[PATCH v2 1/6] Add luaL_iscallable with support of cdata metatype

[Vladimir Davydov]

On Wed, Jan 09, 2019 at 11:20:09PM +0300, Alexander Turenko wrote:
> Needed for #3276.
> ---
>  extra/exports                    |  1 +
>  src/lua/utils.c                  | 43 ++++++++++++++++
>  src/lua/utils.h                  | 10 ++++
>  test/app-tap/module_api.c        | 10 ++++
>  test/app-tap/module_api.test.lua | 85 +++++++++++++++++++++++++++++++-
>  5 files changed, 147 insertions(+), 2 deletions(-)

This patch looks OK to me, but I'm not sure if you'll need it after you
rework the merger API. So I'm not applying it now.