mergetool--lib: remove use of $status global

Remove return statements and rework check_unchanged() so that the exit
status from the last evaluated expression bubbles up to the callers.

Signed-off-by: David Aguilar <davvid@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/git-mergetool--lib.sh b/git-mergetool--lib.sh
index 3e06389136496c29cf5b045d616f387781ac9b9c..fe61e89f31c44ca90dbfba468cf8b23d3993ba9f 100644 (file)
--- a/git-mergetool--lib.sh
+++ b/git-mergetool--lib.sh
@@ -92,7 +92,7 @@ translate_merge_tool_path () {
 check_unchanged () {
        if test "$MERGED" -nt "$BACKUP"
        then
-               status=0
+               return 0
        else
                while true
                do
@@ -100,8 +100,8 @@ check_unchanged () {
                        printf "Was the merge successful? [y/n] "
                        read answer || return 1
                        case "$answer" in
-                       y*|Y*) status=0; break ;;
-                       n*|N*) status=1; break ;;
+                       y*|Y*) return 0 ;;
+                       n*|N*) return 1 ;;
                        esac
                done
        fi
@@ -119,8 +119,6 @@ setup_user_tool () {
 
        diff_cmd () {
                ( eval $merge_tool_cmd )
-               status=$?
-               return $status
        }
 
        merge_cmd () {
@@ -133,9 +131,7 @@ setup_user_tool () {
                        check_unchanged
                else
                        ( eval $merge_tool_cmd )
-                       status=$?
                fi
-               return $status
        }
 }
 
@@ -152,13 +148,11 @@ setup_tool () {
        }
 
        diff_cmd () {
-               status=1
-               return $status
+               return 1
        }
 
        merge_cmd () {
-               status=1
-               return $status
+               return 1
        }
 
        translate_merge_tool_path () {
@@ -209,7 +203,6 @@ run_merge_tool () {
 
        merge_tool_path=$(get_merge_tool_path "$1") || exit
        base_present="$2"
-       status=0
 
        # Bring tool-specific functions into scope
        setup_tool "$1" || return 1
@@ -220,8 +213,6 @@ run_merge_tool () {
        else
                run_diff_cmd "$1"
        fi
-       status=$?
-       return $status
 }
 
 # Run a either a configured or built-in diff tool