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-rw-r--r--include/ruby/encoding.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/include/ruby/encoding.h b/include/ruby/encoding.h
index 45f5201d44..059f4b02bf 100644
--- a/include/ruby/encoding.h
+++ b/include/ruby/encoding.h
@@ -129,9 +129,9 @@ int rb_enc_codelen(int code, rb_encoding *enc);
/* code,ptr,encoding -> write buf */
#define rb_enc_mbcput(c,buf,enc) ONIGENC_CODE_TO_MBC(enc,c,(UChar*)(buf))
-/* ptr, ptr, encoding -> prev_char */
-#define rb_enc_prev_char(s,p,enc) (char *)onigenc_get_prev_char_head(enc,(UChar*)(s),(UChar*)(p))
-/* ptr, ptr, encoding -> next_char */
+/* start, ptr, end, encoding -> prev_char */
+#define rb_enc_prev_char(s,p,e,enc) (char *)onigenc_get_prev_char_head(enc,(UChar*)(s),(UChar*)(p),(UChar*)(e))
+/* start, ptr, end, encoding -> next_char */
#define rb_enc_left_char_head(s,p,enc) (char *)onigenc_get_left_adjust_char_head(enc,(UChar*)(s),(UChar*)(p))
#define rb_enc_right_char_head(s,p,e,enc) (char *)onigenc_get_right_adjust_char_head(enc,(UChar*)(s),(UChar*)(p),(UChar*)(e))