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-rw-r--r--Documentation/config/format.txt4
-rw-r--r--builtin/log.c130
-rwxr-xr-xt/t4014-format-patch.sh22
3 files changed, 130 insertions, 26 deletions
diff --git a/Documentation/config/format.txt b/Documentation/config/format.txt
index 564e809..c2efd87 100644
--- a/Documentation/config/format.txt
+++ b/Documentation/config/format.txt
@@ -96,7 +96,9 @@ format.outputDirectory::
format.useAutoBase::
A boolean value which lets you enable the `--base=auto` option of
- format-patch by default.
+ format-patch by default. Can also be set to "whenAble" to allow
+ enabling `--base=auto` if a suitable base is available, but to skip
+ adding base info otherwise without the format dying.
format.notes::
Provides the default value for the `--notes` option to
diff --git a/builtin/log.c b/builtin/log.c
index b8824d8..55a4fd9 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -805,9 +805,15 @@ enum cover_from_description {
COVER_FROM_AUTO
};
+enum auto_base_setting {
+ AUTO_BASE_NEVER,
+ AUTO_BASE_ALWAYS,
+ AUTO_BASE_WHEN_ABLE
+};
+
static enum thread_level thread;
static int do_signoff;
-static int base_auto;
+static enum auto_base_setting auto_base;
static char *from;
static const char *signature = git_version_string;
static const char *signature_file;
@@ -906,7 +912,11 @@ static int git_format_config(const char *var, const char *value, void *cb)
if (!strcmp(var, "format.outputdirectory"))
return git_config_string(&config_output_directory, var, value);
if (!strcmp(var, "format.useautobase")) {
- base_auto = git_config_bool(var, value);
+ if (value && !strcasecmp(value, "whenAble")) {
+ auto_base = AUTO_BASE_WHEN_ABLE;
+ return 0;
+ }
+ auto_base = git_config_bool(var, value) ? AUTO_BASE_ALWAYS : AUTO_BASE_NEVER;
return 0;
}
if (!strcmp(var, "format.from")) {
@@ -1424,6 +1434,23 @@ static int from_callback(const struct option *opt, const char *arg, int unset)
return 0;
}
+static int base_callback(const struct option *opt, const char *arg, int unset)
+{
+ const char **base_commit = opt->value;
+
+ if (unset) {
+ auto_base = AUTO_BASE_NEVER;
+ *base_commit = NULL;
+ } else if (!strcmp(arg, "auto")) {
+ auto_base = AUTO_BASE_ALWAYS;
+ *base_commit = NULL;
+ } else {
+ auto_base = AUTO_BASE_NEVER;
+ *base_commit = arg;
+ }
+ return 0;
+}
+
struct base_tree_info {
struct object_id base_commit;
int nr_patch_id, alloc_patch_id;
@@ -1436,13 +1463,36 @@ static struct commit *get_base_commit(const char *base_commit,
{
struct commit *base = NULL;
struct commit **rev;
- int i = 0, rev_nr = 0;
+ int i = 0, rev_nr = 0, auto_select, die_on_failure;
- if (base_commit && strcmp(base_commit, "auto")) {
+ switch (auto_base) {
+ case AUTO_BASE_NEVER:
+ if (base_commit) {
+ auto_select = 0;
+ die_on_failure = 1;
+ } else {
+ /* no base information is requested */
+ return NULL;
+ }
+ break;
+ case AUTO_BASE_ALWAYS:
+ case AUTO_BASE_WHEN_ABLE:
+ if (base_commit) {
+ BUG("requested automatic base selection but a commit was provided");
+ } else {
+ auto_select = 1;
+ die_on_failure = auto_base == AUTO_BASE_ALWAYS;
+ }
+ break;
+ default:
+ BUG("unexpected automatic base selection method");
+ }
+
+ if (!auto_select) {
base = lookup_commit_reference_by_name(base_commit);
if (!base)
die(_("unknown commit %s"), base_commit);
- } else if ((base_commit && !strcmp(base_commit, "auto"))) {
+ } else {
struct branch *curr_branch = branch_get(NULL);
const char *upstream = branch_get_upstream(curr_branch, NULL);
if (upstream) {
@@ -1450,19 +1500,32 @@ static struct commit *get_base_commit(const char *base_commit,
struct commit *commit;
struct object_id oid;
- if (get_oid(upstream, &oid))
- die(_("failed to resolve '%s' as a valid ref"), upstream);
+ if (get_oid(upstream, &oid)) {
+ if (die_on_failure)
+ die(_("failed to resolve '%s' as a valid ref"), upstream);
+ else
+ return NULL;
+ }
commit = lookup_commit_or_die(&oid, "upstream base");
base_list = get_merge_bases_many(commit, total, list);
/* There should be one and only one merge base. */
- if (!base_list || base_list->next)
- die(_("could not find exact merge base"));
+ if (!base_list || base_list->next) {
+ if (die_on_failure) {
+ die(_("could not find exact merge base"));
+ } else {
+ free_commit_list(base_list);
+ return NULL;
+ }
+ }
base = base_list->item;
free_commit_list(base_list);
} else {
- die(_("failed to get upstream, if you want to record base commit automatically,\n"
- "please use git branch --set-upstream-to to track a remote branch.\n"
- "Or you could specify base commit by --base=<base-commit-id> manually"));
+ if (die_on_failure)
+ die(_("failed to get upstream, if you want to record base commit automatically,\n"
+ "please use git branch --set-upstream-to to track a remote branch.\n"
+ "Or you could specify base commit by --base=<base-commit-id> manually"));
+ else
+ return NULL;
}
}
@@ -1479,8 +1542,14 @@ static struct commit *get_base_commit(const char *base_commit,
for (i = 0; i < rev_nr / 2; i++) {
struct commit_list *merge_base;
merge_base = get_merge_bases(rev[2 * i], rev[2 * i + 1]);
- if (!merge_base || merge_base->next)
- die(_("failed to find exact merge base"));
+ if (!merge_base || merge_base->next) {
+ if (die_on_failure) {
+ die(_("failed to find exact merge base"));
+ } else {
+ free(rev);
+ return NULL;
+ }
+ }
rev[i] = merge_base->item;
}
@@ -1490,12 +1559,24 @@ static struct commit *get_base_commit(const char *base_commit,
rev_nr = DIV_ROUND_UP(rev_nr, 2);
}
- if (!in_merge_bases(base, rev[0]))
- die(_("base commit should be the ancestor of revision list"));
+ if (!in_merge_bases(base, rev[0])) {
+ if (die_on_failure) {
+ die(_("base commit should be the ancestor of revision list"));
+ } else {
+ free(rev);
+ return NULL;
+ }
+ }
for (i = 0; i < total; i++) {
- if (base == list[i])
- die(_("base commit shouldn't be in revision list"));
+ if (base == list[i]) {
+ if (die_on_failure) {
+ die(_("base commit shouldn't be in revision list"));
+ } else {
+ free(rev);
+ return NULL;
+ }
+ }
}
free(rev);
@@ -1638,6 +1719,7 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
char *branch_name = NULL;
char *base_commit = NULL;
struct base_tree_info bases;
+ struct commit *base;
int show_progress = 0;
struct progress *progress = NULL;
struct oid_array idiff_prev = OID_ARRAY_INIT;
@@ -1714,8 +1796,9 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
PARSE_OPT_OPTARG, thread_callback),
OPT_STRING(0, "signature", &signature, N_("signature"),
N_("add a signature")),
- OPT_STRING(0, "base", &base_commit, N_("base-commit"),
- N_("add prerequisite tree info to the patch series")),
+ OPT_CALLBACK_F(0, "base", &base_commit, N_("base-commit"),
+ N_("add prerequisite tree info to the patch series"),
+ 0, base_callback),
OPT_FILENAME(0, "signature-file", &signature_file,
N_("add a signature from a file")),
OPT__QUIET(&quiet, N_("don't print the patch filenames")),
@@ -1752,9 +1835,6 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
s_r_opt.def = "HEAD";
s_r_opt.revarg_opt = REVARG_COMMITTISH;
- if (base_auto)
- base_commit = "auto";
-
if (default_attach) {
rev.mime_boundary = default_attach;
rev.no_inline = 1;
@@ -2018,8 +2098,8 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
}
memset(&bases, 0, sizeof(bases));
- if (base_commit) {
- struct commit *base = get_base_commit(base_commit, list, nr);
+ base = get_base_commit(base_commit, list, nr);
+ if (base) {
reset_revision_walk();
clear_object_flags(UNINTERESTING);
prepare_bases(&bases, base, list, nr);
diff --git a/t/t4014-format-patch.sh b/t/t4014-format-patch.sh
index 958c2da..294e76c 100755
--- a/t/t4014-format-patch.sh
+++ b/t/t4014-format-patch.sh
@@ -2037,6 +2037,12 @@ test_expect_success 'format-patch errors out when history involves criss-cross'
test_must_fail git format-patch --base=auto -1
'
+test_expect_success 'format-patch format.useAutoBase whenAble history involves criss-cross' '
+ test_config format.useAutoBase whenAble &&
+ git format-patch -1 >patch &&
+ ! grep "^base-commit:" patch
+'
+
test_expect_success 'format-patch format.useAutoBase option' '
git checkout local &&
test_config format.useAutoBase true &&
@@ -2047,6 +2053,16 @@ test_expect_success 'format-patch format.useAutoBase option' '
test_cmp expect actual
'
+test_expect_success 'format-patch format.useAutoBase option with whenAble' '
+ git checkout local &&
+ test_config format.useAutoBase whenAble &&
+ git format-patch --stdout -1 >patch &&
+ grep "^base-commit:" patch >actual &&
+ git rev-parse upstream >commit-id-base &&
+ echo "base-commit: $(cat commit-id-base)" >expect &&
+ test_cmp expect actual
+'
+
test_expect_success 'format-patch --base overrides format.useAutoBase' '
test_config format.useAutoBase true &&
git format-patch --stdout --base=HEAD~1 -1 >patch &&
@@ -2062,6 +2078,12 @@ test_expect_success 'format-patch --no-base overrides format.useAutoBase' '
! grep "^base-commit:" patch
'
+test_expect_success 'format-patch --no-base overrides format.useAutoBase whenAble' '
+ test_config format.useAutoBase whenAble &&
+ git format-patch --stdout --no-base -1 >patch &&
+ ! grep "^base-commit:" patch
+'
+
test_expect_success 'format-patch --base with --attach' '
git format-patch --attach=mimemime --stdout --base=HEAD~ -1 >patch &&
sed -n -e "/^base-commit:/s/.*/1/p" -e "/^---*mimemime--$/s/.*/2/p" \