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[PATCHv2 1/4] commit: --fixup option for use with rebase --autosquash

From
Pat Notz <patnotz@gmail.com>
Date
Sep 21, 2010, 20:25 UTC
Message-ID
<1285100703-49087-2-git-send-email-patnotz@gmail.com>
In-Reply-To
<1284687596-236-1-git-send-email-patnotz@gmail.com>

This option makes it convenient to construct commit messages for use with 'rebase --autosquash'. The resulting commit message will be "fixup! ..." where "..." is the subject line of the specified commit message.

Example usage:
  $ git commit --fixup HEAD~2
Signed-off-by: Pat Notz <patnotz@gmail.com>
---
 Documentation/git-commit.txt |   13 +++++++++----
 builtin/commit.c             |   23 +++++++++++++++++++----
 2 files changed, 28 insertions(+), 8 deletions(-)
diff --git a/Documentation/git-commit.txt b/Documentation/git-commit.txt
index 42fb1f5..3367f8f 100644
--- a/Documentation/git-commit.txt
+++ b/Documentation/git-commit.txt
@@ -9,10 +9,10 @@ SYNOPSIS
 --------
 [verse]
 'git commit' [-a | --interactive] [-s] [-v] [-u<mode>] [--amend] [--dry-run]
-	   [(-c | -C) <commit>] [-F <file> | -m <msg>] [--reset-author]
-	   [--allow-empty] [--allow-empty-message] [--no-verify] [-e] [--author=<author>]
-	   [--date=<date>] [--cleanup=<mode>] [--status | --no-status] [--]
-	   [[-i | -o ]<file>...]
+	   [(-c | -C | --fixup) <commit>] [-F <file> | -m <msg>]
+	   [--reset-author] [--allow-empty] [--allow-empty-message] [--no-verify]
+	   [-e] [--author=<author>] [--date=<date>] [--cleanup=<mode>]
+	   [--status | --no-status] [--] [[-i | -o ]<file>...]
 
 DESCRIPTION
 -----------
@@ -70,6 +70,11 @@ OPTIONS
 	Like '-C', but with '-c' the editor is invoked, so that
 	the user can further edit the commit message.
 
+--fixup=<commit>::
+	Construct a commit message for use with `rebase --autosquash`.
+	The commit message will be the subject line from the specified
+	commit with a prefix of "fixup! ".
+
 --reset-author::
 	When used with -C/-c/--amend options, declare that the
 	authorship of the resulting commit now belongs of the committer.
diff --git a/builtin/commit.c b/builtin/commit.c
index 66fdd22..0901616 100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -69,6 +69,7 @@ static enum {
 static const char *logfile, *force_author;
 static const char *template_file;
 static char *edit_message, *use_message;
+static char *fixup_message;
 static char *author_name, *author_email, *author_date;
 static int all, edit_flag, also, interactive, only, amend, signoff;
 static int quiet, verbose, no_verify, allow_empty, dry_run, renew_authorship;
@@ -124,6 +125,7 @@ static struct option builtin_commit_options[] = {
 	OPT_CALLBACK('m', "message", &message, "MESSAGE", "specify commit message", opt_parse_m),
 	OPT_STRING('c', "reedit-message", &edit_message, "COMMIT", "reuse and edit message from specified commit"),
 	OPT_STRING('C', "reuse-message", &use_message, "COMMIT", "reuse message from specified commit"),
+	OPT_STRING(0, "fixup", &fixup_message, "COMMIT", "use autosquash formatted message to fixup specified commit"),
 	OPT_BOOLEAN(0, "reset-author", &renew_authorship, "the commit is authored by me now (used with -C-c/--amend)"),
 	OPT_BOOLEAN('s', "signoff", &signoff, "add Signed-off-by:"),
 	OPT_FILENAME('t', "template", &template_file, "use specified template file"),
@@ -586,6 +588,17 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
 		strbuf_add(&sb, buffer + 2, strlen(buffer + 2));
 		hook_arg1 = "commit";
 		hook_arg2 = use_message;
+	} else if (fixup_message) {
+		unsigned char sha1[20];
+		struct commit *commit;
+		struct pretty_print_context ctx = {0};
+		if (get_sha1(fixup_message, sha1))
+			die("could not lookup commit %s", fixup_message);
+		commit = lookup_commit_reference(sha1);
+		if (!commit || parse_commit(commit))
+			die("could not parse commit %s", fixup_message);
+		format_commit_message(commit, "fixup! %s\n\n", &sb, &ctx);
+		hook_arg1 = "message";
 	} else if (!stat(git_path("MERGE_MSG"), &statbuf)) {
 		if (strbuf_read_file(&sb, git_path("MERGE_MSG"), 0) < 0)
 			die_errno("could not read MERGE_MSG");
@@ -863,7 +876,7 @@ static int parse_and_validate_options(int argc, const char *argv[],
 	if (force_author && renew_authorship)
 		die("Using both --reset-author and --author does not make sense");
 
-	if (logfile || message.len || use_message)
+	if (logfile || message.len || use_message || fixup_message)
 		use_editor = 0;
 	if (edit_flag)
 		use_editor = 1;
@@ -883,15 +896,17 @@ static int parse_and_validate_options(int argc, const char *argv[],
 		f++;
 	if (edit_message)
 		f++;
+	if (fixup_message)
+		f++;
 	if (logfile)
 		f++;
 	if (f > 1)
-		die("Only one of -c/-C/-F can be used.");
+		die("Only one of -c/-C/-F/--fixup can be used.");
 	if (message.len && f > 0)
-		die("Option -m cannot be combined with -c/-C/-F.");
+		die("Option -m cannot be combined with -c/-C/-F/--fixup.");
 	if (edit_message)
 		use_message = edit_message;
-	if (amend && !use_message)
+	if (amend && !use_message && !fixup_message)
 		use_message = "HEAD";
 	if (!use_message && renew_authorship)
 		die("--reset-author can be used only with -C, -c or --amend.");
-- 
1.7.3
Previous: Pat NotzNext: Sverre Rabbelier
Message 11 of 21 in “Add commit message options for rebase --autosquash”
  1. 0/2 Add commit message options for rebase --autosquashPat Notz, Sep 17, 2010
  2. 1/2 commit: add message options for rebase --autosquashPat Notz, Sep 17, 2010
  3. Stephen BoydSep 17, 2010
  4. Pat NotzSep 17, 2010
  5. Bryan DrewerySep 17, 2010
  6. Stephen BoydSep 17, 2010
  7. Bryan DrewerySep 17, 2010
  8. Junio C HamanoSep 17, 2010
  9. 2/2 t7500: add tests of commit --fixup/--squashPat Notz, Sep 17, 2010
  10. 0/4 Add commit message options for rebase --autosquashPat Notz, Sep 21, 2010
  11. 1/4 commit: --fixup option for use with rebase --autosquashPat Notz, Sep 21, 2010
  12. Sverre RabbelierSep 21, 2010
  13. Pat NotzSep 22, 2010
  14. 2/4 t7500: add tests of commit --fixupPat Notz, Sep 21, 2010
  15. 3/4 commit: --squash option for use with rebase --autosquashPat Notz, Sep 21, 2010
  16. Pat NotzSep 22, 2010
  17. 4/4 t7500: add tests of commit --squashPat Notz, Sep 21, 2010
  18. Ævar Arnfjörð BjarmasonSep 21, 2010
  19. Pat NotzSep 22, 2010
  20. Ævar Arnfjörð BjarmasonSep 22, 2010
  21. Pat NotzSep 22, 2010

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