Re: [O] getting access to a self-invented option?

[Berry, Charles]

Matt,

See inline.

> On Aug 7, 2019, at 8:36 AM, Matt Price <address@hidden> wrote
> 
> 
> On Sat, Aug 3, 2019 at 1:42 PM Berry, Charles <address@hidden> wrote:
> Matt,
> 
> This seems like a good use case for a `derived-backend'.
> 
> You can use  `org-export-define-derived-backend' with 'hugo as the parent, 
> define a :menu-entry to add an export action for your custom export to the 
> hugo menu using '?m' (say) as the key.
> 
> Then 
> 
>         C-c C-e H m
> 
> will export using your custom variant of hugo.
> 
> :-) I'm trying to use the variable to determine whether I export with hugo or 
> with my hugo-reveal franken-backend: 
> https://github.com/titaniumbones/ox-huveal . So my preference is to evaluate 
> the variable BEFORE export begins. 

But `org-export-as' doesn't execute until the dispatcher has run and the choice 
of hugo or hugo-reveal has been made. 

However, if this determination is permanently set for a particular file (you 
only export in one manner according to the variable and never alter the 
variable), then see below.


> 
> I guess another option is to just set a buffer-local variable in the file, or 
> use #+FILETAGS: and hack htings that way. I'm not sure what the most 
> sustainable & org-like method relaly is... 
> 

The obvious choice for a local file setting is an OPTION. Since your 'huveal 
backend already has an :options-alist, you can just add another option for 
`:mwp-export-type' there. If you want access to the value before 
`org-export-as' runs, try something like 

        (plist-get (org-export-get-environment) :mwp-export-type) 


HTH,

Chuck