escaped $ in math mode

[slyfr]

Expected behavior

When in a math environment typing \$ should insert \$.

Actual behavior

• When in a math environment of the form $ ... $ typing \$ only \ is inserted. The symbol $ is omitted.
• When in a math environment of the form \( ... \) typing \$ inserts \$$. A redundant $ is inserted.

Steps to reproduce the problem

Enter in latex-mode create the math environments en type \$

Backtraces if necessary (M-x toggle-debug-on-error)

Environment & version information

In recent enough smartparens you can call M-x sp-describe-system to generate this report. Please fill manually what we could not detect automatically. Edit the output as you see fit to protect your privacy.

• smartparens version: 20201217.1033
• Active major-mode: latex-mode
• Smartparens strict mode: nil
• Emacs version (M-x emacs-version): GNU Emacs 27.1 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.20, cairo version 1.16.0) of 2020-09-19
• Starterkit/Distribution: Spacemacs
• OS: gnu/linux

[Fuco1]

For me in both cases \$$ is inserted.

[slyfr]

I tried to modify

(sp-local-pair "$" "$")

into

(sp-local-pair "$" "$" 
                      :unless '(sp-latex-point-after-backslash ))

but it does not work... I do not see how to modify the code to obtain the right behaviour.

[Fuco1]

Yea it's probably a regression caused by some changes in latex-mode.

[slyfr]

I guess so.

Do you have any idea on how to observe what happens en inputing '$' after '\'?