Rust: Fixed Unicode char literals (#2550)

Author: RunDevelopment

components/prism-rust.js

@@ -26,7 +26,7 @@
 			greedy: true
 		},
 		'char': {
-			pattern: /b?'(?:\\(?:x[0-7][\da-fA-F]|u{(?:[\da-fA-F]_*){1,6}|.)|[^\\\r\n\t'])'/,
+			pattern: /b?'(?:\\(?:x[0-7][\da-fA-F]|u\{(?:[\da-fA-F]_*){1,6}\}|.)|[^\\\r\n\t'])'/,
 			greedy: true,
 			alias: 'string'
 		},

components/prism-rust.min.js

@@ -1,13 +1,21 @@
 'a'
 'स'
+'\''
+'\n'
+'\u{00e9}'
+'\x41'
 
 ----------------------------------------------------
 
 [
 	["char", "'a'"],
-	["char", "'स'"]
+	["char", "'स'"],
+	["char", "'\\''"],
+	["char", "'\\n'"],
+	["char", "'\\u{00e9}'"],
+	["char", "'\\x41'"]
 ]
 
 ----------------------------------------------------
 
-Checks for chars.
+Checks for chars.