archive: re-allow HEAD:Documentation on a remote invocation

diff --git a/git-parse-remote.sh b/git-parse-remote.sh
old mode 100755 (executable)
new mode 100644 (file)
index 5f47b18..b24119d
--- a/git-parse-remote.sh
+++ b/git-parse-remote.sh
@@ -4,58 +4,9 @@
 # this would fail in that case and would issue an error message.
 GIT_DIR=$(git rev-parse -q --git-dir) || :;
 
-get_data_source () {
-       case "$1" in
-       */*)
-               echo ''
-               ;;
-       .)
-               echo self
-               ;;
-       *)
-               if test "$(git config --get "remote.$1.url")"
-               then
-                       echo config
-               elif test -f "$GIT_DIR/remotes/$1"
-               then
-                       echo remotes
-               elif test -f "$GIT_DIR/branches/$1"
-               then
-                       echo branches
-               else
-                       echo ''
-               fi ;;
-       esac
-}
-
-get_remote_url () {
-       data_source=$(get_data_source "$1")
-       case "$data_source" in
-       '')
-               echo "$1"
-               ;;
-       self)
-               echo "$1"
-               ;;
-       config)
-               git config --get "remote.$1.url"
-               ;;
-       remotes)
-               sed -ne '/^URL: */{
-                       s///p
-                       q
-               }' "$GIT_DIR/remotes/$1"
-               ;;
-       branches)
-               sed -e 's/#.*//' "$GIT_DIR/branches/$1"
-               ;;
-       *)
-               die "internal error: get-remote-url $1" ;;
-       esac
-}
-
 get_default_remote () {
-       curr_branch=$(git symbolic-ref -q HEAD | sed -e 's|^refs/heads/||')
+       curr_branch=$(git symbolic-ref -q HEAD)
+       curr_branch="${curr_branch#refs/heads/}"
        origin=$(git config --get "branch.$curr_branch.remote")
        echo ${origin:-origin}
 }
@@ -66,7 +17,7 @@ get_remote_merge_branch () {
            origin="$1"
            default=$(get_default_remote)
            test -z "$origin" && origin=$default
-           curr_branch=$(git symbolic-ref -q HEAD)
+           curr_branch=$(git symbolic-ref -q HEAD) &&
            [ "$origin" = "$default" ] &&
            echo $(git for-each-ref --format='%(upstream)' $curr_branch)
            ;;
@@ -89,7 +40,51 @@ get_remote_merge_branch () {
            refs/heads/*) remote=${remote#refs/heads/} ;;
            refs/* | tags/* | remotes/* ) remote=
            esac
-
-           [ -n "$remote" ] && echo "refs/remotes/$repo/$remote"
+           [ -n "$remote" ] && case "$repo" in
+               .)
+                   echo "refs/heads/$remote"
+                   ;;
+               *)
+                   echo "refs/remotes/$repo/$remote"
+                   ;;
+           esac
        esac
 }
+
+error_on_missing_default_upstream () {
+       cmd="$1"
+       op_type="$2"
+       op_prep="$3"
+       example="$4"
+       branch_name=$(git symbolic-ref -q HEAD)
+       if test -z "$branch_name"
+       then
+               echo "You are not currently on a branch, so I cannot use any
+'branch.<branchname>.merge' in your configuration file.
+Please specify which branch you want to $op_type $op_prep on the command
+line and try again (e.g. '$example').
+See git-${cmd}(1) for details."
+       else
+               echo "You asked me to $cmd without telling me which branch you
+want to $op_type $op_prep, and 'branch.${branch_name#refs/heads/}.merge' in
+your configuration file does not tell me, either. Please
+specify which branch you want to use on the command line and
+try again (e.g. '$example').
+See git-${cmd}(1) for details.
+
+If you often $op_type $op_prep the same branch, you may want to
+use something like the following in your configuration file:
+    [branch \"${branch_name#refs/heads/}\"]
+    remote = <nickname>
+    merge = <remote-ref>"
+               test rebase = "$op_type" &&
+               echo "    rebase = true"
+               echo "
+    [remote \"<nickname>\"]
+    url = <url>
+    fetch = <refspec>
+
+See git-config(1) for details."
+       fi
+       exit 1
+}