evil-local-mode altering match data causing org-mode tables to hang

[cgrabenstein]

Issue type

• Bug report

Environment

Emacs version: GNU Emacs 28.1 (build 1, x86_64-apple-darwin20.6.0, Carbon Version 164 AppKit 2022.6) of 2022-05-03

Operating System: macOS Monterey Evil version: 1.15.0 Evil installation type: straight Graphical/Terminal: Graphical Tested in a make emacs session (see CONTRIBUTING.md): Yes, together with evil-leader and org-mode

Reproduction steps

• Start Emacs
• Install org-mode 9.5.4, evil and evil-leader, and enable evil-mode and global-evil-leader-mode.
• Open or create an org file that has a table like that:

| header | another header |

• Place your cursor in the header and hit enter (in evil insert mode).
• Emacs hangs in an endless loop, you will have to interrupt with C-g.

Expected behavior

Emacs should not hang.

Actual behavior

Emacs hangs

Further notes

• See https://emacs.stackexchange.com/questions/72769/org-mode-tables-slowed-down-by-evil-mode for a bit more background regarding this issue.

• I originally reported this to the org-mode mailing list, as the described behaviour does not happen with org-mode 9.5.2. But Ihor Radchenko responded:

  evil-local-mode is run in temporary buffer, which is OK. What is not OK is that evil-local-mode is altering the match data. It must not happen.

  Hence I am reporting it here.