcut(context, customInlineShortcuts[s]);
+        customResult = validateShortcut(mode, context, customInlineShortcuts[s]);
     }
@@ -742,0 +848,0 @@

src/editor/editor-undo.js

@@ -156,2 +156,7 @@ /**
     restore(state, options) {
+        const wasSuppressing = this.mathlist.suppressChangeNotifications;
+        if (options.suppressChangeNotifications !== undefined) {
+            this.mathlist.suppressChangeNotifications = options.suppressChangeNotifications;
+        }
+        
         // Restore the content
@@ -165,4 +170,7 @@ this.mathlist.insert(state ? state.latex : '', {
         });
+
         // Restore the selection
         this.mathlist.setPath(state ? state.selection : [{relation: 'body', offset: 0}]);
+
+        this.mathlist.suppressChangeNotifications = wasSuppressing;
     }
@@ -169,0 +177,0 @@ }

src/editor/l10n.js

@@ -5,11 +5,4 @@
 export function l10n(s) {
-    // Use the browser defined language as the default language,
-    // "english" if not running in a browser (node.js)
-    if (!l10n._locale) {
-        // Use the setter, which will load the necessary .json files.
-        l10n.locale = typeof navigator === 'undefined' ? 'en' : 
-            navigator.language.slice(0, 5);
-    }
 
-    const language = l10n._locale.substring(0, 2);
+    const language = l10n.locale.substring(0, 2);
 
@@ -19,3 +12,3 @@ let result = '';
     // Attempt to find a match for the current locale
-    if (l10n.strings[l10n._locale]) result = l10n.strings[l10n._locale][s];
+    if (l10n.strings[l10n.locale]) result = l10n.strings[l10n.locale][s];
     // If none is found, attempt to find a match for the language
@@ -50,3 +43,3 @@ if (!result && l10n.strings[language]) result = l10n.strings[language][s];
         strings = locale;
-        for (const l of strings) {
+        for (const l in strings) {
             if (strings.hasOwnProperty(l)) {
@@ -66,2 +59,9 @@ l10n.merge(l, strings[l]);
     get() {
+        // Use the browser defined language as the default language,
+        // "english" if not running in a browser (node.js)
+        if (!l10n._locale) {
+            // Use the setter, which will load the necessary .json files.
+            l10n._locale = typeof navigator === 'undefined' ? 'en' : 
+                navigator.language.slice(0, 5);
+        }
         return l10n._locale
@@ -84,2 +84,13 @@ }
     },
+    "ar": {
+      "keyboard.tooltip.functions": "مهام",
+      "keyboard.tooltip.greek": "حروف يونانية",
+      "keyboard.tooltip.command": "حالة تلقي الأوامر اللاتك",
+      "keyboard.tooltip.numeric": "الرقمية",
+      "keyboard.tooltip.roman": "رموز الاحرف الرومانية",
+      "tooltip.copy to clipboard": "نسخ إلى الحافظة",
+      "tooltip.redo": "الإعادة",
+      "tooltip.toggle virtual keyboard": "تبديل لوحة المفاتيح الإفتراضية",
+      "tooltip.undo": "إلغاء"
+    },
     "de": {
@@ -94,3 +105,3 @@ "keyboard.tooltip.functions": "Funktionen",
         "tooltip.toggle virtual keyboard": "Virtuelle Tastatur umschalten",
-        "tooltip.undo": "Rückgängig machen"
+        "tooltip.undo": "Widerrufen"
     },
@@ -108,2 +119,13 @@ "es": {
     },
+    "fa": {
+      "keyboard.tooltip.functions": "توابع",
+      "keyboard.tooltip.greek": "حروف یونانی",
+      "keyboard.tooltip.command": "حالت دستور لاتک",
+      "keyboard.tooltip.numeric": "عددی",
+      "keyboard.tooltip.roman": "علائم و حروف لاتین",
+      "tooltip.copy to clipboard": "کپی به کلیپبورد",
+      "tooltip.redo": "بازگشت به بعد",
+      "tooltip.toggle virtual keyboard": "نمایش/نهفتن کیبورد مجازی",
+      "tooltip.undo": "بازگشت به قبل"
+    },
     "fr": {
@@ -115,4 +137,4 @@ "keyboard.tooltip.functions": "Fonctions",
         "keyboard.tooltip.roman": "Lettres et symboles romains",
-        "tooltip.copy to clipboard": "Copier dans le Presse-papiers",
-        "tooltip.redo": "Refaire",
+        "tooltip.copy to clipboard": "Copier dans le presse-papiers",
+        "tooltip.redo": "Rétablir",
         "tooltip.toggle virtual keyboard": "Afficher/Masquer le clavier virtuel",
@@ -119,0 +141,0 @@ "tooltip.undo": "Annuler"

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