diff options
| author | Brian Fraser <fraserbn@gmail.com> | 2012-01-12 17:22:05 -0300 |
|---|---|---|
| committer | Karl Williamson <public@khwilliamson.com> | 2012-01-29 10:07:40 -0700 |
| commit | 838f2281125c4e0f98e5d741f9058f09c8242d33 (patch) | |
| tree | 6fa3458446be72105180d95d66cf87a1d3b7cf3b /regen/keywords.pl | |
| parent | 2a4315f8fb099a3fd3bbd5d9994af3919a6c5b05 (diff) | |
| download | perl-838f2281125c4e0f98e5d741f9058f09c8242d33.tar.gz | |
Implement the fc keyword and the \F string escape.
Along with the simple_casefolding and full_casefolding features.
fc() stands for foldcase, a sort of pseudo case (like lowercase),
which is used to implement Unicode casefolding. It maps a string
to a form where all case differences are erased, so it's a
locale-independent way of checking if two strings are the same,
regardless of case.
This functionality was, and still is, available through the
regular expression engine -- /i matches would use casefolding
internally. The fc keyword merely exposes this for easier access.
Previously, one could attempt to case-insensitively test two strings
for equality by doing
lc($a) eq lc($b)
But that might get you wrong results, for example in the case of
\x{DF}, LATIN SMALL LETTER SHARP S.
Diffstat (limited to 'regen/keywords.pl')
| -rwxr-xr-x | regen/keywords.pl | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/regen/keywords.pl b/regen/keywords.pl index 3e0b0d36f0..b783d08f77 100755 --- a/regen/keywords.pl +++ b/regen/keywords.pl @@ -49,6 +49,8 @@ my %feature_kw = ( evalbytes=>'evalbytes', __SUB__ => '__SUB__', + + fc => 'fc', ); my %pos = map { ($_ => 1) } @{$by_strength{'+'}}; @@ -176,6 +178,7 @@ __END__ +exists -exit -exp +-fc -fcntl -fileno -flock |