1 files changed, 30 insertions, 16 deletions

diff --git a/git-pull.sh b/git-pull.sh
index 0f24182..fc78592 100755
--- a/git-pull.sh
+++ b/git-pull.sh
@@ -89,14 +89,24 @@ error_on_no_merge_candidates () {
 	done
 
 	curr_branch=${curr_branch#refs/heads/}
-
-	if [ -z "$curr_branch" ]; then
+	upstream=$(git config "branch.$curr_branch.merge")
+	remote=$(git config "branch.$curr_branch.remote")
+
+	if [ $# -gt 1 ]; then
+		echo "There are no candidates for merging in the refs that you just fetched."
+		echo "Generally this means that you provided a wildcard refspec which had no"
+		echo "matches on the remote end."
+	elif [ $# -gt 0 ] && [ "$1" != "$remote" ]; then
+		echo "You asked to pull from the remote '$1', but did not specify"
+		echo "a branch to merge. Because this is not the default configured remote"
+		echo "for your current branch, you must specify a branch on the command line."
+	elif [ -z "$curr_branch" ]; then
 		echo "You are not currently on a branch, so I cannot use any"
 		echo "'branch.<branchname>.merge' in your configuration file."
 		echo "Please specify which branch you want to merge on the command"
 		echo "line and try again (e.g. 'git pull <repository> <refspec>')."
 		echo "See git-pull(1) for details."
-	else
+	elif [ -z "$upstream" ]; then
 		echo "You asked me to pull without telling me which branch you"
 		echo "want to merge with, and 'branch.${curr_branch}.merge' in"
 		echo "your configuration file does not tell me either.	Please"
@@ -114,16 +124,27 @@ error_on_no_merge_candidates () {
 		echo "    remote.<nickname>.fetch = <refspec>"
 		echo
 		echo "See git-config(1) for details."
+	else
+		echo "Your configuration specifies to merge the ref '${upstream#refs/heads/}' from the"
+		echo "remote, but no such ref was fetched."
 	fi
 	exit 1
 }
 
 test true = "$rebase" && {
-	git update-index --ignore-submodules --refresh &&
-	git diff-files --ignore-submodules --quiet &&
-	git diff-index --ignore-submodules --cached --quiet HEAD -- ||
-	die "refusing to pull with rebase: your working tree is not up-to-date"
-
+	if ! git rev-parse -q --verify HEAD >/dev/null
+	then
+		# On an unborn branch
+		if test -f "$GIT_DIR/index"
+		then
+			die "updating an unborn branch with changes added to the index"
+		fi
+	else
+		git update-index --ignore-submodules --refresh &&
+		git diff-files --ignore-submodules --quiet &&
+		git diff-index --ignore-submodules --cached --quiet HEAD -- ||
+		die "refusing to pull with rebase: your working tree is not up-to-date"
+	fi
 	oldremoteref= &&
 	. git-parse-remote &&
 	remoteref="$(get_remote_merge_branch "$@" 2>/dev/null)" &&
@@ -169,14 +190,7 @@ merge_head=$(sed -e '/	not-for-merge	/d' \
 
 case "$merge_head" in
 '')
-	case $? in
-	0) error_on_no_merge_candidates "$@";;
-	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 $?;;
-	esac
+	error_on_no_merge_candidates "$@"
 	;;
 ?*' '?*)
 	if test -z "$orig_head"