parse_date(): '@' prefix forces git-timestamp
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@pobox.com>
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 @@
if (author_message) {
const char *a, *lb, *rb, *eol;
+ size_t len;
a = strstr(author_message_buffer, "\nauthor ");
if (!a)
@@ -554,6 +555,11 @@
(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) {
