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| -rw-r--r-- | pod/perlre.pod | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/pod/perlre.pod b/pod/perlre.pod index c675186703..b6a73c0ab6 100644 --- a/pod/perlre.pod +++ b/pod/perlre.pod @@ -2154,6 +2154,10 @@ Subroutine call to a named capture buffer. Equivalent to C<< (?&NAME) >>. =head1 BUGS +There are numerous problems with case insensitive matching of characters +outside the ASCII range, especially with those whose folds are multiple +characters, such as ligatures like C<LATIN SMALL LIGATURE FF>. + In a bracketed character class with case insensitive matching, ranges only work for ASCII characters. For example, C<m/[\N{CYRILLIC CAPITAL LETTER A}-\N{CYRILLIC CAPITAL LETTER YA}]/i> |