Re: [PATCH] org-export: Remove zero-width space escapes during export

[Max Nikulin <manikulin@gmail.com>]

On 26/07/2022 19:59, Ihor Radchenko wrote:
> 
> This is a bug. While escape symbols do not affect export in most common
> scenarios, your report is adding yet another case when zero-width space
> is actually altering the export result.

I agree is zero-width space used as an escape character is too 
intrusive. It adds stray line breakpoints, it may be unwanted during 
copy&paste of text, especially if such text is code or a command.

> I am attaching a tentative patch that will make Org export remove
> zero-width spaces when those spaces actually separate the object
> boundaries.
> 
> Any objections?

I think, you broke a valid use case when zero width space allows to wrap 
objects in the case of narrow page

[[unicorn-1.jpg]]​[[unicorn-2.jpg]]​[[unicorn-3.jpg]]​[[unicorn-4.jpg]]

It was briefly discussed, see
https://list.orgmode.org/874k7qboaq.fsf@nicolasgoaziou.fr/
Nicolas Goaziou. Re: Org-syntax: Intra-word markup. Fri, 03 Dec 2021 
00:05:33 +0100

> The idea was indeed inspired by Markdown.
> However, Markdown is different - **bold** is the official syntax to
> indicate bold markup.

Or by asciidoc 
https://list.orgmode.org/1ef0e093-c165-2a5f-954d-6a33b64c8ee9@mailbox.org/

> +        (setq processed-string
> +              (replace-regexp-in-string "\\`​" "" string))
> +        (setq processed-string
> +              (replace-regexp-in-string "​\\'" "" processed-string))

Please, use \u200B instead of the invisible character.
info "(elisp) Non-ASCII Characters in Strings"
https://www.gnu.org/software/emacs/manual/html_node/elisp/Non_002dASCII-in-Strings.html