Added some standard C regex implementation. (0.20.0)

lib/regex.fun

@@ -0,0 +1,33 @@
+/*
+ * This file is part of the Fun programming language.
+ * https://hanez.org/project/fun/
+ *
+ * Copyright 2025 Johannes Findeisen <you@hanez.org>
+ * Licensed under the terms of the Apache-2.0 license.
+ * https://opensource.org/license/apache-2-0
+ *
+ * Added: 2025-10-04
+ */
+
+// Regex stdlib abstraction over VM regex opcodes.
+// Provides simple methods and sensible defaults.
+
+/*
+Methods:
+- match(text, pattern) -> 1/0 (full match)
+- search(text, pattern) -> map {"match": str, "start": int, "end": int, "groups": array}
+- replace(text, pattern, repl) -> string (global)
+*/
+
+class Regex()
+  // Full match: returns 1 if the whole string matches the pattern
+  fun match(this, text, pattern)
+    return regex_match(to_string(text), to_string(pattern))
+
+  // First match with groups as array
+  fun search(this, text, pattern)
+    return regex_search(to_string(text), to_string(pattern))
+
+  // Global replace; replacement is literal (no backrefs)
+  fun replace(this, text, pattern, repl)
+    return regex_replace(to_string(text), to_string(pattern), to_string(repl))