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string.c: optimize enumerate_grapheme_clusters

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* string.c (rb_str_enumerate_grapheme_clusters): optimize when
  single byte only.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59762 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2017-09-06 12:50:10 +00:00
parent 1704e7a6a7
commit faa26f5570
1 changed files with 1 additions and 1 deletions
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2
string.c
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@ -8027,7 +8027,7 @@ rb_str_enumerate_grapheme_clusters(VALUE str, VALUE ary)
int unicode_p = rb_enc_unicode_p(enc);
const char *ptr, *end;
if (!unicode_p) {
if (!unicode_p || single_byte_optimizable(str)) {
return rb_str_enumerate_chars(str, ary);
}