On Thu, Jul 19, 2007 at 01:59:38PM +0200, Cristian Ionescu-Idbohrn wrote:
> Consider running the attached script. You will notice it fails on
> test 2 and 4. Both bash and busybox-ash main trunk pass all tests.
> zsh 4.3.2-25 fails test 8.
Hi Cristian,
test 2: FOO2="${FOO%%[^0-9A-Za-z]*}"
test 4: FOO4="${FOO%%[^[:alnum:]]*}"
please see:
http://www.opengroup.org/onlinepubs/009695399/utilities/xcu_chap02.html#tag_02_13
The description of basic regular expression bracket expressions in the
Base Definitions volume of IEEE Std 1003.1-2001, Section 9.3.5, RE
Bracket Expression shall also apply to the pattern bracket expression,
except that the exclamation mark character ( '!' ) shall replace the
circumflex character ( '^' ) in its role in a "non-matching list" in
the regular expression notation. A bracket expression starting with an
unquoted circumflex character produces unspecified results.
So it looks like this isn't a bug, but the patterns you use can produce
'unspecified results'.
Regards, Gerrit.
--
To UNSUBSCRIBE, email to [EMAIL PROTECTED]
with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
