# This shell script fragment is sourced by git-rebase to implement
# its default, fast, patch-based, non-interactive mode.
#
# Copyright (c) 2010 Junio C Hamano.
#

# 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.
proc git_rebase__am {

match $action {
with continue
	git am --resolved --resolvemsg="$resolvemsg" \
		$(gpg_sign_opt:+"$gpg_sign_opt") &&
	move_to_original_branch
	return
	
with skip
	git am --skip --resolvemsg="$resolvemsg" &&
	move_to_original_branch
	return
	
}

if test -z $rebase_root
	# this is now equivalent to ! -z "$upstream"
{
	setglobal revisions = "$upstream...$orig_head"
} else {
	setglobal revisions = "$onto...$orig_head"
}

setglobal ret = '0'
if test -n $keep_empty
{
	# we have to do this the hard way.  git format-patch completely squashes
	# empty commits and even if it didn't the format doesn't really lend
	# itself well to recording empty patches.  fortunately, cherry-pick
	# makes this easy
	git cherry-pick $(gpg_sign_opt:+"$gpg_sign_opt") --allow-empty \
		--right-only $revisions \
		$(restrict_revision+^$restrict_revision)
	setglobal ret = $Status
} else {
	rm -f "$GIT_DIR/rebased-patches"

	git format-patch -k --stdout --full-index --cherry-pick --right-only \
		--src-prefix=a/ --dst-prefix=b/ --no-renames --no-cover-letter \
		$revisions $(restrict_revision+^$restrict_revision) \
		>"$GIT_DIR/rebased-patches"
	setglobal ret = $Status

	if test 0 != $ret
	{
		rm -f "$GIT_DIR/rebased-patches"
		match $head_name {
		with refs/heads/*
			git checkout -q $head_name
			
		with *
			git checkout -q $orig_head
			
		}

		cat > !2 << """

git encountered an error while preparing the patches to replay
these revisions:

    $revisions

As a result, git cannot rebase them.
"""
		return $ret
	}

	git am $git_am_opt --rebasing --resolvemsg="$resolvemsg" \
		$(gpg_sign_opt:+"$gpg_sign_opt") <"$GIT_DIR/rebased-patches"
	setglobal ret = $Status

	rm -f "$GIT_DIR/rebased-patches"
}

if test 0 != $ret
{
	test -d $state_dir && write_basic_state
	return $ret
}

move_to_original_branch

}
# ... and then we call the whole thing.
git_rebase__am