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Regexp#fixed_encoding? documented.

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14160 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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akr 2007-12-09 11:57:06 +00:00
parent 7a7c26be73
commit 2d101f0a87
1 changed files with 25 additions and 0 deletions
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25
re.c
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@ -758,6 +758,31 @@ rb_match_busy(VALUE match)
FL_SET(match, MATCH_BUSY);
}
/*
* call-seq:
* rxp.fixed_encoding? => true or false
*
* Returns true if rxp is only applicable to
* a string encoded as rxp.encoding.
*
* r = /a/
* r.fixed_encoding? #=> false
* r =~ "\u{6666} a" #=> 2
* r =~ "\xa1\xa2 a".force_encoding("euc-jp") #=> 2
*
* r = /a/u
* r.fixed_encoding? #=> true
* r.encoding #=> <Encoding:UTF-8>
* r =~ "\u{6666} a" #=> 2
* r =~ "\xa1\xa2".force_encoding("euc-jp") # ArgumentError
*
* r = /\u{6666}/
* r.fixed_encoding? #=> true
* r.encoding #=> <Encoding:UTF-8>
* r =~ "\u{6666} a" #=> 0
* r =~ "\xa1\xa2".force_encoding("euc-jp") # ArgumentError
*/
static VALUE
rb_reg_fixed_encoding_p(VALUE re)
{