Re: emacs 28 search not working with nnml

[Eric Abrahamsen <eric@ericabrahamsen.net>]

Eric S Fraga <e.fraga@ucl.ac.uk> writes:

> On Wednesday, 23 Jun 2021 at 14:54, Thomas Alexander Gerds wrote:
>> I am using nnml and have all my email downloaded to my laptop using
>
> I have a similar configuration.  My settings look like this:
>
> #+begin_src emacs-lisp
>   (setq gnus-secondary-select-methods
>         '((nnml "work"
>                 (gnus-search-engine gnus-search-notmuch
>                                     (remove-prefix "/HOME/Mail")
>                                     (config-file "/HOME/.notmuch-config")
>                                     )
>                 (get-new-mail t))))
>
>   (add-to-list 'gnus-search-default-engines '(nnml . notmuch))
>   (setq gnus-search-notmuch-remove-prefix "/HOME/Mail")
>   (with-eval-after-load "gnus-search"
>     (cl-defmethod gnus-search-indexed-parse-output :around
>       ((e gnus-search-notmuch) s q groups)
>       (let ((gs (mapcar (lambda (g) (replace-regexp-in-string "\\." "/" g))
>                         groups)))
>         (cl-call-next-method e s q gs))))
> #+end_src
>
> where HOME in various places above should be replaced by your home
> directory.  I have gnus splitting email into various sub-directories of
> Mail/.
>
> The last bit was suggested by Jose A. Ortega Ruiz on the gnus newsgroup
> [1] sometime in late 2020 and proved to be necessary (at that time) to
> get the new search engine to work with nnml.  It basically changes the
> file paths from . to / separators.

FWIW, this hack isn't necessary any more, if you're running a recent
Emacs from master (looks like since early February of this year).

Thomas, the bug you're seeing is something I'm aware of, I just haven't
come up with a great solution for it yet (actually I'd forgotten about
it). I'll get that fixed soon, and report back here.

Eric