Go: improved operator regexp + removed punctuation from it

components/prism-go.js

@@ -2,7 +2,7 @@ Prism.languages.go = Prism.languages.extend('clike', {
 	'keyword': /\b(break|case|chan|const|continue|default|defer|else|fallthrough|for|func|go(to)?|if|import|interface|map|package|range|return|select|struct|switch|type|var)\b/,
 	'builtin': /\b(bool|byte|complex(64|128)|error|float(32|64)|rune|string|u?int(8|16|32|64|)|uintptr|append|cap|close|complex|copy|delete|imag|len|make|new|panic|print(ln)?|real|recover)\b/,
 	'boolean': /\b(_|iota|nil|true|false)\b/,
-	'operator': /([(){}\[\]]|[*\/%^!]=?|\+[=+]?|-[>=-]?|\|[=|]?|>[=>]?|<(<|[=-])?|==?|&(&|=|^=?)?|\.(\.\.)?|[,;]|:=?)/,
+	'operator': /[*\/%^!=]=?|\+[=+]?|-[=-]?|\|[=|]?|&(?:=|&|\^=?)?|>(?:>=?|=)?|<(?:<=?|=|-)?|:=|\.\.\./,
 	'number': /\b(-?(0x[a-f\d]+|(\d+\.?\d*|\.\d+)(e[-+]?\d+)?)i?)\b/i,
 	'string': /("|'|`)(\\?.|\r|\n)*?\1/
 });