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Merge branch 'jk/rev-list-stdin-noop-is-ok'

Browse source 
"git rev-list --stdin </dev/null" used to be an error; it now shows
no output without an error.  "git rev-list --stdin --default HEAD"
still falls back to the given default when nothing is given on the
standard input.

* jk/rev-list-stdin-noop-is-ok:
  rev-list: make empty --stdin not an error
This commit is contained in:
Junio C Hamano 2018-09-17 13:53:48 -07:00
commit 8b6f6075be
4 changed files with 9 additions and 5 deletions
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2
builtin/rev-list.c
View file

@ -493,7 +493,7 @@ int cmd_rev_list(int argc, const char **argv, const char *prefix)
if ((!revs.commits && reflog_walk_empty(revs.reflog_info) &&
(!(revs.tag_objects || revs.tree_objects || revs.blob_objects) &&
!revs.pending.nr) &&
!revs.rev_input_given) ||
!revs.rev_input_given && !revs.read_from_stdin) ||
revs.diff)
usage(rev_list_usage);

5
revision.c
View file

@ -2318,7 +2318,7 @@ static void NORETURN diagnose_missing_default(const char *def)
*/
int setup_revisions(int argc, const char **argv, struct rev_info *revs, struct setup_revision_opt *opt)
{
int i, flags, left, seen_dashdash, read_from_stdin, got_rev_arg = 0, revarg_opt;
int i, flags, left, seen_dashdash, got_rev_arg = 0, revarg_opt;
struct argv_array prune_data = ARGV_ARRAY_INIT;
const char *submodule = NULL;
@ -2348,7 +2348,6 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, struct s
revarg_opt = opt ? opt->revarg_opt : 0;
if (seen_dashdash)
revarg_opt |= REVARG_CANNOT_BE_FILENAME;
read_from_stdin = 0;
for (left = i = 1; i < argc; i++) {
const char *arg = argv[i];
if (*arg == '-') {
@ -2367,7 +2366,7 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, struct s
argv[left++] = arg;
continue;
}
if (read_from_stdin++)
if (revs->read_from_stdin++)
die("--stdin given twice?");
read_revisions_from_stdin(revs, &prune_data);
continue;

5
revision.h
View file

@ -82,6 +82,11 @@ struct rev_info {
*/
int rev_input_given;
/*
* Whether we read from stdin due to the --stdin option.
*/
int read_from_stdin;
/* topo-sort */
enum rev_sort_order sort_order;

2
t/t6018-rev-list-glob.sh
View file

@ -255,7 +255,7 @@ test_expect_success 'rev-list accumulates multiple --exclude' '
compare rev-list "--exclude=refs/remotes/* --exclude=refs/tags/* --all" --branches
'
test_expect_failure 'rev-list should succeed with empty output on empty stdin' '
test_expect_success 'rev-list should succeed with empty output on empty stdin' '
git rev-list --stdin </dev/null >actual &&
test_must_be_empty actual
'