Re: self contained nnfolder

[Dan Christensen <jdc+news@uwo.ca>]

Dan Christensen <jdc+news@uwo.ca> writes:

> I tried the following settings for g-secondary-select-methods:
>
>       '((nnfolder "")) 
>       '("nnfolder:")
>       '("")
>       nil
>
> The first one works for me in all the cases I tested.  The second
> never works.  The third and forth gave me errors when "nnfolder:" was
> used in my .newsrc as the server for each group in gnus-newsrc-alist,
> but is ok when "" is used as the server for each group.  

It turns out that the third also makes it impossible for me to get new
mail!  (Backtrace below.)  So I've switched back to the first version.

The general advice seems to be to use strings everywhere.  While that
may be correct in principle, in practice it seems to just create
errors everywhere.  I really think that for both users and developers,
a document explaining the details about server methods would be very
useful.  I have a feeling that there are some bugs in gnus caused
because not every developer fully understands how these things are
handled (which is not surprising given their complexity!).

Here's the backtrace from using the third setting above:

Debugger entered--Lisp error: (wrong-type-argument listp "")
  nnmail-cache-primary-mail-backend()
  nnmail-cache-insert("<E15dvEj-0003IO-00@scratchy>")
  nnmail-check-duplication("<E15dvEj-0003IO-00@scratchy>" nnfolder-save-mail nnfolder-active-number)
  nnmail-process-unix-mail-format(nnfolder-save-mail nnfolder-active-number)
  nnmail-split-incoming("~/.emacs-mail-crash-box" nnfolder-save-mail nil nil nnfolder-active-number)
  #[(file orig-file) "Â\bÃÄ\b	š?…\x0f\0Å	Æ\"Ç%‡" [file orig-file nnmail-split-incoming nnfolder-save-mail nil nnmail-get-split-group (file :prescript ... :path "~/Mail/suck") nnfolder-active-number] 7]("~/.emacs-mail-crash-box" "~/.emacs-mail-crash-box")
  mail-source-callback(#[(file orig-file) "Â\bÃÄ\b	š?…\x0f\0Å	Æ\"Ç%‡" [file orig-file nnmail-split-incoming nnfolder-save-mail nil nnmail-get-split-group (file :prescript ... :path "~/Mail/suck") nnfolder-active-number] 7] "~/.emacs-mail-crash-box")
  mail-source-fetch((file :prescript (quote jdc-suck) :path "~/Mail/suck") #[(file orig-file) "Â\bÃÄ\b	š?…\x0f\0Å	Æ\"Ç%‡" [file orig-file nnmail-split-incoming nnfolder-save-mail nil nnmail-get-split-group (file :prescript ... :path "~/Mail/suck") nnfolder-active-number] 7])
  nnmail-get-new-mail(nnfolder #[nil "\b\x19Š	…=\0	@A@‰\x1a…^[\0Ã\n!…^[\0ÄÃ\n!!)„(\0Å	@\b\"\x10‚5\0	@A@qˆÆ ˆÇp!ˆ	A‰\x11„\a\0È*‡" [nnfolder-buffer-alist bufs buffer get-buffer buffer-name delq nnfolder-save-buffer kill-buffer nil] 4] "~/Gnus/Mail" "house")
  nnfolder-request-scan("house" "")
  gnus-request-scan("nnfolder:house" (nnfolder ""))
  gnus-activate-group("nnfolder:house" scan)
  gnus-get-unread-articles(2)
  gnus-group-get-new-news(2)
  call-interactively(gnus-group-get-new-news)

-- 
Dan Christensen
jdc+news@uwo.ca