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[PATCH 6/6] sequencer: Remove sequencer state after final commit

From
Ramkumar Ramachandra <artagnon@gmail.com>
Date
Aug 11, 2011, 18:51 UTC
Message-ID
<1313088705-32222-7-git-send-email-artagnon@gmail.com>
In-Reply-To
<1313088705-32222-1-git-send-email-artagnon@gmail.com>

Since d3f4628e (revert: Remove sequencer state when no commits are pending, 2011-07-06), the sequencer removes the sequencer state before the final commit is actually completed. This design is inherently flawed, as it will not allow the user to abort the sequencer operation at that stage. Instead, write and expose a new function to count the number of commits left in the instruction sheet; use this in builtin/commit.c to remove the sequencer state when a commit has successfully completed and there is only one instruction left in the sheet.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
---
 builtin/commit.c                |    7 ++++++-
 sequencer.c                     |   26 +++++++++++++++-----------
 sequencer.h                     |    1 +
 t/t3510-cherry-pick-sequence.sh |    4 ++--
 4 files changed, 24 insertions(+), 14 deletions(-)
diff --git a/builtin/commit.c b/builtin/commit.c
index e1af9b1..4a5af9a 100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -26,6 +26,7 @@
 #include "unpack-trees.h"
 #include "quote.h"
 #include "submodule.h"
+#include "sequencer.h"
 
 static const char * const builtin_commit_usage[] = {
 	"git commit [options] [--] <filepattern>...",
@@ -1521,7 +1522,11 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
 	unlink(git_path("MERGE_MODE"));
 	unlink(git_path("SQUASH_MSG"));
 
-	if (commit_index_files())
+	/* Remove sequencer state if we just finished the last insn */
+	if (sequencer_count_todo() == 1)
+		remove_sequencer_state(1);
+
+       if (commit_index_files())
 		die (_("Repository has been updated, but unable to write\n"
 		     "new_index file. Check that disk is not full or quota is\n"
 		     "not exceeded, and then \"git reset HEAD\" to recover."));
diff --git a/sequencer.c b/sequencer.c
index e72618c..783b4a9 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -736,6 +736,20 @@ static void read_populate_todo(struct replay_insn_list **todo_list)
 		die(_("Unusable instruction sheet: %s"), todo_file);
 }
 
+int sequencer_count_todo(void)
+{
+	struct replay_insn_list *todo_list = NULL;
+	struct replay_insn_list *cur;
+	int insn_count = 0;
+
+	if (!file_exists(git_path(SEQ_TODO_FILE)))
+		return 0;
+	read_populate_todo(&todo_list);
+	for (cur = todo_list; cur; cur = cur->next)
+		insn_count += 1;
+	return insn_count;
+}
+
 static int populate_opts_cb(const char *key, const char *value, void *data)
 {
 	struct replay_opts *opts = data;
@@ -901,18 +915,8 @@ static int pick_commits(struct replay_insn_list *todo_list,
 	for (cur = todo_list; cur; cur = cur->next) {
 		save_todo(cur);
 		res = do_pick_commit(cur->operand, cur->action, opts);
-		if (res) {
-			if (!cur->next && res > 0)
-				/*
-				 * A conflict was encountered while
-				 * picking the last commit.  The
-				 * sequencer state is useless now --
-				 * the user simply needs to resolve
-				 * the conflict and commit
-				 */
-				remove_sequencer_state(0);
+		if (res)
 			return res;
-		}
 	}
 
 	/*
diff --git a/sequencer.h b/sequencer.h
index ebf20cb..c64ba91 100644
--- a/sequencer.h
+++ b/sequencer.h
@@ -52,5 +52,6 @@ void remove_sequencer_state(int aggressive);
 
 void sequencer_parse_args(int argc, const char **argv, struct replay_opts *opts);
 int sequencer_pick_revisions(struct replay_opts *opts);
+int sequencer_count_todo(void);
 
 #endif
diff --git a/t/t3510-cherry-pick-sequence.sh b/t/t3510-cherry-pick-sequence.sh
index bc7fb13..57e9e7c 100755
--- a/t/t3510-cherry-pick-sequence.sh
+++ b/t/t3510-cherry-pick-sequence.sh
@@ -82,13 +82,13 @@ test_expect_success '--reset cleans up sequencer state' '
 	test_path_is_missing .git/sequencer
 '
 
-test_expect_success 'cherry-pick cleans up sequencer state when one commit is left' '
+test_expect_success 'final commit cleans up sequencer state' '
 	pristine_detach initial &&
 	test_must_fail git cherry-pick base..picked &&
-	test_path_is_missing .git/sequencer &&
 	echo "resolved" >foo &&
 	git add foo &&
 	git commit &&
+	test_path_is_missing .git/sequencer &&
 	{
 		git rev-list HEAD |
 		git diff-tree --root --stdin |
-- 
1.7.6.351.gb35ac.dirty
Previous: Ramkumar RamachandraNext: Jonathan Nieder
Message 25 of 31 in “Towards a generalized sequencer”
  1. 0/6 Towards a generalized sequencerRamkumar Ramachandra, Aug 11, 2011
  2. 1/6 revert: Don't remove the sequencer state on errorRamkumar Ramachandra, Aug 11, 2011
  3. Jonathan NiederAug 11, 2011
  4. Ramkumar RamachandraAug 13, 2011
  5. 2/6 revert: Free memory after get_message callRamkumar Ramachandra, Aug 11, 2011
  6. Jonathan NiederAug 11, 2011
  7. Ramkumar RamachandraAug 12, 2011
  8. 3/6 revert: Parse instruction sheet more cautiouslyRamkumar Ramachandra, Aug 11, 2011
  9. Jonathan NiederAug 11, 2011
  10. 4/6 revert: Allow mixed pick and revert instructionsRamkumar Ramachandra, Aug 11, 2011
  11. Jonathan NiederAug 11, 2011
  12. Ramkumar RamachandraAug 13, 2011
  13. 5/6 sequencer: Expose API to cherry-picking machineryRamkumar Ramachandra, Aug 11, 2011
  14. Jonathan NiederAug 11, 2011
  15. Jonathan NiederAug 11, 2011
  16. Junio C HamanoAug 11, 2011
  17. Ramkumar RamachandraAug 13, 2011
  18. Daniel BarkalowAug 13, 2011
  19. Ramkumar RamachandraAug 13, 2011
  20. Reusing changes after renaming a file (Re: [PATCH 5/6] sequencer: Expose API to cherry-picking machinery)Jonathan Nieder, Aug 13, 2011
  21. Ramkumar RamachandraAug 13, 2011
  22. Jonathan NiederAug 13, 2011
  23. Jonathan NiederAug 13, 2011
  24. Ramkumar RamachandraAug 13, 2011
  25. 6/6 sequencer: Remove sequencer state after final commitRamkumar Ramachandra, Aug 11, 2011
  26. Jonathan NiederAug 11, 2011
  27. Ramkumar RamachandraAug 12, 2011
  28. Jonathan NiederAug 11, 2011
  29. Ramkumar RamachandraAug 12, 2011
  30. Jonathan NiederAug 12, 2011
  31. Ramkumar RamachandraAug 12, 2011

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