Changes to lib/utf8.cpp. All files

lib/utf8.cpp

@@ -105,6 +105,7 @@ static const char *regex_range(char *buf, int a, int b, int esc, bool brackets =   return buf; } +/// Convert an 8-bit ASCII + Latin-1 Supplement range [a,b] to a regex pattern. std::string latin1(int a, int b, int esc, bool brackets) {   if (a < 0)@@ -115,13 +116,14 @@ std::string latin1(int a, int b, int esc, bool brackets)   return regex_range(buf, a, b, esc, brackets); } +/// Convert a UCS-4 range [a,b] to a UTF-8 regex pattern. std::string utf8(int a, int b, int esc, const char *par, bool strict) {   if (a < 0)     return ""; // undefined   if (a > b)     b = a;-  static const char *min_utf8_strict[6] = { // strict: exact UTF-8 validation+  static const char *min_utf8_strict[6] = { // strict: pattern is strict, matching only strictly valid UTF-8     "\x00",     "\xc2\x80",     "\xe0\xa0\x80",@@ -129,7 +131,7 @@ std::string utf8(int a, int b, int esc, const char *par, bool strict)     "\xf8\x88\x80\x80\x80",     "\xfc\x84\x80\x80\x80\x80"   };-  static const char *min_utf8_lean[6] = { // lean: permissive UTF-8 validation with more tightly compressed UTF-8+  static const char *min_utf8_lean[6] = { // lean: pattern is permissive, matching also some invalid UTF-8 but more tightly compressed UTF-8     "\x00",     "\xc2\x80",     "\xe0\x80\x80",