public inbox for glibc-bugs-regex@sourceware.org
help / color / mirror / Atom feed
* [Bug regex/11561] New: Collation characters represented by internal name instead of character sequence
@ 2010-04-30 7:36 bonzini at gnu dot org
0 siblings, 0 replies; only message in thread
From: bonzini at gnu dot org @ 2010-04-30 7:36 UTC (permalink / raw)
To: glibc-bugs-regex
In the glibc locale definitions, collating elements have a hyphenated name:
collating-symbol <zs>
collating-element <z-s> from "<U007A><U0073>"
and the hyphenated name have to be used in regular expression for [[. .]] to
work properly:
$ echo '*ch*' | LC_COLLATE=cs_CZ.UTF-8 sed 's/[[.c-h.]]//'
**
$ echo 'ch' | LC_COLLATE=cs_CZ.UTF-8 sed 's/[[.ch.]]//'
sed: -e expression #1, char 12: Invalid collation character
However, POSIX 1.2008 says:
A collating symbol is a collating element enclosed within
bracket-period ( "[." and ".]" ) delimiters. Collating
elements are defined as described in Collation Order .
Conforming applications shall represent multi-character
collating elements as collating symbols when it is
necessary to distinguish them from a list of the
individual characters that make up the multi-character
collating element. For example, if the string "ch" is a
collating element defined using the line:
collating-element <ch-digraph> from "<c><h>"
in the locale definition, the expression "[[.ch.]]" shall
be treated as an RE containing the collating symbol 'ch',
while "[ch]" shall be treated as an RE matching 'c' or
'h' . Collating symbols are recognized only inside
bracket expressions. If the string is not a collating
element in the current locale, the expression is invalid.
POSIX especially mentions [[.ch.]] in the example instead of [[.ch-digraph.]] so
this is a bug in glibc. It shouldn't be hard to fix it in regcomp.
--
Summary: Collation characters represented by internal name
instead of character sequence
Product: glibc
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: regex
AssignedTo: bonzini at gnu dot org
ReportedBy: bonzini at gnu dot org
CC: glibc-bugs-regex at sources dot redhat dot com,glibc-
bugs at sources dot redhat dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=11561
------- You are receiving this mail because: -------
You are on the CC list for the bug, or are watching someone who is.
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2010-04-30 7:36 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2010-04-30 7:36 [Bug regex/11561] New: Collation characters represented by internal name instead of character sequence bonzini at gnu dot org
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).