[Pkg-emacsen-addons] Bug#840336: elpa-markdown-mode: Freezes Emacs when using TeX input mode in a header

[Christophe Troestler]

Package: elpa-markdown-mode
Version: 2.1-1
Severity: normal

Dear Maintainer,

Markdown mode makes Emacs use 100% CPU and be unresponsive (C-g has no 
effect) when using TeX input method in a header followed by an URL.

Steps to reproduce:

- Run: emacs -q
- Execute:

(load 
"/usr/share/emacs/site-lisp/elpa-src/markdown-mode-2.1/markdown-mode.el")

- Create a file, say a.md, containing

#

http://

- Place the cursor after "#".

- Switch to TeX input method (C-\ and select TeX)

- Type \  (then Emacs freezes)


emacs-25.1.50.1 and emacs-26.0.50.1 (compiled from the Git repository) 
have the same problem.


-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (900, 'testing'), (400, 'unstable'), (200, 'stable'), 
  (100, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.7.3 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages elpa-markdown-mode depends on:
ii  emacs              46.1
ii  emacs24 [emacsen]  24.5+1-7
ii  emacsen-common     2.0.8

elpa-markdown-mode recommends no packages.

elpa-markdown-mode suggests no packages.

-- no debconf information