The only place that the issue this series addresses was observed
where we read "cat-file commit" output and put it in GIT_AUTHOR_DATE
in order to replay a commit with an ancient timestamp.
With the previous patch alone, "git commit --date='20100917 +0900'"
can be misinterpreted to mean an ancient timestamp, not September in
year 2010. Guard this codepath by requring an extra '@' in front of
the raw git timestamp on the parsing side. This of course needs to
be compensated by updating get_author_ident_from_commit and the code
for "git commit --amend" to prepend '@' to the string read from the
existing commit in the GIT_AUTHOR_DATE environment variable.
Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
---
builtin/commit.c | 6 ++++++
date.c | 3 ++-
git-sh-setup.sh | 2 +-
t/t3400-rebase.sh | 23 +++++++++++++++++++++++
4 files changed, 32 insertions(+), 2 deletions(-)
diff --git a/builtin/commit.c b/builtin/commit.c
index cbc9613..bcb0db2 100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -534,6 +534,7 @@ static void determine_author_info(struct strbuf *author_ident)
if (author_message) {
const char *a, *lb, *rb, *eol;
+ size_t len;
a = strstr(author_message_buffer, "\nauthor ");
if (!a)
@@ -554,6 +555,11 @@ static void determine_author_info(struct strbuf *author_ident)
(a + strlen("\nauthor "))));
email = xmemdupz(lb + strlen("<"), rb - (lb + strlen("<")));
date = xmemdupz(rb + strlen("> "), eol - (rb + strlen("> ")));
+ len = eol - (rb + strlen("> "));
+ date = xmalloc(len + 2);
+ *date = '@';
+ memcpy(date + 1, rb + strlen("> "), len);
+ date[len + 1] = '\0';
}
if (force_author) {
diff --git a/date.c b/date.c
index c212946..ca60767 100644
--- a/date.c
+++ b/date.c
@@ -637,7 +637,8 @@ int parse_date_basic(const char *date, unsigned long *timestamp, int *offset)
*offset = -1;
tm_gmt = 0;
- if (!match_object_header_date(date, timestamp, offset))
+ if (*date == '@' &&
+ !match_object_header_date(date + 1, timestamp, offset))
return 0; /* success */
for (;;) {
int match = 0;
diff --git a/git-sh-setup.sh b/git-sh-setup.sh
index 8e427da..015fe6e 100644
--- a/git-sh-setup.sh
+++ b/git-sh-setup.sh
@@ -200,7 +200,7 @@ get_author_ident_from_commit () {
s/.*/GIT_AUTHOR_EMAIL='\''&'\''/p
g
- s/^author [^<]* <[^>]*> \(.*\)$/\1/
+ s/^author [^<]* <[^>]*> \(.*\)$/@\1/
s/.*/GIT_AUTHOR_DATE='\''&'\''/p
q
diff --git a/t/t3400-rebase.sh b/t/t3400-rebase.sh
index 6eaecec..e26e14d 100755
--- a/t/t3400-rebase.sh
+++ b/t/t3400-rebase.sh
@@ -218,4 +218,27 @@ test_expect_success 'rebase -m can copy notes' '
test "a note" = "$(git notes show HEAD)"
'
+test_expect_success 'rebase commit with an ancient timestamp' '
+ git reset --hard &&
+
+ >old.one && git add old.one && test_tick &&
+ git commit --date="@12345 +0400" -m "Old one" &&
+ >old.two && git add old.two && test_tick &&
+ git commit --date="@23456 +0500" -m "Old two" &&
+ >old.three && git add old.three && test_tick &&
+ git commit --date="@34567 +0600" -m "Old three" &&
+
+ git cat-file commit HEAD^^ >actual &&
+ grep "author .* 12345 +0400$" actual &&
+ git cat-file commit HEAD^ >actual &&
+ grep "author .* 23456 +0500$" actual &&
+ git cat-file commit HEAD >actual &&
+ grep "author .* 34567 +0600$" actual &&
+
+ git rebase --onto HEAD^^ HEAD^ &&
+
+ git cat-file commit HEAD >actual &&
+ grep "author .* 34567 +0600$" actual
+'
+
test_done
--
1.7.9.172.ge26ae
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