Make git-rerere a builtin

diff --git a/git-am.sh b/git-am.sh
index d0af786aec3f797943290cdc63fa77f393900160..0126a77b924e7f1fe7f3913b84350ab35e6e043a 100755 (executable)
--- a/git-am.sh
+++ b/git-am.sh
@@ -166,10 +166,25 @@ fi
 
 if test -d "$dotest"
 then
-       if test ",$#," != ",0," || ! tty -s
-       then
-               die "previous dotest directory $dotest still exists but mbox given."
-       fi
+       case "$#,$skip$resolved" in
+       0,*t*)
+               # Explicit resume command and we do not have file, so
+               # we are happy.
+               : ;;
+       0,)
+               # No file input but without resume parameters; catch
+               # user error to feed us a patch from standard input
+               # when there is already .dotest.  This is somewhat
+               # unreliable -- stdin could be /dev/null for example
+               # and the caller did not intend to feed us a patch but
+               # wanted to continue unattended.
+               tty -s
+               ;;
+       *)
+               false
+               ;;
+       esac ||
+       die "previous dotest directory $dotest still exists but mbox given."
        resume=yes
 else
        # Make sure we are not given --skip nor --resolved
@@ -231,6 +246,10 @@ last=`cat "$dotest/last"`
 this=`cat "$dotest/next"`
 if test "$skip" = t
 then
+       if test -d "$GIT_DIR/rr-cache"
+       then
+               git-rerere clear
+       fi
        this=`expr "$this" + 1`
        resume=
 fi
@@ -382,17 +401,21 @@ do
                changed="$(git-diff-index --cached --name-only HEAD)"
                if test '' = "$changed"
                then
-                       echo "No changes - did you forget update-index?"
+                       echo "No changes - did you forget to use 'git add'?"
                        stop_here_user_resolve $this
                fi
                unmerged=$(git-ls-files -u)
                if test -n "$unmerged"
                then
                        echo "You still have unmerged paths in your index"
-                       echo "did you forget update-index?"
+                       echo "did you forget to use 'git add'?"
                        stop_here_user_resolve $this
                fi
                apply_status=0
+               if test -d "$GIT_DIR/rr-cache"
+               then
+                       git rerere
+               fi
                ;;
        esac