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| author | Karl Williamson <public@khwilliamson.com> | 2011-10-13 19:56:45 -0600 |
|---|---|---|
| committer | Karl Williamson <public@khwilliamson.com> | 2012-03-22 22:14:24 -0600 |
| commit | 1118b943c2eac15b58b91de9ffbe015c923e4348 (patch) | |
| tree | 2be2931528bea44ee5eda6c55659e8c046c9c911 | |
| parent | 053ee270675e7fb9805977318b3bbdc9ce4c4ccd (diff) | |
| download | perl-1118b943c2eac15b58b91de9ffbe015c923e4348.tar.gz | |
regexec.c: Fix "\x{FB01}\x{FB00}" =~ /ff/i
Only the first character of the string was being checked when scanning
for the beginning position of the pattern match.
This was so wrong, it looks like it has to be a regression. I
experimented a little and did not find any. I believe (but am not
certain) that a multi-char fold has to be involved. The the handling of
these was so broken before 5.14 that there very well may not be a
regression.
| -rw-r--r-- | pod/perldelta.pod | 7 | ||||
| -rw-r--r-- | regexec.c | 3 | ||||
| -rw-r--r-- | t/re/re_tests | 6 |
3 files changed, 15 insertions, 1 deletions
diff --git a/pod/perldelta.pod b/pod/perldelta.pod index 1f1d4bd2bc..304f70a82f 100644 --- a/pod/perldelta.pod +++ b/pod/perldelta.pod @@ -315,6 +315,13 @@ pattern is in UTF-8, the target string is not, and a Latin-1 character precedes a character in the string that should match the pattern. [perl #101710] +=item * + +In case-insensitive regular expression pattern matching, no longer on +UTF-8 encoded strings does the scan for the start of match only look at +the first possible position. This caused matches such as +C<"f\x{FB00}" =~ /ff/i> to fail. + =back =head1 Known Problems @@ -1507,7 +1507,8 @@ S_find_byclass(pTHX_ regexp * prog, const regnode *c, char *s, ? utf8_length((U8 *) pat_string, (U8 *) pat_end) : ln; - e = HOP3c(strend, -((I32)lnc), s); + /* Set the end position to the final character available */ + e = HOP3c(strend, -1, s); if (!reginfo && e < s) { e = s; /* Due to minlen logic of intuit() */ diff --git a/t/re/re_tests b/t/re/re_tests index 35a72203cd..ae124522f8 100644 --- a/t/re/re_tests +++ b/t/re/re_tests @@ -1522,4 +1522,10 @@ abc\N{def - c - \\N{NAME} must be resolved by the lexer # See [perl #89750]. This makes sure that the simple fold gets generated # in that case, to DF. /[^\x{1E9E}]/i \x{DF} n - - + +/ff/i \x{FB00}\x{FB01} y $& \x{FB00} +/ff/i \x{FB01}\x{FB00} y $& \x{FB00} +/fi/i \x{FB01}\x{FB00} y $& \x{FB01} +/fi/i \x{FB00}\x{FB01} y $& \x{FB01} + # vim: softtabstop=0 noexpandtab |