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Syntax classes of text in href

From: Al Haji-Ali
Subject: Syntax classes of text in href
Date: Wed, 11 Jan 2023 10:44:08 +0000

If I have the following text in a LaTeX buffer:

\href{ \cmd{test} }

The opening brace of href has syntax class 15 (for generic delimiter?), tested 
by calling `(syntax-after (point))`. While the closing brace seems to have 
syntax class 5 (for closed delimiter). Strangely, the opening brace of cmd has 
the syntax class of 4 (opening delimiter) while the closing one has syntax 
class of 15 again (for generic delimiter).

The result is that modes like `show-paren-mode` or `rainbow-delimiters` show 
the braces as mismatched even though that's not the case. Calling `(scan-sexps 
(point) 1)` on the opening brace of cmd also throws the error "Unbalanced 

In a simpler command like


the syntax classes of both the opening and closing braces is generic delimiter. 
Even though I would argue that they should be opening/closed delimiters, at 
least there are no mismatched delimiters.

I can remove `\href` from `LaTeX-verbatim-macros-with-braces` and call 
`font-latex-set-syntactic-keywords` to get the braces to match, but I am 
wondering if there's a better solution.

Best regards,
-- Al

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