Fix html derivative grammar consuming php code, fixes microsoft#237262 (microsoft#245076)

Co-authored-by: Alex Ross <[email protected]>

Author: KapitanOczywisty

extensions/html/build/update-grammar.mjs

@@ -32,6 +32,22 @@ function patchGrammar(grammar) {
 		console.warn(`Expected to patch 2 occurrences of source.js & source.css: Was ${patchCount}`);
 	}
 
+	return grammar;
+}
+
+function patchGrammarDerivative(grammar) {
+	let patchCount = 0;
+
+	let patterns = grammar.patterns;
+	for (let key in patterns) {
+		if (patterns[key]?.name === 'meta.tag.other.unrecognized.html.derivative' && patterns[key]?.begin === '(</?)(\\w[^\\s>]*)(?<!/)') {
+			patterns[key].begin = '(</?)(\\w[^\\s<>]*)(?<!/)';
+			patchCount++;
+		}
+	}
+	if (patchCount !== 1) {
+		console.warn(`Expected to do 1 patch: Was ${patchCount}`);
+	}
 
 	return grammar;
 }
@@ -40,4 +56,6 @@ const tsGrammarRepo = 'textmate/html.tmbundle';
 const grammarPath = 'Syntaxes/HTML.plist';
 vscodeGrammarUpdater.update(tsGrammarRepo, grammarPath, './syntaxes/html.tmLanguage.json', grammar => patchGrammar(grammar));
 
+const grammarDerivativePath = 'Syntaxes/HTML%20%28Derivative%29.tmLanguage';
+vscodeGrammarUpdater.update(tsGrammarRepo, grammarDerivativePath, './syntaxes/html-derivative.tmLanguage.json', grammar => patchGrammarDerivative(grammar));
 

extensions/html/syntaxes/html-derivative.tmLanguage.json

@@ -23,7 +23,7 @@
 			"include": "text.html.basic#core-minus-invalid"
 		},
 		{
-			"begin": "(</?)(\\w[^\\s>]*)(?<!/)",
+			"begin": "(</?)(\\w[^\\s<>]*)(?<!/)",
 			"beginCaptures": {
 				"1": {
 					"name": "punctuation.definition.tag.begin.html"