To explicitly remove the sequencer state for a fresh cherry-pick or
revert invocation, introduce a new subcommand called "--reset" to
remove the sequencer state.
Take the opportunity to publicly expose the sequencer paths, and a
generic function called "remove_sequencer_state" that various git
programs can use to remove the sequencer state in a uniform manner;
"git reset" uses it later in this series. Introducing this public API
is also in line with our long-term goal of eventually factoring out
functions from revert.c into a generic commit sequencer.
Signed-off-by: Ramkumar Ramachandra <artagnon@xxxxxxxxx>
Signed-off-by: Jonathan Nieder <jrnieder@xxxxxxxxx>
---
Documentation/git-cherry-pick.txt | 5 +++
Documentation/git-revert.txt | 5 +++
Documentation/sequencer.txt | 4 ++
Makefile | 2 +
builtin/revert.c | 62 +++++++++++++++++++++++++-----------
sequencer.c | 19 +++++++++++
sequencer.h | 20 ++++++++++++
t/t3510-cherry-pick-sequence.sh | 14 ++++++++-
8 files changed, 111 insertions(+), 20 deletions(-)
create mode 100644 Documentation/sequencer.txt
create mode 100644 sequencer.c
create mode 100644 sequencer.h
diff --git a/Documentation/git-cherry-pick.txt b/Documentation/git-cherry-pick.txt
index 6c9c2cb..12a85ba 100644
--- a/Documentation/git-cherry-pick.txt
+++ b/Documentation/git-cherry-pick.txt
@@ -9,6 +9,7 @@ SYNOPSIS
--------
[verse]
'git cherry-pick' [--edit] [-n] [-m parent-number] [-s] [-x] [--ff] <commit>...
+'git cherry-pick' --reset
DESCRIPTION
-----------
@@ -110,6 +111,10 @@ effect to your index in a row.
Pass the merge strategy-specific option through to the
merge strategy. See linkgit:git-merge[1] for details.
+SEQUENCER SUBCOMMANDS
+---------------------
+include::sequencer.txt[]
+
EXAMPLES
--------
git cherry-pick master::
diff --git a/Documentation/git-revert.txt b/Documentation/git-revert.txt
index 3d0a7d1..31c85b4 100644
--- a/Documentation/git-revert.txt
+++ b/Documentation/git-revert.txt
@@ -9,6 +9,7 @@ SYNOPSIS
--------
[verse]
'git revert' [--edit | --no-edit] [-n] [-m parent-number] [-s] <commit>...
+'git revert' --reset
DESCRIPTION
-----------
@@ -91,6 +92,10 @@ effect to your index in a row.
Pass the merge strategy-specific option through to the
merge strategy. See linkgit:git-merge[1] for details.
+SEQUENCER SUBCOMMANDS
+---------------------
+include::sequencer.txt[]
+
EXAMPLES
--------
git revert HEAD~3::
diff --git a/Documentation/sequencer.txt b/Documentation/sequencer.txt
new file mode 100644
index 0000000..16ce88c
--- /dev/null
+++ b/Documentation/sequencer.txt
@@ -0,0 +1,4 @@
+--reset::
+ Forget about the current operation in progress. Can be used
+ to clear the sequencer state after a failed cherry-pick or
+ revert.
diff --git a/Makefile b/Makefile
index 4ed7996..afd7673 100644
--- a/Makefile
+++ b/Makefile
@@ -554,6 +554,7 @@ LIB_H += rerere.h
LIB_H += resolve-undo.h
LIB_H += revision.h
LIB_H += run-command.h
+LIB_H += sequencer.h
LIB_H += sha1-array.h
LIB_H += sha1-lookup.h
LIB_H += sideband.h
@@ -658,6 +659,7 @@ LIB_OBJS += revision.o
LIB_OBJS += run-command.o
LIB_OBJS += server-info.o
LIB_OBJS += setup.o
+LIB_OBJS += sequencer.o
LIB_OBJS += sha1-array.o
LIB_OBJS += sha1-lookup.o
LIB_OBJS += sha1_file.o
diff --git a/builtin/revert.c b/builtin/revert.c
index f088e1c..a8accd6 100644
--- a/builtin/revert.c
+++ b/builtin/revert.c
@@ -14,6 +14,7 @@
#include "merge-recursive.h"
#include "refs.h"
#include "dir.h"
+#include "sequencer.h"
/*
* This implements the builtins revert and cherry-pick.
@@ -28,18 +29,22 @@
static const char * const revert_usage[] = {
"git revert [options] <commit-ish>",
+ "git revert <subcommand>",
NULL
};
static const char * const cherry_pick_usage[] = {
"git cherry-pick [options] <commit-ish>",
+ "git cherry-pick <subcommand>",
NULL
};
enum replay_action { REVERT, CHERRY_PICK };
+enum replay_subcommand { REPLAY_NONE, REPLAY_RESET };
struct replay_opts {
enum replay_action action;
+ enum replay_subcommand subcommand;
/* Boolean options */
int edit;
@@ -61,11 +66,6 @@ struct replay_opts {
#define GIT_REFLOG_ACTION "GIT_REFLOG_ACTION"
-#define SEQ_DIR "sequencer"
-#define SEQ_HEAD_FILE "sequencer/head"
-#define SEQ_TODO_FILE "sequencer/todo"
-#define SEQ_OPTS_FILE "sequencer/opts"
-
static const char *action_name(const struct replay_opts *opts)
{
return opts->action == REVERT ? "revert" : "cherry-pick";
@@ -113,7 +113,9 @@ static void parse_args(int argc, const char **argv, struct replay_opts *opts)
const char * const * usage_str = revert_or_cherry_pick_usage(opts);
const char *me = action_name(opts);
int noop;
+ int reset = 0;
struct option options[] = {
+ OPT_BOOLEAN(0, "reset", &reset, "forget the current operation"),
OPT_BOOLEAN('n', "no-commit", &opts->no_commit, "don't automatically commit"),
OPT_BOOLEAN('e', "edit", &opts->edit, "edit the commit message"),
{ OPTION_BOOLEAN, 'r', NULL, &noop, NULL, "no-op (backward compatibility)",
@@ -142,7 +144,27 @@ static void parse_args(int argc, const char **argv, struct replay_opts *opts)
opts->commit_argc = parse_options(argc, argv, NULL, options, usage_str,
PARSE_OPT_KEEP_ARGV0 |
PARSE_OPT_KEEP_UNKNOWN);
- if (opts->commit_argc < 2)
+
+ /* Set the subcommand */
+ if (reset)
+ opts->subcommand = REPLAY_RESET;
+ else
+ opts->subcommand = REPLAY_NONE;
+
+ /* Check for incompatible command line arguments */
+ if (opts->subcommand == REPLAY_RESET) {
+ verify_opt_compatible(me, "--reset",
+ "--no-commit", opts->no_commit,
+ "--signoff", opts->signoff,
+ "--mainline", opts->mainline,
+ "--strategy", opts->strategy ? 1 : 0,
+ "--strategy-option", opts->xopts ? 1 : 0,
+ "-x", opts->record_origin,
+ "--ff", opts->allow_ff,
+ NULL);
+ }
+
+ else if (opts->commit_argc < 2)
usage_with_options(usage_str, options);
if (opts->allow_ff)
@@ -729,7 +751,6 @@ static void save_opts(struct replay_opts *opts)
static int pick_commits(struct commit_list *todo_list, struct replay_opts *opts)
{
- struct strbuf buf = STRBUF_INIT;
struct commit_list *cur;
int res;
@@ -750,9 +771,7 @@ static int pick_commits(struct commit_list *todo_list, struct replay_opts *opts)
* Sequence of picks finished successfully; cleanup by
* removing the .git/sequencer directory
*/
- strbuf_addf(&buf, "%s", git_path(SEQ_DIR));
- remove_dir_recursively(&buf, 0);
- strbuf_release(&buf);
+ remove_sequencer_state(1);
return 0;
}
@@ -768,16 +787,21 @@ static int pick_revisions(struct replay_opts *opts)
* cherry-pick should be handled differently from an existing
* one that is being continued
*/
- walk_revs_populate_todo(&todo_list, opts);
- create_seq_dir();
- if (get_sha1("HEAD", sha1)) {
- if (opts->action == REVERT)
- die(_("Can't revert as initial commit"));
- die(_("Can't cherry-pick into empty head"));
+ if (opts->subcommand == REPLAY_RESET) {
+ remove_sequencer_state(1);
+ return 0;
+ } else {
+ /* Start a new cherry-pick/ revert sequence */
+ walk_revs_populate_todo(&todo_list, opts);
+ create_seq_dir();
+ if (get_sha1("HEAD", sha1)) {
+ if (opts->action == REVERT)
+ die(_("Can't revert as initial commit"));
+ die(_("Can't cherry-pick into empty head"));
+ }
+ save_head(sha1_to_hex(sha1));
+ save_opts(opts);
}
- save_head(sha1_to_hex(sha1));
- save_opts(opts);
-
return pick_commits(todo_list, opts);
}
diff --git a/sequencer.c b/sequencer.c
new file mode 100644
index 0000000..bc2c046
--- /dev/null
+++ b/sequencer.c
@@ -0,0 +1,19 @@
+#include "cache.h"
+#include "sequencer.h"
+#include "strbuf.h"
+#include "dir.h"
+
+void remove_sequencer_state(int aggressive)
+{
+ struct strbuf seq_dir = STRBUF_INIT;
+ struct strbuf seq_old_dir = STRBUF_INIT;
+
+ strbuf_addf(&seq_dir, "%s", git_path(SEQ_DIR));
+ strbuf_addf(&seq_old_dir, "%s", git_path(SEQ_OLD_DIR));
+ remove_dir_recursively(&seq_old_dir, 0);
+ rename(git_path(SEQ_DIR), git_path(SEQ_OLD_DIR));
+ if (aggressive)
+ remove_dir_recursively(&seq_old_dir, 0);
+ strbuf_release(&seq_dir);
+ strbuf_release(&seq_old_dir);
+}
diff --git a/sequencer.h b/sequencer.h
new file mode 100644
index 0000000..905d295
--- /dev/null
+++ b/sequencer.h
@@ -0,0 +1,20 @@
+#ifndef SEQUENCER_H
+#define SEQUENCER_H
+
+#define SEQ_DIR "sequencer"
+#define SEQ_OLD_DIR "sequencer-old"
+#define SEQ_HEAD_FILE "sequencer/head"
+#define SEQ_TODO_FILE "sequencer/todo"
+#define SEQ_OPTS_FILE "sequencer/opts"
+
+/*
+ * Removes SEQ_OLD_DIR and renames SEQ_DIR to SEQ_OLD_DIR, ignoring
+ * any errors. Intended to be used by 'git reset'.
+ *
+ * With the aggressive flag, it additionally removes SEQ_OLD_DIR,
+ * ignoring any errors. Inteded to be used by the sequencer's
+ * '--reset' subcommand.
+ */
+void remove_sequencer_state(int aggressive);
+
+#endif
diff --git a/t/t3510-cherry-pick-sequence.sh b/t/t3510-cherry-pick-sequence.sh
index 8ee0001..fd69865 100755
--- a/t/t3510-cherry-pick-sequence.sh
+++ b/t/t3510-cherry-pick-sequence.sh
@@ -13,7 +13,7 @@ test_description='Test cherry-pick continuation features
. ./test-lib.sh
pristine_detach () {
- rm -rf .git/sequencer &&
+ git cherry-pick --reset &&
git checkout -f "$1^0" &&
git read-tree -u --reset HEAD &&
git clean -d -f -f -q -x
@@ -70,4 +70,16 @@ test_expect_success 'cherry-pick cleans up sequencer state upon success' '
test_path_is_missing .git/sequencer
'
+test_expect_success '--reset does not complain when no cherry-pick is in progress' '
+ pristine_detach initial &&
+ git cherry-pick --reset
+'
+
+test_expect_success '--reset cleans up sequencer state' '
+ pristine_detach initial &&
+ test_must_fail git cherry-pick base..picked &&
+ git cherry-pick --reset &&
+ test_path_is_missing .git/sequencer
+'
+
test_done
--
1.7.6.351.gb35ac.dirty
--
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