commit: -F overrides -t

Commit dbd0f5c7 (Files given on the command line are relative to $cwd,
2008-08-06) introduced parse_options_fix_filename() as a quick fix for
filename arguments used in the parse options API.

git-commit was still broken. This means

    git commit -F log -t temp

in a subdirectory would make git think the log message should be taken
from temp instead of log.

This is because parse_options_fix_filename() calls prefix_filename()
which uses a single static char buffer to do its work. Making two calls
with two char pointers causes the pointers to alias. To prevent
aliasing, we duplicate the string returned by
parse_options_fix_filename().

Signed-off-by: Stephen Boyd <bebarino@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin-commit.c b/builtin-commit.c
index 81371b1d2698a48dba36046d7ff9d849f830a762..baaa75cf908d57e6d8540b6483684400c0b2494b 100644 (file)
--- a/builtin-commit.c
+++ b/builtin-commit.c
@@ -699,7 +699,11 @@ static int parse_and_validate_options(int argc, const char *argv[],
 
        argc = parse_options(argc, argv, builtin_commit_options, usage, 0);
        logfile = parse_options_fix_filename(prefix, logfile);
+       if (logfile)
+               logfile = xstrdup(logfile);
        template_file = parse_options_fix_filename(prefix, template_file);
+       if (template_file)
+               template_file = xstrdup(template_file);
 
        if (force_author && !strchr(force_author, '>'))
                force_author = find_author_by_nickname(force_author);

diff --git a/t/t7500-commit.sh b/t/t7500-commit.sh
index 5998baf27b5ad0fb32bf0fd42023d029a65d0e6b..8eec0fa9bc7278981b9a16571c588ede0a94d341 100755 (executable)
--- a/t/t7500-commit.sh
+++ b/t/t7500-commit.sh
@@ -183,4 +183,14 @@ test_expect_success 'commit message from stdin' '
        commit_msg_is "Log with foo word"
 '
 
+test_expect_success 'commit -F overrides -t' '
+       (
+               cd subdir &&
+               echo "-F log" > f.log &&
+               echo "-t template" > t.template &&
+               git commit --allow-empty -F f.log -t t.template
+       ) &&
+       commit_msg_is "-F log"
+'
+
 test_done