Added support for go.mod files (#3209)

Author: RunDevelopment

Diff for: components.js

@@ -495,6 +495,11 @@
 			"require": "clike",
 			"owner": "arnehormann"
 		},
+		"go-module": {
+			"title": "Go module",
+			"alias": "go-mod",
+			"owner": "RunDevelopment"
+		},
 		"graphql": {
 			"title": "GraphQL",
 			"optional": "markdown",

Diff for: components.json

@@ -0,0 +1,24 @@
+// https://go.dev/ref/mod#go-mod-file-module
+
+Prism.languages['go-mod'] = Prism.languages['go-module'] = {
+	'comment': {
+		pattern: /\/\/.*/,
+		greedy: true
+	},
+	'version': {
+		pattern: /(^|[\s()[\],])v\d+\.\d+\.\d+(?:[+-][-+.\w]*)?(?![^\s()[\],])/,
+		lookbehind: true,
+		alias: 'number'
+	},
+	'go-version': {
+		pattern: /((?:^|\s)go\s+)\d+(?:\.\d+){1,2}/,
+		lookbehind: true,
+		alias: 'number'
+	},
+	'keyword': {
+		pattern: /^([ \t]*)(?:exclude|go|module|replace|require|retract)\b/m,
+		lookbehind: true
+	},
+	'operator': /=>/,
+	'punctuation': /[()[\],]/
+};

Diff for: components/prism-go-module.js

@@ -0,0 +1,15 @@
+<h2>Full example</h2>
+<pre><code>// Source: https://go.dev/doc/modules/gomod-ref#example
+
+module example.com/mymodule
+
+go 1.14
+
+require (
+    example.com/othermodule v1.2.3
+    example.com/thismodule v1.2.3
+    example.com/thatmodule v1.2.3
+)
+
+replace example.com/thatmodule => ../thatmodule
+exclude example.com/thismodule v1.3.0</code></pre>

Diff for: components/prism-go-module.min.js

@@ -197,6 +197,7 @@
 		"xls": "excel-formula",
 		"gamemakerlanguage": "gml",
 		"gni": "gn",
+		"go-mod": "go-module",
 		"hbs": "handlebars",
 		"hs": "haskell",
 		"idr": "idris",

Diff for: examples/prism-go-module.html

@@ -98,6 +98,8 @@
 		"glsl": "GLSL",
 		"gn": "GN",
 		"gni": "GN",
+		"go-module": "Go module",
+		"go-mod": "Go module",
 		"graphql": "GraphQL",
 		"hbs": "Handlebars",
 		"hs": "Haskell",