Re: [PATCH 5/5] merge-recursive: simplify handle_change_delete

[Johannes Sixt <j6t@kdbg.org>]

Am 19.05.2018 um 04:07 schrieb Elijah Newren:
> There is really no need for four branches of nearly identical messages
> when we can store the differences into small variables before printing.

Oh, there is a reason for the repeated message text: translations! 
Please do not play sentence Lego with translated strings. The original 
code is preferable.

> It does require a few allocations this way, but makes the code much
> easier to parse for human readers.
> 
> Signed-off-by: Elijah Newren <newren@gmail.com>
> ---
>   merge-recursive.c | 36 +++++++++++-------------------------
>   1 file changed, 11 insertions(+), 25 deletions(-)
> 
> diff --git a/merge-recursive.c b/merge-recursive.c
> index 273ee79afa..3bd727995b 100644
> --- a/merge-recursive.c
> +++ b/merge-recursive.c
> @@ -1290,31 +1290,17 @@ static int handle_change_delete(struct merge_options *o,
>   		if (!ret)
>   			ret = update_file(o, 0, o_oid, o_mode, update_path);
>   	} else {
> -		if (!alt_path) {
> -			if (!old_path) {
> -				output(o, 1, _("CONFLICT (%s/delete): %s deleted in %s "
> -				       "and %s in %s. Version %s of %s left in tree."),
> -				       change, path, delete_branch, change_past,
> -				       change_branch, change_branch, path);
> -			} else {
> -				output(o, 1, _("CONFLICT (%s/delete): %s deleted in %s "
> -				       "and %s to %s in %s. Version %s of %s left in tree."),
> -				       change, old_path, delete_branch, change_past, path,
> -				       change_branch, change_branch, path);
> -			}
> -		} else {
> -			if (!old_path) {
> -				output(o, 1, _("CONFLICT (%s/delete): %s deleted in %s "
> -				       "and %s in %s. Version %s of %s left in tree at %s."),
> -				       change, path, delete_branch, change_past,
> -				       change_branch, change_branch, path, alt_path);
> -			} else {
> -				output(o, 1, _("CONFLICT (%s/delete): %s deleted in %s "
> -				       "and %s to %s in %s. Version %s of %s left in tree at %s."),
> -				       change, old_path, delete_branch, change_past, path,
> -				       change_branch, change_branch, path, alt_path);
> -			}
> -		}
> +		const char *deleted_path = old_path ? old_path : path;
> +		char *supp1 = xstrfmt(old_path ? " to %s" : "", path);
> +		char *supp2 = xstrfmt(alt_path ? " at %s" : "", alt_path);
> +
> +		output(o, 1, _("CONFLICT (%s/delete): %s deleted in %s "
> +		       "and %s%s in %s. Version %s of %s left in tree%s."),
> +		       change, deleted_path, delete_branch, change_past,
> +		       supp1, change_branch, change_branch, path, supp2);
> +		free(supp1);
> +		free(supp2);
> +
>   		/*
>   		 * No need to call update_file() on path when change_branch ==
>   		 * o->branch1 && !alt_path, since that would needlessly touch
>