Re: Hyphen after LaTeX fragments

[Ihor Radchenko <yantar92@posteo.net>]

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Yuchen Guo <yuchen@apvc.uk> writes:

> If it is deprecated in Org mode, maybe we can print a warning message in
> echo area?

Not in echo area, but we can add a linter.


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From 129e3aa03229fd2e5dd6ea9bf627e4d95a061744 Mon Sep 17 00:00:00 2001
Message-Id: <129e3aa03229fd2e5dd6ea9bf627e4d95a061744.1679488572.git.yantar92@posteo.net>
From: Ihor Radchenko <yantar92@posteo.net>
Date: Wed, 22 Mar 2023 13:35:22 +0100
Subject: [PATCH] org-lint: Add checker for $...$ LaTeX fragments

* lisp/org-lint.el (org-lint-LaTeX-$): New checker warning about
semi-obsolete $...$ LaTeX fragment syntax.

Link: https://orgmode.org/list/86ileukojk.fsf@lan
---
 lisp/org-lint.el | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/lisp/org-lint.el b/lisp/org-lint.el
index 0e2967b6c..8d6d22be7 100644
--- a/lisp/org-lint.el
+++ b/lisp/org-lint.el
@@ -1227,6 +1227,14 @@ (defun org-lint-incomplete-citation (ast)
                                        (org-element-property :parent text))
                  "Possibly incomplete citation markup")))))
 
+(defun org-lint-LaTeX-$ (ast)
+  "Report semi-obsolete $...$ LaTeX fragments."
+  (org-element-map ast 'latex-fragment
+    (lambda (fragment)
+      (and (string-match-p "^[$][^$]" (org-element-property :value fragment))
+           (list (org-element-property :begin fragment)
+                 "Potentially confusing LaTeX fragment format.  Prefer using more reliable \\(...\\)")))))
+
 \f
 ;;; Checkers declaration
 
@@ -1450,6 +1458,11 @@ (org-lint-add-checker 'incomplete-citation
   #'org-lint-incomplete-citation
   :categories '(cite) :trust 'low)
 
+(org-lint-add-checker 'LaTeX-$
+  "Report potentially confusing $...$ LaTeX markup."
+  #'org-lint-LaTeX-$
+  :categories '(markup))
+
 (provide 'org-lint)
 
 ;; Local variables:
-- 
2.39.1


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-- 
Ihor Radchenko // yantar92,
Org mode contributor,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>