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-rw-r--r--builtin/log.c22
-rwxr-xr-xt/t4014-format-patch.sh5
2 files changed, 9 insertions, 18 deletions
diff --git a/builtin/log.c b/builtin/log.c
index 0f318107e5..679282706a 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -1311,24 +1311,6 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
rev.show_root_diff = 1;
if (cover_letter) {
- /*
- * NEEDSWORK:randomly pick one positive commit to show
- * diffstat; this is often the tip and the command
- * happens to do the right thing in most cases, but a
- * complex command like "--cover-letter a b c ^bottom"
- * picks "c" and shows diffstat between bottom..c
- * which may not match what the series represents at
- * all and totally broken.
- */
- int i;
- for (i = 0; i < rev.pending.nr; i++) {
- struct object *o = rev.pending.objects[i].item;
- if (!(o->flags & UNINTERESTING))
- head = (struct commit *)o;
- }
- /* There is nothing to show; it is not an error, though. */
- if (!head)
- return 0;
if (!branch_name)
branch_name = find_branch_name(&rev);
}
@@ -1364,6 +1346,10 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
list = xrealloc(list, nr * sizeof(list[0]));
list[nr - 1] = commit;
}
+ if (nr == 0)
+ /* nothing to do */
+ return 0;
+ head = list[0];
total = nr;
if (!keep_subject && auto_number && total > 1)
numbered = 1;
diff --git a/t/t4014-format-patch.sh b/t/t4014-format-patch.sh
index b993dae645..0ada8c78e7 100755
--- a/t/t4014-format-patch.sh
+++ b/t/t4014-format-patch.sh
@@ -1284,4 +1284,9 @@ test_expect_success 'cover letter using branch description (6)' '
grep hello actual >/dev/null
'
+test_expect_success 'cover letter with nothing' '
+ git format-patch --stdout --cover-letter >actual &&
+ test_line_count = 0 actual
+'
+
test_done