On 23/10/2023 19:09, Ihor Radchenko wrote:
>>>>>> +           (if (string-match-p "\\`\u200b*\\[.*\\]\u200b*\\'" anchor)
>>>>>> +               anchor
>>>>>> +	     (format "[%s]" anchor))
> 
> I did not mean unrelated to ox-ascii. I meant unrelated to "add new
> feature allowing more flexibility for :export property of links when
> exporting to ASCII".

Since "ox-ascii.el: Consistently add brackets around links" has been 
committed, this regexp is not necessary to preserve inconsistencies in 
link formatting. Avoiding duplication of brackets was just a bonus.

See next version of the draft. Functions are still not documented.

`cons' is made an implementation detail, however completely opaque 
structure is an obstacle for derived export backend. Perhaps getter 
functions should be introduced as well.