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From: "Paul D. Nelson" <ultrono@HIDDEN>
To: Rahguzar <rahguzar@HIDDEN>
Subject: Re: 14.0.9; Folding of math macros with a function spec is broken
In-Reply-To: <87cybjl81u.fsf@HIDDEN> (message from Rahguzar on Wed, 04
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Hi Rahguzar,
>>> (setq TeX-fold-math-spec-list `((,(lambda (text) (propertize text 'face '(underline))) ("underline"))))
>>
>> Is there a reason to prefer this vs. the same with
>> TeX-fold-macro-spec-list in place of TeX-fold-math-spec-list?
>
> The reason for why it is in TeX-fold-math-spec-list is that when I
> started with Emacs I stole it from Tecosaur's config. There are quite a
> few function specs in my TeX-fold-math-spec-list e.g. for sqrt, frac,
> mathcal, mathfrak and mathbb etc and most of them are relevant only for
> math. Should they be moved to TeX-fold-macro-spec-list?
I think one can use TeX-fold-macro-spec-list for all of these. In
particular, your underline example works fine there for me.
It's not clear to me from those what exactly are the intended purposes
of the various spec lists (macro/env/math). My impression from the
built-in examples was that the math list is for macros like "alpha" that
accept no arguments.
The motivation for the offending patch was to make it so folding "\in
[0, 1]" doesn't hide the "[0, 1]" as if it were an optional arg. To
give a more robust fix that works with your code sample, we would need a
more robust way to detect when a macro is not intended to have any
(optional) arguments. The implemented approach was to just assume that
all the "math" macros accept no arguments. Do you or does anyone have
other suggestions?
Paul
bug-auctex@HIDDEN:bug#78696; Package auctex.
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From: Rahguzar <rahguzar@HIDDEN>
To: "Paul D. Nelson" <ultrono@HIDDEN>
Subject: Re: 14.0.9; Folding of math macros with a function spec is broken
In-Reply-To: <uxsg7tzfenvluf.fsf@HIDDEN> (Paul D. Nelson's message of "Wed,
04 Jun 2025 12:32:08 +0200")
References: <uxsg7tzfenvluf.fsf@HIDDEN>
Date: Wed, 04 Jun 2025 22:40:13 +0500
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Hi Paul,
"Paul D. Nelson" <ultrono@HIDDEN> writes:
> Thanks Raghuzar. The issue is the result of this change:
>
> --8<---------------cut here---------------start------------->8---
> diff --git a/tex-fold.el b/tex-fold.el
> index 766270ef..78e5b822 100644
> --- a/tex-fold.el
> +++ b/tex-fold.el
> @@ -901,6 +901,12 @@ TYPE can be either `env' for environments, `macro' for macros or
> (goto-char (1+ start))
> (LaTeX-find-matching-end)
> (point))
> + ((eq type 'math)
> + (goto-char (1+ start))
> + (if (zerop (skip-chars-forward "A-Za-z@"))
> + (forward-char)
> + (skip-chars-forward "*"))
> + (point))
> (t
> (goto-char start)
> (TeX-find-macro-end)))))
> --8<---------------cut here---------------end--------------->8---
>
> The intent here was that "math macros" built-in to tex-fold don't take
> arguments, but this is not the case for the custom one you provide.
>
>> (setq TeX-fold-math-spec-list `((,(lambda (text) (propertize text 'face '(underline))) ("underline"))))
>
> Is there a reason to prefer this vs. the same with
> TeX-fold-macro-spec-list in place of TeX-fold-math-spec-list?
The reason for why it is in TeX-fold-math-spec-list is that when I
started with Emacs I stole it from Tecosaur's config. There are quite a
few function specs in my TeX-fold-math-spec-list e.g. for sqrt, frac,
mathcal, mathfrak and mathbb etc and most of them are relevant only for
math. Should they be moved to TeX-fold-macro-spec-list?
> Paul
Rahguzar <rahguzar@HIDDEN>:bug-auctex@HIDDEN.
Full text available.bug-auctex@HIDDEN:bug#78696; Package auctex.
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