fetch, pull: ask config for remote information

Now you can say

    [remote.junio]
        url = git://git.kernel.org/pub/scm/git/git.git
        fetch = next:next

    in your .git/config.

[jc: fixed up the log message that still said "pull" ]

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>

git-parse-remote.sh

@@ -10,15 +10,21 @@ get_data_source () {
 		# Not so fast.	This could be the partial URL shorthand...
 		token=$(expr "z$1" : 'z\([^/]*\)/')
 		remainder=$(expr "z$1" : 'z[^/]*/\(.*\)')
-		if test -f "$GIT_DIR/branches/$token"
+		if test "$(git-repo-config --get "remote.$token.url")"
+		then
+			echo config-partial
+		elif test -f "$GIT_DIR/branches/$token"
 		then
 			echo branches-partial
 		else
 			echo ''
 		fi
 		;;
 	*)
-		if test -f "$GIT_DIR/remotes/$1"
+		if test "$(git-repo-config --get "remote.$1.url")"
+		then
+			echo config
+		elif test -f "$GIT_DIR/remotes/$1"
 		then
 			echo remotes
 		elif test -f "$GIT_DIR/branches/$1"
@@ -35,6 +41,15 @@ get_remote_url () {
 	case "$data_source" in
 	'')
 		echo "$1" ;;
+	config-partial)
+		token=$(expr "z$1" : 'z\([^/]*\)/')
+		remainder=$(expr "z$1" : 'z[^/]*/\(.*\)')
+		url=$(git-repo-config --get "remote.$token.url")
+		echo "$url/$remainder"
+		;;
+	config)
+		git-repo-config --get "remote.$1.url"
+		;;
 	remotes)
 		sed -ne '/^URL: */{
 			s///p
@@ -56,8 +71,10 @@ get_remote_url () {
 get_remote_default_refs_for_push () {
 	data_source=$(get_data_source "$1")
 	case "$data_source" in
-	'' | branches | branches-partial)
+	'' | config-partial | branches | branches-partial)
 		;; # no default push mapping, just send matching refs.
+	config)
+		git-repo-config --get-all "remote.$1.push" ;;
 	remotes)
 		sed -ne '/^Push: */{
 			s///p
@@ -111,8 +128,11 @@ canon_refs_list_for_fetch () {
 get_remote_default_refs_for_fetch () {
 	data_source=$(get_data_source "$1")
 	case "$data_source" in
-	'' | branches-partial)
+	'' | config-partial | branches-partial)
 		echo "HEAD:" ;;
+	config)
+		canon_refs_list_for_fetch \
+			$(git-repo-config --get-all "remote.$1.fetch") ;;
 	branches)
 		remote_branch=$(sed -ne '/#/s/.*#//p' "$GIT_DIR/branches/$1")
 		case "$remote_branch" in '') remote_branch=master ;; esac