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From: Peng Yu <pengyu.ut@gmail.com>
Date: Sun, 2 Dec 2018 16:28:29 -0600
Message-ID: <CABrM6wkV7yi=5OrwW6JnFSuLMdX0xeryL0VF3fP5YpWGEXHvUA@mail.gmail.com>
Subject: How to yield an error with zparseopts when non-matching options are seen?
To: zsh-users <zsh-users@zsh.org>
Content-Type: text/plain; charset="UTF-8"

In the following example, -b has not been defined as an option, but
`zparseopts` return successfully. Is there a way to let it yield an
error when it sees such a case?

$  ./main.sh
set -- -b -a x -a y
zparseopts -D a:=bar
echo $?
0
declare -p bar
typeset -a bar=(  )
declare -p argv
typeset -a argv=( -b -a x -a y )

set -- -b -a x -a y
zparseopts -D -E a:=bar
declare -p bar
typeset -a bar=( -a y )
declare -p argv
typeset -a argv=( -b )
$ cat ./main.sh
#!/usr/bin/env zsh
# vim: set noexpandtab tabstop=2:

set -v
set -- -b -a x -a y
zparseopts -D a:=bar
echo $?
declare -p bar
declare -p argv

set -- -b -a x -a y
zparseopts -D -E a:=bar
declare -p bar
declare -p argv

-- 
Regards,
Peng