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List: git
Subject: Re: [PATCH v4 1/2] t6400: preserve git ls-files exit status code
From: Junio C Hamano <gitster () pobox ! com>
Date: 2021-06-30 20:44:04
Message-ID: xmqqzgv7t757.fsf () gitster ! g
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Đo n Trần Công Danh <congdanhqx@gmail.com> writes:
>> Could be, except that I recall we saw extra noises like --out/--err
>> that weren't used and contaminating the current working directory,
>> which are gone from the latest iteration.
>
> Yes, in v{1,2}, there's the extra noises of --out and --err,
> but it's gone in v3.
>
> I guess you're thinking about the contamination of $PWD iff it's not
> a git worktree. That could be simplified by BUG-ging if $PWD is not
> a git worktree.
No. I am not thinking about that. I do not think it is a big loss
if the helper cannot be used in non-repository.
> Maybe, you're thinking about the extra noises to handle the failure run
> of command under check? That could be dropped, too.
No. I am not thinking about that, either.
> Would you mind looking at v3 1/4 again to see what is your opinion
> there? I don't mind re-roll a same or simplified version of v3,
> with s/test_line_count_cmd/test_output_wc_l/ if you see fit.
Let's not go back that far. This is taken from v4 (t/t6400) ...
local ops val &&
if test "$#" -le 2
then
BUG "Expect 2 or more arguments"
fi &&
ops="$1" &&
val="$2" &&
shift 2 &&
mkdir -p .git/trash &&
"$@" >.git/trash/output &&
test_line_count "$ops" "$val" .git/trash/output
... except that it runs '"$@"' instead of 'git ls-files "$@"', so
that we could try running things other than ls-files, and that would
be mostly good enough. We may want to be prepared for a caller who
wants to use the helper from within a subdirectory by not hardcoding
".git/trash", though. Something along the lines of ...
local ops val &&
+ local trashdir=$(git rev-parse --git-dir)/trash &&
if test ...
...
- mkdir -p .git/trash &&
- "$@" >".git/trash/output" &&
- test_line_count "$ops" "$val" .git/trash/output
+ mkdir -p "$trashdir" &&
+ "$@" >"$trashdir/output" &&
+ test_line_count "$ops" "$val" "$trashdir/output"
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