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-rw-r--r--include/ruby/ruby.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/ruby/ruby.h b/include/ruby/ruby.h
index c5184f7ca6..199098f609 100644
--- a/include/ruby/ruby.h
+++ b/include/ruby/ruby.h
@@ -968,6 +968,7 @@ int rb_remove_event_hook(rb_event_hook_func_t func);
} /* extern "C" { */
#endif
+/* locale insensitive functions */
#include "encoding.h"
#ifndef ISPRINT
#define ISASCII(c) rb_isascii((int)(unsigned char)(c))