Backreferences in search fail to work with vim-style-regexp

[totallyuniquelily]

Issue type

• Bug report

Environment

Emacs version: GNU Emacs 29.3 (build 2, x86_64-unknown-linux-gnu, GTK+ Version 3.24.41, cairo version 1.18.0) of 2024-03-25
Operating System: Void Linux
Evil version: Evil version 1.15.0 (reproduced with github master as well)
Evil installation type: Doom (which I think uses ELPA)
Graphical/Terminal: Graphical
Tested in a make emacs session (see CONTRIBUTING.md): Yes

Reproduction steps

• Start Emacs (with make emacs)
• open a scratch buffer and insert text with repeating letters (e.g. "green wood")
• enable evil-search search module (M-: (evil-select-search-module 'evil-search-module 'evil-search))
• enable vim-style regexp (M-: (setq evil-ex-search-vim-style-regexp t))
• type /\(.\)\1 (or /\v(.)\1)

Expected behavior

search would find "ee" and "oo"

Actual behavior

search fails

Further notes

\(.\)\1 works the same in (neo)vim and isearch. just not in evil-search with evil-ex-search-vim-style-regexp enabled. (and works if that variable is set to nil)

[tomdl89]

Thanks @totallyuniquelily I can reproduce this. Will take a look when I get some time.

[tomdl89]

@totallyuniquelily this should now be fixed in master. Let me know if you observe otherwise.