Re: [PATCH] Highlight ANSI sequences in the whole buffer (was [PATCH] ANSI color on example blocks and fixed width elements)

[Ihor Radchenko]

Nathaniel Nicandro <nathanielnicandro@gmail.com> writes:

> The attached patch now uses `org-element-at-point' and
> `org-element-context' to query for the bounds of elements.

Thanks!

> Note, I've also attached an updated example file which shows that the
> escape sequences in inline source blocks are now handled similarly to
> regular source blocks, i.e. they are not fontified.

I do not think that a single exception - source blocks is good enough.
When having something like
  ANSI opening term is =<ANSI>=, and closing term is =<ANSI>=
it will be not expected to get things fontified.

A better approach will be:
1. Do not allow ANSI sequences to intersect markup boundaries of the
   same AST depth:
   *bold <ANSI>* plain text <ANSI> should not trigger fontification
   *bold <ANSI> /italic/ <ANSI>* should trigger
   plain text <ANSI> *bold* plain text <ANSI> also should
2. Disallow fontification is certain contexts - 'inline-src-block

Further, your current code will do something weird when encountering
greater element:

:DRAWER:
Paragraph <ANSI>

Another paragraph <ANSI>
:END:

You should not consider greater elements when fontifying.

> +        (cl-letf (((symbol-function #'delete-region)
> +                   (lambda (beg end)
> +                     (add-text-properties beg end '(invisible t))))

This is fragile and relies on internal implementation details of
ansi-color.el. Is there another way?

-- 
Ihor Radchenko // yantar92,
Org mode contributor,
Learn more about Org mode at <https://orgmode.org/>.
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