path: root/setup.c
diff options
authorJunio C Hamano <>2007-01-02 07:31:08 (GMT)
committerJunio C Hamano <>2007-01-08 11:02:11 (GMT)
commitc847f537125ceab3425205721fdaaa834e6d8a83 (patch)
treeff9d242fe9d7bd4008f16d7f43e860e0db861981 /setup.c
parent0016a48251abefed11efc919703d980a21c95f2c (diff)
Detached HEAD (experimental)
This allows "git checkout v1.4.3" to dissociate the HEAD of repository from any branch. After this point, "git branch" starts reporting that you are not on any branch. You can go back to an existing branch by saying "git checkout master", for example. This is still experimental. While I think it makes sense to allow commits on top of detached HEAD, it is rather dangerous unless you are careful in the current form. Next "git checkout master" will obviously lose what you have done, so we might want to require "git checkout -f" out of a detached HEAD if we find that the HEAD commit is not an ancestor of any other branches. There is no such safety valve implemented right now. On the other hand, the reason the user did not start the ad-hoc work on a new branch with "git checkout -b" was probably because the work was of a throw-away nature, so the convenience of not having that safety valve might be even better. The user, after accumulating some commits on top of a detached HEAD, can always create a new branch with "git checkout -b" not to lose useful work done while the HEAD was detached. We'll see. Signed-off-by: Junio C Hamano <>
Diffstat (limited to 'setup.c')
1 files changed, 3 insertions, 2 deletions
diff --git a/setup.c b/setup.c
index 2ae57f7..cc97f9f 100644
--- a/setup.c
+++ b/setup.c
@@ -138,7 +138,8 @@ const char **get_pathspec(const char *prefix, const char **pathspec)
* GIT_OBJECT_DIRECTORY environment variable
* - a refs/ directory
* - either a HEAD symlink or a HEAD file that is formatted as
- * a proper "ref:".
+ * a proper "ref:", or a regular file HEAD that has a properly
+ * formatted sha1 object name.
static int is_git_directory(const char *suspect)
@@ -161,7 +162,7 @@ static int is_git_directory(const char *suspect)
return 0;
strcpy(path + len, "/HEAD");
- if (validate_symref(path))
+ if (validate_headref(path))
return 0;
return 1;