Re: [RFC PATCH v3 2/9] Call git_rebase__interactive from run_specific_rebase

[Junio C Hamano <gitster@pobox.com>]

Wink Saville <wink@saville.com> writes:

> Instead of indirectly invoking git_rebase__interactive this invokes
> it directly after sourcing.
>
> Signed-off-by: Wink Saville <wink@saville.com>
> ---
>  git-rebase--interactive.sh | 11 -----------
>  git-rebase.sh              | 11 +++++++++--
>  2 files changed, 9 insertions(+), 13 deletions(-)
>
> diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh
> index 561e2660e..213d75f43 100644
> --- a/git-rebase--interactive.sh
> +++ b/git-rebase--interactive.sh
> @@ -740,15 +740,6 @@ get_missing_commit_check_level () {
>  	printf '%s' "$check_level" | tr 'A-Z' 'a-z'
>  }
>  
> -# 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.

We still enclose the whole thing (including the returns that are
problematic for older FreeBSD shells) in a shell function, so it's
not like we are dropping the workaround for these systems.  It's
just the caller of the function moved.

I think the removal of this large comment is justifiable, but the
structure still needs a bit of explanation, especially given that
the caller in git-rebase.sh needs to treat this scriptlet a bit
differently from others.

If we were not in the (longer term) process of getting rid of
git-rebase.sh, it might even make sense to port the same
"dot-sourced scriptlet defines a shell function to be called, and
the caller calls it after dot-sourcing it" pattern to other rebase
backends, so that the calling side can be unified again to become
something like:

	. git-rebase--$type
	git_rebase__$type
	ret=$?




>  git_rebase__interactive () {
>  
>  case "$action" in
> @@ -1029,5 +1020,3 @@ fi
>  do_rest
>  
>  }
> -# ... and then we call the whole thing.
> -git_rebase__interactive
> diff --git a/git-rebase.sh b/git-rebase.sh
> index a1f6e5de6..c4ec7c21b 100755
> --- a/git-rebase.sh
> +++ b/git-rebase.sh
> @@ -196,8 +196,15 @@ run_specific_rebase () {
>  		export GIT_EDITOR
>  		autosquash=
>  	fi
> -	. git-rebase--$type
> -	ret=$?
> +	if test "$type" = interactive
> +	then
> +		. git-rebase--interactive
> +		git_rebase__interactive
> +		ret=$?
> +	else
> +		. git-rebase--$type
> +		ret=$?
> +	fi
>  	if test $ret -eq 0
>  	then
>  		finish_rebase