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[PATCH v2] git-commit: populate the edit buffer with 2 blank lines before s-o-b

From
BCBrandon Casey <bcasey@nvidia.com>
Date
Feb 22, 2013, 22:05 UTC
Message-ID
<1361570727-20255-1-git-send-email-bcasey@nvidia.com>
In-Reply-To
<CA+sFfMdok7wRDhgq7i=b3cu3LB+poExvxLBxYkg8L3pN92bEYg@mail.gmail.com>
From: Brandon Casey <drafnel@gmail.com>

Before commit 33f2f9ab, 'commit -s' would populate the edit buffer with a blank line before the Signed-off-by line. This provided a nice hint to the user that something should be filled in. Let's restore that behavior, but now let's ensure that the Signed-off-by line is preceded by two blank lines to hint that something should be filled in, and that a blank line should separate it from the Signed-off-by line.

Plus, add a test for this behavior.
Reported-by: John Keeping <john@keeping.me.uk>
Signed-off-by: Brandon Casey <drafnel@gmail.com>
---
How about something like this?
-Brandon
 sequencer.c       | 27 +++++++++++++++++++++++++--
 t/t7502-commit.sh | 12 ++++++++++++
 2 files changed, 37 insertions(+), 2 deletions(-)
diff --git a/sequencer.c b/sequencer.c
index 53ee49a..a07d2d0 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -1127,10 +1127,33 @@ void append_signoff(struct strbuf *msgbuf, int ignore_footer, unsigned flag)
 		const char *append_newlines = NULL;
 		size_t len = msgbuf->len - ignore_footer;
 
-		if (len && msgbuf->buf[len - 1] != '\n')
+		if (!len) {
+			/*
+			 * The buffer is completely empty.  Leave foom for
+			 * the title and body to be filled in by the user.
+			 */
 			append_newlines = "\n\n";
-		else if (len > 1 && msgbuf->buf[len - 2] != '\n')
+		} else if (msgbuf->buf[len - 1] != '\n') {
+			/*
+			 * Incomplete line.  Complete the line and add a
+			 * blank one so that there is an empty line between
+			 * the message body and the sob.
+			 */
+			append_newlines = "\n\n";
+		} else if (len == 1) {
+			/*
+			 * Buffer contains a single newline.  Add another
+			 * so that we leave room for the title and body.
+			 */
+			append_newlines = "\n";
+		} else if (msgbuf->buf[len - 2] != '\n') {
+			/*
+			 * Buffer ends with a single newline.  Add another
+			 * so that there is an empty line between the message
+			 * body and the sob.
+			 */
 			append_newlines = "\n";
+		} /* else, the buffer already ends with two newlines. */
 
 		if (append_newlines)
 			strbuf_splice(msgbuf, msgbuf->len - ignore_footer, 0,
diff --git a/t/t7502-commit.sh b/t/t7502-commit.sh
index deb187e..a53a1e0 100755
--- a/t/t7502-commit.sh
+++ b/t/t7502-commit.sh
@@ -349,6 +349,18 @@ test_expect_success 'A single-liner subject with a token plus colon is not a foo
 
 '
 
+test_expect_success 'commit -s places sob on third line after two empty lines' '
+	git commit -s --allow-empty --allow-empty-message &&
+	cat <<-EOF >expect &&
+
+
+		Signed-off-by: $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL>
+
+	EOF
+	egrep -v '^#' .git/COMMIT_EDITMSG >actual &&
+	test_cmp expect actual
+'
+
 write_script .git/FAKE_EDITOR <<\EOF
 mv "$1" "$1.orig"
 (
-- 
1.8.1.3.566.gaa39828
Previous: Brandon CaseyNext: Jeff King
Message 29 of 41 in “unify appending of sob”
  1. 00/12 unify appending of sobBrandon Casey, Feb 12, 2013
  2. 01/12 sequencer.c: rework search for start of footer to improve clarityBrandon Casey, Feb 12, 2013
  3. 02/12 commit, cherry-pick -s: remove broken support for multiline rfc2822 fieldsBrandon Casey, Feb 12, 2013
  4. 03/12 t/test-lib-functions.sh: allow to specify the tag name to test_commitBrandon Casey, Feb 12, 2013
  5. Ævar Arnfjörð BjarmasonMay 13, 2017
  6. 04/12 t/t3511: add some tests of 'cherry-pick -s' functionalityBrandon Casey, Feb 12, 2013
  7. 05/12 sequencer.c: recognize "(cherry picked from ..." as part of s-o-b footerBrandon Casey, Feb 12, 2013
  8. Junio C HamanoFeb 12, 2013
  9. Brandon CaseyFeb 12, 2013
  10. Junio C HamanoFeb 12, 2013
  11. Brandon CaseyFeb 12, 2013
  12. Junio C HamanoFeb 12, 2013
  13. Jonathan NiederFeb 12, 2013
  14. 06/12 sequencer.c: require a conforming footer to be preceded by a blank lineBrandon Casey, Feb 12, 2013
  15. 07/12 sequencer.c: always separate "(cherry picked from" from commit bodyBrandon Casey, Feb 12, 2013
  16. 08/12 sequencer.c: teach append_signoff how to detect duplicate s-o-bBrandon Casey, Feb 12, 2013
  17. 09/12 sequencer.c: teach append_signoff to avoid adding a duplicate newlineBrandon Casey, Feb 12, 2013
  18. 09/12 sequencer.c: teach append_signoff to avoid adding a duplicate newlineBrandon Casey, Feb 12, 2013
  19. John KeepingFeb 14, 2013
  20. Brandon CaseyFeb 15, 2013
  21. John KeepingFeb 17, 2013
  22. Junio C HamanoFeb 21, 2013
  23. Brandon CaseyFeb 21, 2013
  24. Brandon CaseyFeb 21, 2013
  25. Junio C HamanoFeb 21, 2013
  26. git-commit: populate the edit buffer with 2 blank lines before s-o-bBrandon Casey, Feb 22, 2013
  27. Junio C HamanoFeb 22, 2013
  28. Brandon CaseyFeb 22, 2013
  29. git-commit: populate the edit buffer with 2 blank lines before s-o-bBrandon Casey, Feb 22, 2013
  30. Jeff KingFeb 22, 2013
  31. Junio C HamanoFeb 22, 2013
  32. 10/12 t4014: more tests about appending s-o-b linesBrandon Casey, Feb 12, 2013
  33. 11/12 format-patch: update append_signoff prototypeBrandon Casey, Feb 12, 2013
  34. Junio C HamanoFeb 12, 2013
  35. Brandon CaseyFeb 12, 2013
  36. 12/12 Unify appending signoff in format-patch, commit and sequencerBrandon Casey, Feb 12, 2013
  37. 13/12 fixup! t/t3511: add some tests of 'cherry-pick -s' functionalityBrandon Casey, Feb 12, 2013
  38. Jonathan NiederFeb 12, 2013
  39. Junio C HamanoFeb 12, 2013
  40. Jonathan NiederFeb 12, 2013
  41. Junio C HamanoFeb 12, 2013

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