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

[Nathaniel Nicandro <nathanielnicandro@gmail.com>]

Ihor Radchenko <yantar92@posteo.net> writes:

> It runs fine on my side, although I am not sure if things are working as
> expected for all the cases. For example, headlines never got fontified
> on my side when I tried your patch on top of the latest main branch.

Yes, the headlines are currently not fontified since, with this patch, I
was mainly looking to satisfy the initial set of rules you laid out
which didn't mention headlines as being a fontifiable element for ANSI
sequences, or at least I didn't get that from my reading of them.

It does make sense, however, to be able to add headlines to the
`org-ansi-highlightable-elements` variable so that they are fontified if
the user wishes.  Although doing so with this patch wouldn't work.

> Also, it looks like you simply made the ASCII sequences invisible, which
> causes funky behaviour when trying to edit the text around. What we may
> need instead is something similar to hidden parts of the links that get
> revealed when we try to edit the invisible text. See
> `org-catch-invisible-edits' variable and the functions that examine it.

I agree that we should reveal the invisible sequence when trying to edit
it.

Thanks for the tip about `org-catch-invisible-edits', it led me to
`org-fold-show-set-visibility' which I think is the appropriate place to
reveal a hidden sequence.

> You may use `org-fontify-extend-region' to handle such scenarios if you
> mark the ANSI highlights with a special text property.

Thanks for the tip, I'll look into it.

-- 
Nathaniel