Added gettext (.po) language support (#3369)

Author: RunDevelopment

components.js

@@ -484,6 +484,11 @@
 			"title": "GEDCOM",
 			"owner": "Golmote"
 		},
+		"gettext": {
+			"title": "gettext",
+			"alias": "po",
+			"owner": "RunDevelopment"
+		},
 		"gherkin": {
 			"title": "Gherkin",
 			"owner": "hason"

components.json

@@ -0,0 +1,43 @@
+Prism.languages.gettext = {
+	'comment': [
+		{
+			pattern: /# .*/,
+			greedy: true,
+			alias: 'translator-comment'
+		},
+		{
+			pattern: /#\..*/,
+			greedy: true,
+			alias: 'extracted-comment'
+		},
+		{
+			pattern: /#:.*/,
+			greedy: true,
+			alias: 'reference-comment'
+		},
+		{
+			pattern: /#,.*/,
+			greedy: true,
+			alias: 'flag-comment'
+		},
+		{
+			pattern: /#\|.*/,
+			greedy: true,
+			alias: 'previously-untranslated-comment'
+		},
+		{
+			pattern: /#.*/,
+			greedy: true
+		},
+	],
+	'string': {
+		pattern: /(^|[^\\])"(?:[^"\\]|\\.)*"/,
+		lookbehind: true,
+		greedy: true
+	},
+	'keyword': /^msg(?:ctxt|id|id_plural|str)\b/m,
+	'number': /\b\d+\b/,
+	'punctuation': /[\[\]]/
+};
+
+Prism.languages.po = Prism.languages.gettext;

components/prism-gettext.js

@@ -0,0 +1,6 @@
+<h2>Full example</h2>
+<pre><code>#  Source: https://www.gnu.org/software/gettext/manual/html_node/PO-Files.html
+#: lib/error.c:116
+msgid "Unknown system error"
+msgstr "Error desconegut del sistema"
+</code></pre>

components/prism-gettext.min.js

@@ -197,6 +197,7 @@
 		"xlsx": "excel-formula",
 		"xls": "excel-formula",
 		"gamemakerlanguage": "gml",
+		"po": "gettext",
 		"gni": "gn",
 		"go-mod": "go-module",
 		"hbs": "handlebars",

examples/prism-gettext.html

@@ -97,6 +97,8 @@
 		"gcode": "G-code",
 		"gdscript": "GDScript",
 		"gedcom": "GEDCOM",
+		"gettext": "gettext",
+		"po": "gettext",
 		"glsl": "GLSL",
 		"gn": "GN",
 		"gni": "GN",