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| author | David Mitchell <davem@iabyn.com> | 2014-03-26 12:07:39 +0000 |
|---|---|---|
| committer | David Mitchell <davem@iabyn.com> | 2014-03-26 12:07:39 +0000 |
| commit | 37ea023e4dd4082193ed4d0b88f61693ce4eb5b1 (patch) | |
| tree | 29b18eb6400513540bd978f933b81be111be166b /pod/perlrebackslash.pod | |
| parent | e14119056960dbe28537c9870667b5b920d9d731 (diff) | |
| download | perl-37ea023e4dd4082193ed4d0b88f61693ce4eb5b1.tar.gz | |
Deprecate /\C/
For 5.20, just say its deprecated. We'll add a warning in 5.22
and change its behaviour in 5.24.
Diffstat (limited to 'pod/perlrebackslash.pod')
| -rw-r--r-- | pod/perlrebackslash.pod | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/pod/perlrebackslash.pod b/pod/perlrebackslash.pod index b7eb4fd6b8..5d458b5bdc 100644 --- a/pod/perlrebackslash.pod +++ b/pod/perlrebackslash.pod @@ -69,7 +69,7 @@ as C<Not in [].> \b Word/non-word boundary. (Backspace in []). \B Not a word/non-word boundary. Not in []. \cX Control-X. - \C Single octet, even under UTF-8. Not in []. + \C Single octet, even under UTF-8. Not in []. (Deprecated) \d Character class for digits. \D Character class for non-digits. \e Escape character. @@ -575,11 +575,14 @@ categories above. These are: =item \C -C<\C> always matches a single octet, even if the source string is encoded +(Deprecated.) C<\C> always matches a single octet, even if the source +string is encoded in UTF-8 format, and the character to be matched is a multi-octet character. This is very dangerous, because it violates the logical character abstraction and can cause UTF-8 sequences to become malformed. +Use C<utf8::encode()> instead. + Mnemonic: oI<C>tet. =item \K @@ -652,9 +655,6 @@ Mnemonic: eI<X>tended Unicode character. =head4 Examples - "\x{256}" =~ /^\C\C$/; # Match as chr (0x256) takes - # 2 octets in UTF-8. - $str =~ s/foo\Kbar/baz/g; # Change any 'bar' following a 'foo' to 'baz' $str =~ s/(.)\K\g1//g; # Delete duplicated characters. |