Re: [PATCH v3] difftool --dir-diff: allow changing any clean working tree file

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Kenichi Saita <nitoyon@xxxxxxxxx> writes:

> The temporary directory prepared by "difftool --dir-diff" to
> show the result of a change can be modified by the user via
> the tree diff program, and we try hard not to lose changes
> to them after tree diff program returns to us.

Thanks; will queue (unless there are other suggestions, in which
case we can polish it further while it is on 'pu').

>
> However, the set of files to be copied back is computed
> differently between --symlinks and --no-symlinks modes.  The
> former checks all paths that start out as identical to the
> working tree file, while the latter checks paths that
> already had a local modification in the working tree,
> allowing changes made in the tree diff program to paths that
> did not have any local change to be lost.
>
> Signed-off-by: Kenichi Saita <nitoyon@xxxxxxxxx>
> ---
>  git-difftool.perl   |    9 ++-------
>  t/t7800-difftool.sh |   19 +++++++++++++++++++
>  2 files changed, 21 insertions(+), 7 deletions(-)
>
> diff --git a/git-difftool.perl b/git-difftool.perl
> index 8a75205..e57d3d1 100755
> --- a/git-difftool.perl
> +++ b/git-difftool.perl
> @@ -85,13 +85,9 @@ sub exit_cleanup
>  
>  sub use_wt_file
>  {
> -	my ($repo, $workdir, $file, $sha1, $symlinks) = @_;
> +	my ($repo, $workdir, $file, $sha1) = @_;
>  	my $null_sha1 = '0' x 40;
>  
> -	if ($sha1 ne $null_sha1 and not $symlinks) {
> -		return 0;
> -	}
> -
>  	if (! -e "$workdir/$file") {
>  		# If the file doesn't exist in the working tree, we cannot
>  		# use it.
> @@ -213,8 +209,7 @@ EOF
>  
>  		if ($rmode ne $null_mode) {
>  			my ($use, $wt_sha1) = use_wt_file($repo, $workdir,
> -							  $dst_path, $rsha1,
> -							  $symlinks);
> +							  $dst_path, $rsha1);
>  			if ($use) {
>  				push @working_tree, $dst_path;
>  				$wtindex .= "$rmode $wt_sha1\t$dst_path\0";
> diff --git a/t/t7800-difftool.sh b/t/t7800-difftool.sh
> index d46f041..2418528 100755
> --- a/t/t7800-difftool.sh
> +++ b/t/t7800-difftool.sh
> @@ -385,6 +385,25 @@ test_expect_success PERL,SYMLINKS 'difftool --dir-diff --symlink without unstage
>  	test_cmp actual expect
>  '
>  
> +write_script modify-right-file <<\EOF
> +echo "new content" >"$2/file"
> +EOF
> +
> +run_dir_diff_test 'difftool --dir-diff syncs worktree with unstaged change' '
> +	test_when_finished git reset --hard &&
> +	echo "orig content" >file &&
> +	git difftool -d $symlinks --extcmd "$(pwd)/modify-right-file" branch &&
> +	echo "new content" >expect &&
> +	test_cmp expect file
> +'
> +
> +run_dir_diff_test 'difftool --dir-diff syncs worktree without unstaged change' '
> +	test_when_finished git reset --hard &&
> +	git difftool -d $symlinks --extcmd "$(pwd)/modify-right-file" branch &&
> +	echo "new content" >expect &&
> +	test_cmp expect file
> +'
> +
>  write_script modify-file <<\EOF
>  echo "new content" >file
>  EOF
--
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