Merge branch 'maint'

[git.git] / git-merge.sh

diff --git a/git-merge.sh b/git-merge.sh
index 3a01db0d751e272541efd0f27177a9ca5cb63bbe..c2092a204035ad0315a3d37ed2f70097e68ed052 100755 (executable)
--- a/git-merge.sh
+++ b/git-merge.sh
@@ -3,7 +3,7 @@
 # Copyright (c) 2005 Junio C Hamano
 #
 
-USAGE='[-n] [--summary] [--no-commit] [--squash] [-s <strategy>] [-m=<merge-message>] <commit>+'
+USAGE='[-n] [--summary] [--[no-]commit] [--[no-]squash] [--[no-]ff] [-s <strategy>] [-m=<merge-message>] <commit>+'
 
 SUBDIRECTORY_OK=Yes
 . git-sh-setup
@@ -59,7 +59,7 @@ finish_up_to_date () {
 squash_message () {
        echo Squashed commit of the following:
        echo
-       git log --no-merges ^"$head" $remote
+       git log --no-merges ^"$head" $remoteheads
 }
 
 finish () {
@@ -82,6 +82,7 @@ finish () {
                        ;;
                *)
                        git update-ref -m "$rlogm" HEAD "$1" "$head" || exit 1
+                       git gc --auto
                        ;;
                esac
                ;;
@@ -97,6 +98,19 @@ finish () {
                fi
                ;;
        esac
+
+       # Run a post-merge hook
+        if test -x "$GIT_DIR"/hooks/post-merge
+        then
+           case "$squash" in
+           t)
+                "$GIT_DIR"/hooks/post-merge 1
+               ;;
+           '')
+                "$GIT_DIR"/hooks/post-merge 0
+               ;;
+           esac
+        fi
 }
 
 merge_name () {
@@ -119,11 +133,7 @@ merge_name () {
        fi
 }
 
-case "$#" in 0) usage ;; esac
-
-have_message=
-while case "$#" in 0) break ;; esac
-do
+parse_option () {
        case "$1" in
        -n|--n|--no|--no-|--no-s|--no-su|--no-sum|--no-summ|\
                --no-summa|--no-summar|--no-summary)
@@ -131,9 +141,17 @@ do
        --summary)
                show_diffstat=t ;;
        --sq|--squ|--squa|--squas|--squash)
-               squash=t no_commit=t ;;
+               allow_fast_forward=t squash=t no_commit=t ;;
+       --no-sq|--no-squ|--no-squa|--no-squas|--no-squash)
+               allow_fast_forward=t squash= no_commit= ;;
+       --c|--co|--com|--comm|--commi|--commit)
+               allow_fast_forward=t squash= no_commit= ;;
        --no-c|--no-co|--no-com|--no-comm|--no-commi|--no-commit)
-               no_commit=t ;;
+               allow_fast_forward=t squash= no_commit=t ;;
+       --ff)
+               allow_fast_forward=t squash= no_commit= ;;
+       --no-ff)
+               allow_fast_forward=false squash= no_commit= ;;
        -s=*|--s=*|--st=*|--str=*|--stra=*|--strat=*|--strate=*|\
                --strateg=*|--strategy=*|\
        -s|--s|--st|--str|--stra|--strat|--strate|--strateg|--strategy)
@@ -166,9 +184,42 @@ do
                have_message=t
                ;;
        -*)     usage ;;
-       *)      break ;;
+       *)      return 1 ;;
        esac
        shift
+       args_left=$#
+}
+
+parse_config () {
+       while test $# -gt 0
+       do
+               parse_option "$@" || usage
+               while test $args_left -lt $#
+               do
+                       shift
+               done
+       done
+}
+
+test $# != 0 || usage
+
+have_message=
+
+if branch=$(git-symbolic-ref -q HEAD)
+then
+       mergeopts=$(git config "branch.${branch#refs/heads/}.mergeoptions")
+       if test -n "$mergeopts"
+       then
+               parse_config $mergeopts
+       fi
+fi
+
+while parse_option "$@"
+do
+       while test $args_left -lt $#
+       do
+               shift
+       done
 done
 
 if test -z "$show_diffstat"; then
@@ -444,7 +495,13 @@ done
 # auto resolved the merge cleanly.
 if test '' != "$result_tree"
 then
-    parents=$(git show-branch --independent "$head" "$@" | sed -e 's/^/-p /')
+    if test "$allow_fast_forward" = "t"
+    then
+        parents=$(git show-branch --independent "$head" "$@")
+    else
+        parents=$(git rev-parse "$head" "$@")
+    fi
+    parents=$(echo "$parents" | sed -e 's/^/-p /')
     result_commit=$(printf '%s\n' "$merge_msg" | git commit-tree $result_tree $parents) || exit
     finish "$result_commit" "Merge made by $wt_strategy."
     dropsave