built-in add -i: do not try to `patch`/`diff` an empty list of files

When the user does not select any files to `patch` or `diff`, there is no need to call `run_add_p()` on them. Even worse: we _have_ to avoid calling `parse_pathspec()` with an empty list because that would trigger this error: BUG: pathspec.c:557: PATHSPEC_PREFER_CWD requires arguments So let's avoid doing any work on a list of files that is empty anyway. This fixes https://github.com/git-for-windows/git/issues/2466. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Johannes Schindelin committed Jan 16, 2020 at 08:33 UTC d660a30ceb9d8bd9940be82d240901c87999186b
1 file changed +2 -2
add-interactive.c
+2 -2
index f395d54c08..14d4688c26 100644 --- a/add-interactive.c +++ b/add-interactive.c @@ -915,7 +915,7 @@ static int run_patch(struct add_i_state *s, const struct pathspec *ps, opts->prompt = N_("Patch update"); count = list_and_choose(s, files, opts); - if (count >= 0) { + if (count > 0) { struct argv_array args = ARGV_ARRAY_INIT; argv_array_pushl(&args, "git", "add--interactive", "--patch", @@ -953,7 +953,7 @@ static int run_diff(struct add_i_state *s, const struct pathspec *ps, opts->flags = IMMEDIATE; count = list_and_choose(s, files, opts); opts->flags = 0; - if (count >= 0) { + if (count > 0) { struct argv_array args = ARGV_ARRAY_INIT; argv_array_pushl(&args, "git", "diff", "-p", "--cached",