Merge branch 'js/rebase-i'
[gitweb.git] / git-merge.sh
index 981d69d35f4e6349d99192996af3b793071a6172..bf18f582da53200fb422bf35c85c1f05c5f7c88d 100755 (executable)
@@ -19,10 +19,12 @@ LF='
 all_strategies='recur recursive octopus resolve stupid ours subtree'
 default_twohead_strategies='recursive'
 default_octopus_strategies='octopus'
-no_trivial_merge_strategies='ours subtree'
+no_fast_forward_strategies='subtree ours'
+no_trivial_strategies='recursive recur subtree ours'
 use_strategies=
 
-index_merge=t
+allow_fast_forward=t
+allow_trivial_merge=t
 
 dropsave() {
        rm -f -- "$GIT_DIR/MERGE_HEAD" "$GIT_DIR/MERGE_MSG" \
@@ -31,7 +33,7 @@ dropsave() {
 
 savestate() {
        # Stash away any local modifications.
-       git-diff-index -z --name-only $head |
+       git diff-index -z --name-only $head |
        cpio -0 -o >"$GIT_DIR/MERGE_SAVE"
 }
 
@@ -40,7 +42,7 @@ restorestate() {
        then
                git reset --hard $head >/dev/null
                cpio -iuv <"$GIT_DIR/MERGE_SAVE"
-               git-update-index --refresh >/dev/null
+               git update-index --refresh >/dev/null
        fi
 }
 
@@ -57,7 +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" $remote
 }
 
 finish () {
@@ -79,7 +81,8 @@ finish () {
                        echo "No merge message -- not updating HEAD"
                        ;;
                *)
-                       git-update-ref -m "$rlogm" HEAD "$1" "$head" || exit 1
+                       git update-ref -m "$rlogm" HEAD "$1" "$head" || exit 1
+                       git gc --auto
                        ;;
                esac
                ;;
@@ -91,21 +94,34 @@ finish () {
                if test "$show_diffstat" = t
                then
                        # We want color (if set), but no pager
-                       GIT_PAGER='' git-diff --stat --summary -M "$head" "$1"
+                       GIT_PAGER='' git diff --stat --summary -M "$head" "$1"
                fi
                ;;
        esac
+
+       # Run a post-merge hook
+        if test -x "$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 () {
        remote="$1"
-       rh=$(git-rev-parse --verify "$remote^0" 2>/dev/null) || return
-       bh=$(git-show-ref -s --verify "refs/heads/$remote" 2>/dev/null)
+       rh=$(git rev-parse --verify "$remote^0" 2>/dev/null) || return
+       bh=$(git show-ref -s --verify "refs/heads/$remote" 2>/dev/null)
        if test "$rh" = "$bh"
        then
                echo "$rh               branch '$remote' of ."
        elif truname=$(expr "$remote" : '\(.*\)~[1-9][0-9]*$') &&
-               git-show-ref -q --verify "refs/heads/$truname" 2>/dev/null
+               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 "$GIT_DIR/FETCH_HEAD"
@@ -120,7 +136,7 @@ merge_name () {
 case "$#" in 0) usage ;; esac
 
 have_message=
-while case "$#" in 0) break ;; esac
+while test $# != 0
 do
        case "$1" in
        -n|--n|--no|--no-|--no-s|--no-su|--no-sum|--no-summ|\
@@ -170,7 +186,7 @@ do
 done
 
 if test -z "$show_diffstat"; then
-    test "$(git-config --bool merge.diffstat)" = false && show_diffstat=false
+    test "$(git config --bool merge.diffstat)" = false && show_diffstat=false
     test -z "$show_diffstat" && show_diffstat=t
 fi
 
@@ -181,15 +197,15 @@ fi
 # have "-m" so it is an additional safety measure to check for it.
 
 if test -z "$have_message" &&
-       second_token=$(git-rev-parse --verify "$2^0" 2>/dev/null) &&
-       head_commit=$(git-rev-parse --verify "HEAD" 2>/dev/null) &&
+       second_token=$(git rev-parse --verify "$2^0" 2>/dev/null) &&
+       head_commit=$(git rev-parse --verify "HEAD" 2>/dev/null) &&
        test "$second_token" = "$head_commit"
 then
        merge_msg="$1"
        shift
        head_arg="$1"
        shift
-elif ! git-rev-parse --verify HEAD >/dev/null 2>&1
+elif ! git rev-parse --verify HEAD >/dev/null 2>&1
 then
        # If the merged head is a valid one there is no reason to
        # forbid "git merge" into a branch yet to be born.  We do
@@ -203,8 +219,8 @@ then
        rh=$(git rev-parse --verify "$1^0") ||
                die "$1 - not something we can merge"
 
-       git-update-ref -m "initial pull" HEAD "$rh" "" &&
-       git-read-tree --reset -u HEAD
+       git update-ref -m "initial pull" HEAD "$rh" "" &&
+       git read-tree --reset -u HEAD
        exit
 
 else
@@ -219,11 +235,11 @@ else
        merge_name=$(for remote
                do
                        merge_name "$remote"
-               done | git-fmt-merge-msg
+               done | git fmt-merge-msg
        )
        merge_msg="${merge_msg:+$merge_msg$LF$LF}$merge_name"
 fi
-head=$(git-rev-parse --verify "$head_arg"^0) || usage
+head=$(git rev-parse --verify "$head_arg"^0) || usage
 
 # All the rest are remote heads
 test "$#" = 0 && usage ;# we need at least one remote head.
@@ -232,7 +248,7 @@ set_reflog_action "merge $*"
 remoteheads=
 for remote
 do
-       remotehead=$(git-rev-parse --verify "$remote"^0 2>/dev/null) ||
+       remotehead=$(git rev-parse --verify "$remote"^0 2>/dev/null) ||
            die "$remote - not something we can merge"
        remoteheads="${remoteheads}$remotehead "
        eval GITHEAD_$remotehead='"$remote"'
@@ -244,7 +260,7 @@ case "$use_strategies" in
 '')
        case "$#" in
        1)
-               var="`git-config --get pull.twohead`"
+               var="`git config --get pull.twohead`"
                if test -n "$var"
                then
                        use_strategies="$var"
@@ -252,7 +268,7 @@ case "$use_strategies" in
                        use_strategies="$default_twohead_strategies"
                fi ;;
        *)
-               var="`git-config --get pull.octopus`"
+               var="`git config --get pull.octopus`"
                if test -n "$var"
                then
                        use_strategies="$var"
@@ -265,11 +281,20 @@ esac
 
 for s in $use_strategies
 do
-       for nt in $no_trivial_merge_strategies
+       for ss in $no_fast_forward_strategies
        do
                case " $s " in
-               *" $nt "*)
-                       index_merge=f
+               *" $ss "*)
+                       allow_fast_forward=f
+                       break
+                       ;;
+               esac
+       done
+       for ss in $no_trivial_strategies
+       do
+               case " $s " in
+               *" $ss "*)
+                       allow_trivial_merge=f
                        break
                        ;;
                esac
@@ -278,18 +303,15 @@ done
 
 case "$#" in
 1)
-       common=$(git-merge-base --all $head "$@")
+       common=$(git merge-base --all $head "$@")
        ;;
 *)
-       common=$(git-show-branch --merge-base $head "$@")
+       common=$(git show-branch --merge-base $head "$@")
        ;;
 esac
 echo "$head" >"$GIT_DIR/ORIG_HEAD"
 
-case "$index_merge,$#,$common,$no_commit" in
-f,*)
-       # We've been told not to try anything clever.  Skip to real merge.
-       ;;
+case "$allow_fast_forward,$#,$common,$no_commit" in
 ?,*,'',*)
        # No common ancestors found. We need a real merge.
        ;;
@@ -299,17 +321,17 @@ f,*)
        finish_up_to_date "Already up-to-date."
        exit 0
        ;;
-?,1,"$head",*)
+t,1,"$head",*)
        # 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
+       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" &&
+       new_head=$(git rev-parse --verify "$1^0") &&
+       git read-tree -v -m -u --exclude-per-directory=.gitignore $head "$new_head" &&
        finish "$new_head" "$msg" || exit
        dropsave
        exit 0
@@ -321,22 +343,19 @@ f,*)
 ?,1,*,)
        # We are not doing octopus, not fast forward, and have only
        # one common.
-       git-update-index --refresh 2>/dev/null
-       case " $use_strategies " in
-       *' recursive '*|*' recur '*)
-               : run merge later
-               ;;
-       *)
+       git update-index --refresh 2>/dev/null
+       case "$allow_trivial_merge" in
+       t)
                # See if it is really trivial.
                git var GIT_COMMITTER_IDENT >/dev/null || exit
                echo "Trying really trivial in-index merge..."
-               if git-read-tree --trivial -m -u -v $common $head "$1" &&
-                  result_tree=$(git-write-tree)
+               if git read-tree --trivial -m -u -v $common $head "$1" &&
+                  result_tree=$(git write-tree)
                then
                        echo "Wonderful."
                        result_commit=$(
                                printf '%s\n' "$merge_msg" |
-                               git-commit-tree $result_tree -p HEAD -p "$1"
+                               git commit-tree $result_tree -p HEAD -p "$1"
                        ) || exit
                        finish "$result_commit" "In-index merge"
                        dropsave
@@ -350,7 +369,7 @@ f,*)
        up_to_date=t
        for remote
        do
-               common_one=$(git-merge-base --all $head $remote)
+               common_one=$(git merge-base --all $head $remote)
                if test "$common_one" != "$remote"
                then
                        up_to_date=f
@@ -419,8 +438,8 @@ do
        if test "$exit" -eq 1
        then
            cnt=`{
-               git-diff-files --name-only
-               git-ls-files --unmerged
+               git diff-files --name-only
+               git ls-files --unmerged
            } | wc -l`
            if test $best_cnt -le 0 -o $cnt -le $best_cnt
            then
@@ -432,15 +451,15 @@ do
     }
 
     # Automerge succeeded.
-    result_tree=$(git-write-tree) && break
+    result_tree=$(git write-tree) && break
 done
 
 # If we have a resulting tree, that means the strategy module
 # auto resolved the merge cleanly.
 if test '' != "$result_tree"
 then
-    parents=$(git-show-branch --independent "$head" "$@" | sed -e 's/^/-p /')
-    result_commit=$(printf '%s\n' "$merge_msg" | git-commit-tree $result_tree $parents) || exit
+    parents=$(git show-branch --independent "$head" "$@" | sed -e 's/^/-p /')
+    result_commit=$(printf '%s\n' "$merge_msg" | git commit-tree $result_tree $parents) || exit
     finish "$result_commit" "Merge made by $wt_strategy."
     dropsave
     exit 0
@@ -496,9 +515,6 @@ Conflicts:
                sed -e 's/^[^   ]*      /       /' |
                uniq
        } >>"$GIT_DIR/MERGE_MSG"
-       if test -d "$GIT_DIR/rr-cache"
-       then
-               git-rerere
-       fi
+       git rerere
        die "Automatic merge failed; fix conflicts and then commit the result."
 fi