Elixir: Added support for attributes names ending with ? (#2182)

Author: RunDevelopment

components/prism-elixir.js

@@ -37,7 +37,7 @@ Prism.languages.elixir = {
 		alias: 'symbol'
 	},
 	// Look-ahead prevents bad highlighting of the :: operator
-	'attr-name': /\w+:(?!:)/,
+	'attr-name': /\w+\??:(?!:)/,
 	'capture': {
 		// Look-behind prevents bad highlighting of the && operator
 		pattern: /(^|[^&])&(?:[^&\s\d()][^\s()]*|(?=\())/,

components/prism-elixir.min.js

@@ -1,7 +1,8 @@
 [a: 1, b: 2]
 do: :this, else: :that
 where: foo,
-select: bar
+select: bar,
+attr?: a
 
 ----------------------------------------------------
 
@@ -16,9 +17,10 @@ select: bar
 	["punctuation", ","],
 	["attr-name", "else:"], ["atom", ":that"],
 	["attr-name", "where:"], " foo", ["punctuation", ","],
-	["attr-name", "select:"], " bar"
+	["attr-name", "select:"], " bar", ["punctuation", ","],
+	["attr-name", "attr?:"], " a"
 ]
 
 ----------------------------------------------------
 
-Checks for keyword list keys.
+Checks for keyword list keys.