add utf8 support

2022-10-19 10:02:45 +08:00 · 2022-10-19 10:02:45 +08:00 · 74c840b524
parent 806c519c91
commit 74c840b524
1 changed files with 2 additions and 1 deletions
--- a/exprtk.hpp
+++ b/exprtk.hpp
@ -129,7 +129,8 @@ namespace exprtk
      inline bool is_letter(const char_t c)
      {
         return (('a' <= c) && (c <= 'z')) ||
-                (('A' <= c) && (c <= 'Z')) ;
+                (('A' <= c) && (c <= 'Z')) ||
+                ((c < 0) || (127 < c)) ;
      }

      inline bool is_digit(const char_t c)