t4008: abstract away SHA-1-specific constants

diff --git a/git-rebase--merge.sh b/git-rebase--merge.sh
index 9a60cef05251d25be9112f8c58c344c892b0ea9a..cf4c0422148935906ad939c5351652a1531e5f0d 100644 (file)
--- a/git-rebase--merge.sh
+++ b/git-rebase--merge.sh
@@ -27,7 +27,8 @@ continue_merge () {
        cmt=$(cat "$state_dir/current")
        if ! git diff-index --quiet --ignore-submodules HEAD --
        then
-               if ! git commit ${gpg_sign_opt:+"$gpg_sign_opt"} $signoff --no-verify -C "$cmt"
+               if ! git commit ${gpg_sign_opt:+"$gpg_sign_opt"} $signoff $allow_empty_message \
+                       --no-verify -C "$cmt"
                then
                        echo "Commit failed, please do not call \"git commit\""
                        echo "directly, but instead do one of the following: "
@@ -57,6 +58,7 @@ call_merge () {
        echo "$msgnum" >"$state_dir/msgnum"
        cmt="$(cat "$state_dir/cmt.$msgnum")"
        echo "$cmt" > "$state_dir/current"
+       git update-ref REBASE_HEAD "$cmt"
        hd=$(git rev-parse --verify HEAD)
        cmt_name=$(git symbolic-ref HEAD 2> /dev/null || echo HEAD)
        eval GITHEAD_$cmt='"${cmt_name##refs/heads/}~$(($end - $msgnum))"'
@@ -102,15 +104,6 @@ finish_rb_merge () {
        say All done.
 }
 
-# The whole contents of this file is run by dot-sourcing it from
-# inside a shell function.  It used to be that "return"s we see
-# below were not inside any function, and expected to return
-# to the function that dot-sourced us.
-#
-# However, older (9.x) versions of FreeBSD /bin/sh misbehave on such a
-# construct and continue to run the statements that follow such a "return".
-# As a work-around, we introduce an extra layer of a function
-# here, and immediately call it after defining it.
 git_rebase__merge () {
 
 case "$action" in
@@ -137,11 +130,15 @@ skip)
        finish_rb_merge
        return
        ;;
+show-current-patch)
+       exec git show REBASE_HEAD --
+       ;;
 esac
 
 mkdir -p "$state_dir"
 echo "$onto_name" > "$state_dir/onto_name"
 write_basic_state
+rm -f "$(git rev-parse --git-path REBASE_HEAD)"
 
 msgnum=0
 for cmt in $(git rev-list --reverse --no-merges "$revisions")
@@ -165,5 +162,3 @@ done
 finish_rb_merge
 
 }
-# ... and then we call the whole thing.
-git_rebase__merge