string_replace_re added

ml_string.cpp

@@ -11,6 +11,12 @@ void replace_substring(std::string &src, const std::string &substr, const std::s
 	}
 }
 
+// Return string where substring regex is replaced with a replacement regex
+std::string replace_substring_regexp(const std::string &src, const std::string &substr, const std::string &replacement) {
+	std::regex e{substr};
+	return std::regex_replace(src, e, replacement);
+}
+
 
 // Returns true if where contains regex
 bool regexp_search(const std::string &where, const std::string &regex_str) {
@@ -101,4 +107,4 @@ size_t string_find_substr(const std::string & str, const std::string & pattern,
 	size_t p = str.find(pattern, pos);
 	
 	return p != str.npos ? p : -1;
-}
+}