git reset '-' will reset to the previous branch. To reset a file named
"-" use either "git reset ./-" or "git reset -- -".
Change error message to treat single "-" as an ambigous revision or
path rather than a bad flag.
Helped-by: Junio C Hamano <gits...@pobox.com>
Helped-by: Eric Sunshine <sunsh...@sunshineco.com>
Helped-by: Matthieu Moy <matthieu....@grenoble-inp.fr>
Signed-off-by: Sudhanshu Shekhar <sudshekha...@gmail.com>
---
I have changed the logic to ensure argv[0] isn't changed at any point.
Creating a modified_argv0 variable let's me do that.
I couldn't think of any other way to achieve this, apart from changing things
directly in the sha1_name.c file (like Junio's changes). Please let me know
if some further changes are needed.
builtin/reset.c | 17 +++++++++++++----
setup.c | 2 +-
2 files changed, 14 insertions(+), 5 deletions(-)
diff --git a/builtin/reset.c b/builtin/reset.c
index 4c08ddc..bc50e14 100644
--- a/builtin/reset.c
+++ b/builtin/reset.c
@@ -192,6 +192,7 @@ static void parse_args(struct pathspec *pathspec,
{
const char *rev = "HEAD";
unsigned char unused[20];
+ const char *modified_argv0 = argv[0];
/*
* Possible arguments are:
*
@@ -205,10 +206,17 @@ static void parse_args(struct pathspec *pathspec,
*/
if (argv[0]) {
+ if (!strcmp(argv[0], "-")) {
+ modified_argv0 = "@{-1}";
+ }
+ else {
+ modified_argv0 = argv[0];
+ }
+
if (!strcmp(argv[0], "--")) {
argv++; /* reset to HEAD, possibly with paths */
} else if (argv[1] && !strcmp(argv[1], "--")) {
- rev = argv[0];
+ rev = modified_argv0;
argv += 2;
}
/*
@@ -216,14 +224,15 @@ static void parse_args(struct pathspec *pathspec,
* has to be unambiguous. If there is a single argument, it
* can not be a tree
*/
- else if ((!argv[1] && !get_sha1_committish(argv[0], unused)) ||
- (argv[1] && !get_sha1_treeish(argv[0], unused))) {
+ else if ((!argv[1] && !get_sha1_committish(modified_argv0,
unused)) ||
+ (argv[1] && !get_sha1_treeish(modified_argv0,
unused))) {
/*
* Ok, argv[0] looks like a commit/tree; it should not
* be a filename.
*/
verify_non_filename(prefix, argv[0]);
- rev = *argv++;
+ rev = modified_argv0;
+ argv++;
} else {
/* Otherwise we treat this as a filename */
verify_filename(prefix, argv[0], 1);
diff --git a/setup.c b/setup.c
index 979b13f..b621b62 100644
--- a/setup.c
+++ b/setup.c
@@ -200,7 +200,7 @@ void verify_filename(const char *prefix,
int diagnose_misspelt_rev)
{
if (*arg == '-')
- die("bad flag '%s' used after filename", arg);
+ die("ambiguous argument '%s': unknown revision or path", arg);
if (check_filename(prefix, arg))
return;
die_verify_filename(prefix, arg, diagnose_misspelt_rev);
--
2.3.1.277.gd67f9d5.dirty
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