wt-status: tolerate dangling marks

When a user checks out the upstream branch of HEAD, the upstream branch
not being a local branch, and then runs "git status", like this:

  git clone $URL client
  cd client
  git checkout @{u}
  git status

no status is printed, but instead an error message:

  fatal: HEAD does not point to a branch

(This error message when running "git branch" persists even after
checking out other things - it only stops after checking out a branch.)

This is because "git status" reads the reflog when determining the "HEAD
detached" message, and thus attempts to DWIM "@{u}", but that doesn't
work because HEAD no longer points to a branch.

Therefore, when calculating the status of a worktree, tolerate dangling
marks. This is done by adding an additional parameter to
dwim_ref() and repo_dwim_ref().

Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jonathan Tan
2020-09-01 15:28:09 -07:00
committed by Junio C Hamano
parent ec06b05568
commit f24c30e0b6
19 changed files with 60 additions and 29 deletions

View File

@@ -397,10 +397,10 @@ static void parse_treeish_arg(const char **argv,
const char *colon = strchrnul(name, ':');
int refnamelen = colon - name;
if (!dwim_ref(name, refnamelen, &oid, &ref))
if (!dwim_ref(name, refnamelen, &oid, &ref, 0))
die(_("no such ref: %.*s"), refnamelen, name);
} else {
dwim_ref(name, strlen(name), &oid, &ref);
dwim_ref(name, strlen(name), &oid, &ref, 0);
}
if (get_oid(name, &oid))