Added support for $$ equations (#1916)

PrismJS · Jun 12, 2019 · 6f53f74 · 6f53f74
2 parents 3e18124 + c33cf45
commit 6f53f74
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Showing 3 changed files with 15 additions and 4 deletions.
diff --git a/components/prism-latex.js b/components/prism-latex.js
@@ -15,12 +15,12 @@
 			lookbehind: true
 		},
 		/*
-		 * equations can be between $ $ or \( \) or \[ \]
+		 * equations can be between $$ $$ or $ $ or \( \) or \[ \]
 		 * (all are multiline)
 		 */
 		'equation': [
 			{
-				pattern: /\$(?:\\[\s\S]|[^\\$])*\$|\\\([\s\S]*?\\\)|\\\[[\s\S]*?\\\]/,
+				pattern: /\$\$(?:\\[\s\S]|[^\\$])+\$\$|\$(?:\\[\s\S]|[^\\$])+\$|\\\([\s\S]*?\\\)|\\\[[\s\S]*?\\\]/,
 				inside: insideEqu,
 				alias: 'string'
 			},

diff --git a/components/prism-latex.min.js b/components/prism-latex.min.js
diff --git a/tests/languages/latex/equation_feature.test b/tests/languages/latex/equation_feature.test
@@ -1,6 +1,9 @@
 $foo$
 $a \dots
 b$
+$$foo$$
+$$a \dots
+b$$
 \(foo\)
 \(a \dots
 b\)
@@ -36,6 +39,14 @@ b\end{gather}
 		["equation-command", "\\dots"],
 		"\r\nb$"
 	]],
+	["equation", [
+		"$$foo$$"
+	]],
+	["equation", [
+		"$$a ",
+		["equation-command", "\\dots"],
+		"\r\nb$$"
+	]],
 	["equation", ["\\(foo\\)"]],
 	["equation", [
 		"\\(a ",
@@ -118,4 +129,4 @@ b\end{gather}
 
 ----------------------------------------------------
 
-Checks for equations.
+Checks for equations.