Teach 'diff' about 'diff' attribute.

diff --git a/git-pull.sh b/git-pull.sh
index 959261757c1fd8df50f7894ba449b76d621f3c45..a3665d7751cc836dc669390df7b972c29575037b 100755 (executable)
--- a/git-pull.sh
+++ b/git-pull.sh
@@ -83,8 +83,17 @@ merge_head=$(sed -e '/       not-for-merge   /d' \
 
 case "$merge_head" in
 '')
-       curr_branch=$(git-symbolic-ref HEAD | \
-               sed -e 's|^refs/heads/||')
+       curr_branch=$(git-symbolic-ref -q HEAD)
+       case $? in
+         0) ;;
+         1) echo >&2 "You are not currently on a branch; you must explicitly"
+            echo >&2 "specify which branch you wish to merge:"
+            echo >&2 "  git pull <remote> <branch>"
+            exit 1;;
+         *) exit $?;;
+       esac
+       curr_branch=${curr_branch#refs/heads/}
+
        echo >&2 "Warning: No merge candidate found because value of config option
          \"branch.${curr_branch}.merge\" does not match any remote branch fetched."
        echo >&2 "No changes."