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-rw-r--r--re.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/re.h b/re.h
index dc4cd173547..9d3b77f519a 100644
--- a/re.h
+++ b/re.h
@@ -36,4 +36,7 @@ VALUE rb_reg_regsub _((VALUE, VALUE, struct re_registers *));
int rb_kcode _((void));
extern int ruby_ignorecase;
+
+int rb_mbclen2 _((unsigned char, VALUE));
+#define mbclen2(c,re) rb_mbclen2((c),(re))
#endif