Re: [bug-mailutils] Using milutils from Guile?

[Sergey Poznyakoff]

Chris Hall <address@hidden> wrote:

>   * First, I can't seem to find a 'users' mailing list anywhere - are
>     the libraries meant primarily for developers?

For the time being address@hidden is serving as a users mailing
list as well. Feel free to post your questions here.
 
>   * I'm having trouble figuring out a decent way to *develop* guile
>     mailutil scripts:
> 
>     * 'guimb' is clearly not intended for interactive development, OK,
>       but if did actually want to use it, *how* does one refer to the
>       mailbox passed on the command line?

Use 'current-mailbox' variable. See our sieve.scm implementation
(guimb/scm/*) for examples (unfortunately our docs are far from
being perfect).

>       For example: If I have a script guimb-test.scm, and I want it to
>       just get my messages count.  I start it like so:
> 
>       guimb -M imap://address@hidden/mbox -d -s guimb-test.scm
> 
>       (mu-mailbox-messages-count ???URL???)
>                                  ^^^^^^^^^^
>                                      ^--- What goes here?

        (mu-mailbox-messages-count current-mailbox)
 

>     * If guimb is run with the '-d' flag, yep, I get a backtrace, but
>       quite frankly, how truly useful is that, since guimb then exits?
>       I can't interactively examine the stack, move to different frames,
>       try different values, etc.?

Yes, that's a good point. Using guimb -c '(top-repl)' might help,
although the feature is rather obscure and should be mentioned in the
docs.
 
>     * If instead I (use-modules (mailutils)) from within an interactive
>       guile session, it seems I can open *only* local, disk-based
>       mailboxes, and then *only* if I leave any 'file:', 'imap:',
>       etc. off of the 'URL'?  Example:
> 
>       * (mu-mailbox-open "/some/valid/path" "r") works,
> 
>       * (mu-mailbox-open "file:///some/valid/path" "r") and
>         (mu-mailbox-open "file://some/valid/path" "r") don't, nor does
>         it seem willing to even try a remote mailbox.

Did you mean (mu-mailbox-open "imap://..") and (mu-mailbox-open
"pop://..")? These work OK.

>       But then why does a "imap://" URL work in a 'guimb' script?
>       And/or doesn't it work in guile?  Both were built on the same
>       machine, using the same tool chain, about a week apart.

This seems to indicate a problem with shared libraries. Check if
mailutils libs are properly installed.

>     * Am I doing something wrong here?
>       guile> mb
>       #<mailbox /home/slacker/mbox (4)>
>       guile> (mu-mailbox-close mb)
>       ERROR: Wrong number of arguments to #<procedure -print (result)>
>       ABORT: (wrong-number-of-args)

You are doing everything right. This is my bug :) I'm going to fix it
tonight. For the time being, ignore such errors. They will not be issued
when you run your program from a script, anyway.

Regards,
Sergey