From 90228f9a86df1c312f3af121235195f4f9ece79a Mon Sep 17 00:00:00 2001
From: naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 29 May 2016 13:58:45 +0000
Subject: * regexec.c (ONIGENC_IS_MBC_ASCII_WORD): redefine optimized one.  
 WORD of Ruby's ascii compatible encoding is always [a-zA-Z0-9_].

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55203 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 regexec.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'regexec.c')

diff --git a/regexec.c b/regexec.c
index a70fbdef91..480017ae54 100644
--- a/regexec.c
+++ b/regexec.c
@@ -40,6 +40,18 @@
 # endif
 #endif
 
+#define ENC_DUMMY_FLAG (1<<24)
+static inline int
+rb_enc_asciicompat(OnigEncoding enc)
+{
+    return ONIGENC_MBC_MINLEN(enc)==1 && !((enc)->ruby_encoding_index & ENC_DUMMY_FLAG);
+}
+#undef ONIGENC_IS_MBC_ASCII_WORD
+#define ONIGENC_IS_MBC_ASCII_WORD(enc,s,end) \
+    (rb_enc_asciicompat(enc) ? (ISALNUM(*s) || *s=='_') : \
+   onigenc_ascii_is_code_ctype( \
+	ONIGENC_MBC_TO_CODE(enc,s,end),ONIGENC_CTYPE_WORD,enc))
+
 #ifdef USE_CRNL_AS_LINE_TERMINATOR
 #define ONIGENC_IS_MBC_CRNL(enc,p,end) \
   (ONIGENC_MBC_TO_CODE(enc,p,end) == 13 && \
-- 
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