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Handle braces properly in text mode when looking for matching math delimiters. Resolves issue #1224

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This commit is contained in:
Davide P. Cervone 2015-07-30 09:25:25 -04:00
parent 24f0388bda
commit 7cbea14c75
1 changed files with 14 additions and 7 deletions
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21
unpacked/jax/input/TeX/jax.js
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@ -2020,31 +2020,38 @@
*/
InternalMath: function (text,level) {
var def = (this.stack.env.font ? {mathvariant: this.stack.env.font} : {});
var mml = [], i = 0, k = 0, c, match = '';
var mml = [], i = 0, k = 0, c, match = '', braces = 0;
if (text.match(/\\?[${}\\]|\\\(|\\(eq)?ref\s*\{/)) {
while (i < text.length) {
c = text.charAt(i++);
if (c === '$') {
if (match === '$') {
if (match === '$' && braces === 0) {
mml.push(MML.TeXAtom(TEX.Parse(text.slice(k,i-1),{}).mml().With(def)));
match = ''; k = i;
} else if (match === '') {
if (k < i-1) mml.push(this.InternalText(text.slice(k,i-1),def));
match = '$'; k = i;
}
} else if (c === '}' && match === '}') {
mml.push(MML.TeXAtom(TEX.Parse(text.slice(k,i),{}).mml().With(def)));
match = ''; k = i;
} else if (c === '{' && match !== '') {
braces++;
} else if (c === '}') {
if (match === '}' && braces === 0) {
mml.push(MML.TeXAtom(TEX.Parse(text.slice(k,i),{}).mml().With(def)));
match = ''; k = i;
} else if (match !== '') {
if (braces) braces--;
}
} else if (c === '\\') {
if (match === '' && text.substr(i).match(/^(eq)?ref\s*\{/)) {
var len = RegExp["$&"].length;
if (k < i-1) mml.push(this.InternalText(text.slice(k,i-1),def));
match = '}'; k = i-1;
match = '}'; k = i-1; i += len;
} else {
c = text.charAt(i++);
if (c === '(' && match === '') {
if (k < i-2) mml.push(this.InternalText(text.slice(k,i-2),def));
match = ')'; k = i;
} else if (c === ')' && match === ')') {
} else if (c === ')' && match === ')' && braces === 0) {
mml.push(MML.TeXAtom(TEX.Parse(text.slice(k,i-2),{}).mml().With(def)));
match = ''; k = i;
} else if (c.match(/[${}\\]/) && match === '') {