Re: BUG: git prompt breaks with zsh < 5.0.6

From: brian m. carlson <sandals@crustytoothpaste.net>
Date: Jan 9, 2023, 23:37 UTC
Message-ID: <Y7ylHW8nrsT1eVtW@tapette.crustytoothpaste.net>
In-Reply-To: <5807cdbe6d66427c9ff45ea78c2c1ffb@deshaw.com>

On 2023-01-09 at 17:12:56, Shupak, Vitaly wrote:

Show 11 quoted lines

> A change to git-prompt.sh in v2.38 to show presence of unresolved conflicts contains syntax which is not valid under zsh < 5.0.6. This version of zsh is old, but is still the default on RedHat 7 machines, for example.
> 
> The offending block is:
> 
>        local conflict="" # state indicator for unresolved conflicts
>        if [[ "${GIT_PS1_SHOWCONFLICTSTATE}" == "yes" ]] &&
>           [[ $(git ls-files --unmerged 2>/dev/null) ]]; then
>                conflict="|CONFLICT"
>        fi
> 
> [[ $(command) ]] syntax doesn't work in older version of zsh and should use [[ -n "$(command)" ]] instead.

Does [ "$(command)" ] work? I would assume so, because that's in POSIX. If so, that might also be a valid approach since it doesn't look like we need the special behaviour of the double-bracket operator.

-- 
brian m. carlson (he/him or they/them)
Toronto, Ontario, CA