completion: fix prompt with unset SHOWCONFLICTSTATE in nounset mode
`GIT_PS1_SHOWCONFLICTSTATE` is a user variable that might not be set,
causing errors when the shell is in `nounset` mode.
Take into account on access by falling back to an empty string.
Signed-off-by: Ville Skyttä <ville.skytta@iki.fi>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/contrib/completion/git-prompt.sh b/contrib/completion/git-prompt.sh
index 71f179c..3826f52 100644
--- a/contrib/completion/git-prompt.sh
+++ b/contrib/completion/git-prompt.sh
@@ -528,7 +528,7 @@
fi
local conflict="" # state indicator for unresolved conflicts
- if [[ "${GIT_PS1_SHOWCONFLICTSTATE}" == "yes" ]] &&
+ if [[ "${GIT_PS1_SHOWCONFLICTSTATE-}" == "yes" ]] &&
[[ $(git ls-files --unmerged 2>/dev/null) ]]; then
conflict="|CONFLICT"
fi
