Commit c9ec813b6660e3ef9e58bafbc5dcca5a44c90a4a
2014-08-10T14:53:23
Extend Latex support This patch extends the support for Latex in the following way: * Support for various equation environments and for the verbatim environment * Certain functions like `\ref` or `\begin` always contain a reference or a keyword and they are highlighted as such. * Chapter and section headlines are written in bold to make them stand out more, because they structure the document. * Since `selector` and `string` have the same color in the default theme, the token type `function` is used to highlight Latex commands. * Add support for the `\url` command * Add alias support
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diff --git a/components/prism-latex.js b/components/prism-latex.js
index c8902f6..5e0a0e6 100644
--- a/components/prism-latex.js
+++ b/components/prism-latex.js
@@ -1,6 +1,61 @@
-Prism.languages.latex = {
- 'comment': /%.*?(\r?\n|$)$/m,
- 'string': /(\$)(\\?.)*?\1/g,
- 'punctuation': /[{}]/g,
- 'selector': /\\[a-z;,:\.]*/i
-}
\ No newline at end of file
+(function(Prism) {
+ var funcPattern = /\\([^a-z()[\]]|[a-z\*]+)/gi,
+ insideEqu = {
+ 'equation-command': {
+ pattern: funcPattern,
+ alias: 'regex'
+ }
+ };
+
+ Prism.languages.latex = {
+ 'comment': /%.*?$/gm,
+ // the verbatim environment prints whitespace to the document
+ 'cdata': {
+ pattern: /(\\begin\{((?:verbatim|lstlisting)\*?)\})([\w\W]*?)(?=\\end\{\2\})/,
+ lookbehind: true
+ },
+ /*
+ * equations can be between $ $ or \( \) or \[ \]
+ * (all are multiline)
+ */
+ 'equation': [
+ {
+ pattern: /(\$(\\?[\w\W])*?\$|\\\((\\?[\w\W])*?\\\)|\\\[(\\?[\w\W])*?\\\])/g,
+ inside: insideEqu,
+ alias: 'string'
+ },
+ {
+ pattern: /(\\begin\{((?:equation|math|eqnarray|align|multline|gather)\*?)\})([\w\W]*?)(?=\\end\{\2\})/,
+ lookbehind: true,
+ inside: insideEqu,
+ alias: 'string'
+ }
+ ],
+ /*
+ * arguments which are keywords or references are highlighted
+ * as keywords
+ */
+ 'keyword': {
+ pattern: /(\\(?:begin|end|ref|cite|label|usepackage|documentclass)(?:\[[^\]]+\])?\{)[^}]+(?=\}(?:\[[^\]]+\])?)/,
+ lookbehind: true
+ },
+ 'url': {
+ pattern: /(\\url\{)[^}]+(?=\})/,
+ lookbehind: true
+ },
+ /*
+ * section or chapter headlines are highlighted as bold so that
+ * they stand out more
+ */
+ 'headline': {
+ pattern: /(\\(?:part|chapter|section|subsection|frametitle|subsubsection|paragraph|subparagraph|subsubparagraph|subsubsubparagraph)\*?(?:\[[^\]]+\])?\{)[^}]+(?=\}(?:\[[^\]]+\])?)/,
+ lookbehind: true,
+ alias: 'class-name'
+ },
+ 'function': {
+ pattern: funcPattern,
+ alias: 'selector'
+ },
+ 'punctuation': /[[\]{}&]/g,
+ };
+})(Prism);
diff --git a/components/prism-latex.min.js b/components/prism-latex.min.js
index 29f9024..2699cd2 100644
--- a/components/prism-latex.min.js
+++ b/components/prism-latex.min.js
@@ -1 +1 @@
-Prism.languages.latex={comment:/%.*?(\r?\n|$)$/m,string:/(\$)(\\?.)*?\1/g,punctuation:/[{}]/g,selector:/\\[a-z;,:\.]*/i};
\ No newline at end of file
+!function(a){var e=/\\([^a-z()[\]]|[a-z\*]+)/gi,n={"equation-command":{pattern:e,alias:"regex"}};a.languages.latex={comment:/%.*?$/gm,cdata:{pattern:/(\\begin\{((?:verbatim|lstlisting)\*?)\})([\w\W]*?)(?=\\end\{\2\})/,lookbehind:!0},equation:[{pattern:/(\$(\\?[\w\W])*?\$|\\\((\\?[\w\W])*?\\\)|\\\[(\\?[\w\W])*?\\\])/g,inside:n,alias:"string"},{pattern:/(\\begin\{((?:equation|math|eqnarray|align|multline|gather)\*?)\})([\w\W]*?)(?=\\end\{\2\})/,lookbehind:!0,inside:n,alias:"string"}],keyword:{pattern:/(\\(?:begin|end|ref|cite|label|usepackage|documentclass)(?:\[[^\]]+\])?\{)[^}]+(?=\}(?:\[[^\]]+\])?)/,lookbehind:!0},url:{pattern:/(\\url\{)[^}]+(?=\})/,lookbehind:!0},headline:{pattern:/(\\(?:part|chapter|section|subsection|frametitle|subsubsection|paragraph|subparagraph|subsubparagraph|subsubsubparagraph)\*?(?:\[[^\]]+\])?\{)[^}]+(?=\}(?:\[[^\]]+\])?)/,lookbehind:!0,alias:"class-name"},"function":{pattern:e,alias:"selector"},punctuation:/[[\]{}&]/g}}(Prism);
\ No newline at end of file