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getopts does not follow SUS
- X-seq: zsh-workers 21697
- From: DervishD <zsh@xxxxxxxxxxxx>
- To: Zsh Workers <zsh-workers@xxxxxxxxxx>
- Subject: getopts does not follow SUS
- Date: Sat, 3 Sep 2005 13:17:34 +0200
- Mail-followup-to: Zsh Workers <zsh-workers@xxxxxxxxxx>
- Mailing-list: contact zsh-workers-help@xxxxxxxxxx; run by ezmlm
- Organization: DervishD
Hi all :)
SUS require that getopts is 'reset' if OPTIND is assigned the
value 1, so the following is expected:
$ getopts "-" option --ta
$ echo -- $option
-
$ OPTIND=1
$ getopts "-" option --ta
$ echo -- $option
-
But zsh doesn't do that:
$ getopts "-" option --ta
$ echo -- $option
-
$ OPTIND=1
$ getopts "-" option --ta
zsh: bad option -t
$ echo -- $option
?
But if we assign 0 to OPTIND under zsh:
$ getopts "-" option --ta
$ echo -- $option
-
$ OPTIND=0
$ getopts "-" option --ta
$ echo -- $option
-
The same in bash (whose getopts *does* follow SUS):
$ getopts "-" option --ta
$ echo -- $option
-
$ OPTIND=1
$ getopts "-" option --ta
$ echo -- $option
-
The relevant section in SUS is:
SUS->Shell & Utilities->Utilities->getopts
I don't have a copy of POSIX, so I don't know if the same applies
in POSIX :?
Unfortunately, fixing this will probably break any script that
already uses OPTIND to 'reset' getopts and assigns a value of 0,
unless '0' is kept as a back-compatibility value (SUS says that any
value other than 1 is unspecified, so...
I've tested under version 4.2.5, Linux, PC (i686). If any other
data is needed (or tests, or whatever) just tell.
Thanks in advance :)
Raúl Núñez de Arenas Coronado
--
Linux Registered User 88736 | http://www.dervishd.net
http://www.pleyades.net & http://www.gotesdelluna.net
It's my PC and I'll cry if I want to...
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