From: Daniel Shahaf <d.s@daniel.shahaf.name>
To: dana <dana@dana.is>
Cc: Zsh hackers list <zsh-workers@zsh.org>, franciscodezuviria@gmail.com
Subject: Re: [BUG] getopts OPTIND - yash's behaviour
Date: Wed, 14 Apr 2021 13:04:27 +0000 [thread overview]
Message-ID: <20210414130427.GE3882@tarpaulin.shahaf.local2> (raw)
In-Reply-To: <C8AAF10F-8FF7-47D6-8760-5960D62E91F7@dana.is>
dana wrote on Tue, Apr 13, 2021 at 18:28:50 -0500:
> + # This function is written so it can be easily referenced against other shells
> + t() {
> + local o i=0 n=$1
> + shift
> + while [ $i -lt $n ]; do
> + i=$(( i + 1 ))
> + getopts a: o "$@" 2> /dev/null
> + done
> + printf '<%d>' "$OPTIND"
> + }
> + # Try all these the native way, then the POSIX_BUILTINS way
> + for 1 in no_posix_builtins posix_builtins; do (
> + setopt $1
> + print -rn - "$1: "
> + <3> t 1 -a
I'm guessing yash notices that -a (at index 1) takes an argument, so it
goes to the top of the loop for the word at index 2, where it increments
OPTIND before noticing that index 2 is actually past the end of the
array.
> + <3> t 1 -w
I get "1:2" in yash 2.51 interactively.
> + <3> t 2 -a -w
Consistent with other shells.
> + <7> t 4 -a -w -e -r -a
- The first word is the -a option.
- The second word is the argument to the -a option.
- The third word is -w, so this call will return an error. Before
returning, since the next word to parse is the fourth one, set OPTIND
to 4.
> + <7> t 5 -a -w -e -a -w -e
Consistent with other shells.
> + <7> t 5 -a -w -e -r -ax -a
Consistent with other shells.
> + print
> + ); done
> +0:OPTIND calculation with and without POSIX_BUILTINS (workers/42248)
> +>no_posix_builtins: <1><1><3><5><7><6>
> +>posix_builtins: <2><2><3><6><7><7>
>
>
next prev parent reply other threads:[~2021-04-14 13:04 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-09 16:22 [BUG] getopts OPTIND Francisco de Zuviría Allende
2018-01-09 22:48 ` dana
2018-01-09 22:57 ` Bart Schaefer
2018-01-09 23:58 ` dana
2018-01-10 1:32 ` Francisco de Zuviría Allende
2018-01-10 9:05 ` Peter Stephenson
2021-04-13 23:28 ` dana
2021-04-14 13:04 ` Daniel Shahaf [this message]
2021-04-14 13:08 ` Daniel Shahaf
2021-04-18 5:16 ` dana
2021-04-20 21:31 ` Daniel Shahaf
2021-05-03 23:38 ` dana
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