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From: =?utf-8?Q?Bj=C3=B6rn?= Bidar <bjorn.bidar@thaodan.de>
To: arthur miller <arthur.miller@live.com>
Cc: Ihor Radchenko <yantar92@posteo.net>,  "emacs-devel@gnu.org"
 <emacs-devel@gnu.org>,  "emacs-orgmode@gnu.org" <emacs-orgmode@gnu.org>
Subject: Re: Sv: Modularizing Org as GSoC project
In-Reply-To: <DU2PR02MB101099F300A125A197929B4EF968E2@DU2PR02MB10109.eurprd02.prod.outlook.com>
 (arthur miller's message of "Wed, 21 Aug 2024 02:45:14 +0000")
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arthur miller <arthur.miller@live.com> writes:

>>> For example turn displaying pretty text (bold, italics etc), pretty links,
>>> tables, dates, and perhaps some other stuff into, from Org-mode, independent,
>>> minor modes that could be used in other parts of Emacs and more independently
>>> of
>>> Org mode. I think both Org-mode and Hyperbole, and perhaps some other
>>> libraries
>>> (button.el, help-mode, info), could use some minor mode that works with
>>> links. For us users, it would mean less cruft loaded into Emacs, if those big
>>> players could share some code.
>>>
>>> I haven't done much research on this, just something I had in my head for a
>>> long
>>> time.
>>
>>I would like to hear in more details what you have in mind. As is, your
>>proposal appears to be for multiple projects. Or am I mistaken?
>>
>>For links in particular, Hyperbole already implements the described
>>minor mode, or what am I missing?
>>
>>For tables, dates, and other markup, it is not clear what you want to
>>achieve.
>
> To be honest I am not sure myself :)
>
>>         Do you want Org markup to be displayed in non-Org buffers?
>
> Well, part of it. Or more to make some parts of org-markup configurable, and
> usable as minor modes so they can be easier used outside of org-mode.
>
> For example about links, there could be a mode "text-link-mode" or
> "pretty-links-mode" or something, that understands what a link description is,
> and what a link itself is. The minor mode would have some mean to parse
> description and link parts, and when on it would do what org-toggle-link-display
> does. For example org uses angle brackets for link desc and url, whereas
> markdown uses angle brackets and parenthesis. Thus link-mode could/should be
> enough customizable so that modes could be clients of this minor mode, as well
> as for user to be able to setup a regex or set a function that recognizes some
> custom syntax for descriptions and links. Also a minor mode can come with a key
> map and some actions, for example to follow link, to insert a link etc. I think
> of org-links, but a bit more generalized and usable without org-mode
> itself. Org-mode could use those under the hood.

I think this is very much related to a similar problem that
bug-reference-mode tries to solve.
Certain patterns can mean certain things, does something match the
pattern -> buttonize.

Most modes roll their own thing of such a system e.g. Circe, Gnus,
Bug-reference-mode.
If there was a generalized system it could make it easier to configure.

The caveat is that some modes could have trouble using a generalized
solution for this either because of their own historic structure
(e.g. Gnus) or because it does not work for a specific modes structure
e.g. when  the link contains mode specific syntax.

E.g. Org-Links with ID properties would not work unless properties are
understood by other modes, much is woven into the org structure.

I think the best solution would be to add generalized helper functions
that modes can use but not to try to intercept the modes inner workings
by adding a custom mode on top.
However in instances where there is no special markup such a minor-mode
could work and would be very helpful to support instances where there's
a syntax in a syntax such as in programming comment lines.

Sooner or later this will get us to having another Outline or Outshine
mode.