Disallow working directory commands in a bare repository.

If the user tries to run a porcelainish command which requires
a working directory in a bare repository they may get unexpected
results which are difficult to predict and may differ from command
to command.

Instead we should detect that the current repository is a bare
repository and refuse to run the command there, as there is no
working directory associated with it.

[jc: updated Shawn's original somewhat -- bugs are mine.]

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
Signed-off-by: Junio C Hamano <junkio@cox.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/git-am.sh b/git-am.sh
index 7c0bb6084b..f50de61049 100755
--- a/git-am.sh
+++ b/git-am.sh
@@ -7,6 +7,7 @@ USAGE='[--signoff] [--dotest=<dir>] [--utf8] [--binary] [--3way]
   or, when resuming [--skip | --resolved]'
 . git-sh-setup
 set_reflog_action am
+require_work_tree
 
 git var GIT_COMMITTER_IDENT >/dev/null || exit