Diff: Added prefix token (#2281)

This adds a token to match line prefixes.
PrismJS · Apr 4, 2020 · fd432a5 · fd432a5
1 parent 8167005
commit fd432a5
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Showing 3 changed files with 19 additions and 9 deletions.
diff --git a/components/prism-diff.js b/components/prism-diff.js
@@ -40,10 +40,20 @@
 		}
 
 		Prism.languages.diff[name] = {
-			// pattern: /^(?:[_].*(?:\r\n?|\n|(?![\s\S])))+/m
 			pattern: RegExp('^(?:[' + prefix + '].*(?:\r\n?|\n|(?![\\s\\S])))+', 'm'),
-			alias: alias
+			alias: alias,
+			inside: {
+				'line': {
+					pattern: /(.)(?=[\s\S]).*(?:\r\n?|\n)?/,
+					lookbehind: true
+				},
+				'prefix': {
+					pattern: /[\s\S]/,
+					alias: /\w+/.exec(name)[0]
+				}
+			}
 		};
+
 	});
 
 	// make prefixes available to Diff plugin

diff --git a/components/prism-diff.min.js b/components/prism-diff.min.js
diff --git a/tests/languages/diff/diff_feature.test b/tests/languages/diff/diff_feature.test
@@ -11,12 +11,12 @@
 ----------------------------------------------------
 
 [
-	["diff", "!     qt: core\r\n"],
-	["unchanged", "  unchanged\r\n"],
-	["deleted-sign", "-    qt: core\r\n"],
-	["inserted-sign", "+    qt: core gui\r\n"],
-	["deleted-arrow", "< qt: core\r\n"],
-	["inserted-arrow", "> qt: core quick"]
+	["diff", [["prefix", "!"], ["line", "     qt: core\r\n"]]],
+	["unchanged", [["prefix", " "], ["line", " unchanged\r\n"]]],
+	["deleted-sign", [["prefix", "-"], ["line", "    qt: core\r\n"]]],
+	["inserted-sign", [["prefix", "+"], ["line", "    qt: core gui\r\n"]]],
+	["deleted-arrow", [["prefix", "<"], ["line", " qt: core\r\n"]]],
+	["inserted-arrow", [["prefix", ">"], ["line", " qt: core quick"]]]
 ]
 
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