Edit code block stays in fundamental mode

[orontee]

Expected Behavior

After I added to markdown-code-lang-modes the pair ("restclient" . "restclient-mode"), when editing a code block starting with "restclient", I expect indirect edit buffer to have restclient-mode turned on.

Actual Behavior

The indirect edit buffer is in fundamental mode.

It may come from Restclient having no entry in auto-mode-alist nor in major-mode-remap-alist; Thus markdown--lang-mode-predicate returns nil.

Steps to Reproduce

1. Using "customize" extend markdown-code-lang-modes as said above
2. Install the package "restclient"
3. In a buffer using (the excellent) markdown mode, edit a code block starting with restclient.

Backtrace

NA

Software Versions

• Markdown Mode: markdown-mode, version 2.7-alpha
• Emacs: GNU Emacs 30.0.93 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.38, cairo version 1.16.0) of 2024-12-21
• OS: Linux peitho 6.11.10+bpo-amd64 Correct fix for a markdown-tests.el byte-compilation warning, add tests. #1 SMP PREEMPT_DYNAMIC Debian 6.11.10-1~bpo12+1 (2024-12-19) x86_64 GNU/Linux

[syohex]

#873