git-stash: don't complain when listing in a repo with no stash

diff --git a/git-merge.sh b/git-merge.sh
index 04a5eb0f297a691fa0520d1729ea20bd66a53bd9..981d69d35f4e6349d99192996af3b793071a6172 100755 (executable)
--- a/git-merge.sh
+++ b/git-merge.sh
@@ -3,7 +3,7 @@
 # Copyright (c) 2005 Junio C Hamano
 #
 
-USAGE='[-n] [--no-commit] [--squash] [-s <strategy>] [-m=<merge-message>] <commit>+'
+USAGE='[-n] [--summary] [--no-commit] [--squash] [-s <strategy>] [-m=<merge-message>] <commit>+'
 
 SUBDIRECTORY_OK=Yes
 . git-sh-setup
@@ -16,10 +16,10 @@ test -z "$(git ls-files -u)" ||
 LF='
 '
 
-all_strategies='recur recursive octopus resolve stupid ours'
+all_strategies='recur recursive octopus resolve stupid ours subtree'
 default_twohead_strategies='recursive'
 default_octopus_strategies='octopus'
-no_trivial_merge_strategies='ours'
+no_trivial_merge_strategies='ours subtree'
 use_strategies=
 
 index_merge=t
@@ -88,11 +88,11 @@ finish () {
        '')
                ;;
        ?*)
-               case "$no_summary" in
-               '')
-                       git-diff-tree --stat --summary -M "$head" "$1"
-                       ;;
-               esac
+               if test "$show_diffstat" = t
+               then
+                       # We want color (if set), but no pager
+                       GIT_PAGER='' git-diff --stat --summary -M "$head" "$1"
+               fi
                ;;
        esac
 }
@@ -108,6 +108,10 @@ merge_name () {
                git-show-ref -q --verify "refs/heads/$truname" 2>/dev/null
        then
                echo "$rh               branch '$truname' (early part) of ."
+       elif test "$remote" = "FETCH_HEAD" -a -r "$GIT_DIR/FETCH_HEAD"
+       then
+               sed -e 's/      not-for-merge   /               /' -e 1q \
+                       "$GIT_DIR/FETCH_HEAD"
        else
                echo "$rh               commit '$remote'"
        fi
@@ -121,7 +125,9 @@ do
        case "$1" in
        -n|--n|--no|--no-|--no-s|--no-su|--no-sum|--no-summ|\
                --no-summa|--no-summar|--no-summary)
-               no_summary=t ;;
+               show_diffstat=false ;;
+       --summary)
+               show_diffstat=t ;;
        --sq|--squ|--squa|--squas|--squash)
                squash=t no_commit=t ;;
        --no-c|--no-co|--no-com|--no-comm|--no-commi|--no-commit)
@@ -163,6 +169,11 @@ do
        shift
 done
 
+if test -z "$show_diffstat"; then
+    test "$(git-config --bool merge.diffstat)" = false && show_diffstat=false
+    test -z "$show_diffstat" && show_diffstat=t
+fi
+
 # This could be traditional "merge <msg> HEAD <commit>..."  and the
 # way we can tell it is to see if the second token is HEAD, but some
 # people might have misused the interface and used a committish that
@@ -254,12 +265,15 @@ esac
 
 for s in $use_strategies
 do
-       case " $s " in
-       *" $no_trivial_merge_strategies "*)
-               index_merge=f
-               break
-               ;;
-       esac
+       for nt in $no_trivial_merge_strategies
+       do
+               case " $s " in
+               *" $nt "*)
+                       index_merge=f
+                       break
+                       ;;
+               esac
+       done
 done
 
 case "$#" in
@@ -289,9 +303,14 @@ f,*)
        # Again the most common case of merging one remote.
        echo "Updating $(git-rev-parse --short $head)..$(git-rev-parse --short $1)"
        git-update-index --refresh 2>/dev/null
+       msg="Fast forward"
+       if test -n "$have_message"
+       then
+               msg="$msg (no commit created; -m option ignored)"
+       fi
        new_head=$(git-rev-parse --verify "$1^0") &&
        git-read-tree -v -m -u --exclude-per-directory=.gitignore $head "$new_head" &&
-       finish "$new_head" "Fast forward"
+       finish "$new_head" "$msg" || exit
        dropsave
        exit 0
        ;;
@@ -316,7 +335,7 @@ f,*)
                then
                        echo "Wonderful."
                        result_commit=$(
-                               echo "$merge_msg" |
+                               printf '%s\n' "$merge_msg" |
                                git-commit-tree $result_tree -p HEAD -p "$1"
                        ) || exit
                        finish "$result_commit" "In-index merge"
@@ -421,7 +440,7 @@ done
 if test '' != "$result_tree"
 then
     parents=$(git-show-branch --independent "$head" "$@" | sed -e 's/^/-p /')
-    result_commit=$(echo "$merge_msg" | git-commit-tree $result_tree $parents) || exit
+    result_commit=$(printf '%s\n' "$merge_msg" | git-commit-tree $result_tree $parents) || exit
     finish "$result_commit" "Merge made by $wt_strategy."
     dropsave
     exit 0
@@ -460,7 +479,7 @@ else
        do
                echo $remote
        done >"$GIT_DIR/MERGE_HEAD"
-       echo "$merge_msg" >"$GIT_DIR/MERGE_MSG"
+       printf '%s\n' "$merge_msg" >"$GIT_DIR/MERGE_MSG"
 fi
 
 if test "$merge_was_ok" = t