Re: migrating to the snapshot api

[Sam Halliday <sam.halliday@gmail.com>]

Apologies for bumping this, I was wondering if anybody had any more
thoughts on migrating this backend to the latest version of org-mode?
Seems to be something changed that isn't in the migration notes...

On 21 August 2017 at 19:21, Sam Halliday <sam.halliday@gmail.com> wrote:
> Hi all,
>
> I maintain a fork of an org-mode backend for a markdown based
> publishing format
> https://github.com/fommil/dotfiles/blob/master/.emacs.d/lisp/ox-leanpub.el
>
> Which works great for the org-mode that ships with emacs 25.2.
>
> However, when I use the latest org-mode from the snapshots on even the
> most simple of files, e.g. the one line
>
> ==========
> Wibble wibble I'm a fish
> ==========
>
> I get a stacktrace like this (huge amount of data elided)
>
> ==========
> Debugger entered--Lisp error: (wrong-type-argument sequencep :back-end)
>   mapc(#[
>   mapc(#[
>   org-element-map(
>   org-export--footnote-reference-map(
>   org-export-collect-footnote-definitions(
>   org-leanpub-inner-template(
>   org-export-as(leanpub nil nil nil nil)
>   org-export-to-buffer(leanpub "*Org LEANPUB Export*" nil nil nil nil
> nil (lambda nil (text-mode)))
>   org-leanpub-export-as-markdown()
>   funcall-interactively(org-leanpub-export-as-markdown)
>   call-interactively(org-leanpub-export-as-markdown record nil)
>   command-execute(org-leanpub-export-as-markdown record)
>   execute-extended-command(nil "org-leanpub-export-as-markdown" nil)
>   funcall-interactively(execute-extended-command nil
> "org-leanpub-export-as-markdown" nil)
>   call-interactively(execute-extended-command nil nil)
>   command-execute(execute-extended-command)
> ==========
>
> From reading http://orgmode.org/Changes.html#org1e55804 I can see that
> I am supposed to remove the :export-block, which I have done locally.
>
> Can anybody see what else I need to change to be compatible with the
> latest version?
>
> Best regards,
> Sam