From: Juri Linkov <juri@linkov.net>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 69305@debbugs.gnu.org
Subject: bug#69305: outline-minor-mode for tabulated-list-mode
Date: Sat, 24 Feb 2024 19:43:25 +0200 [thread overview]
Message-ID: <86jzmtda1y.fsf@mail.linkov.net> (raw)
In-Reply-To: <86edd31tv5.fsf@gnu.org> (Eli Zaretskii's message of "Fri, 23 Feb 2024 10:13:02 +0200")
>> >> >> +@defvar tabulated-list-groups
>> >> >> +This buffer-local variable specifies the groups of entries displayed in
>> >> >> +the Tabulated List buffer. Its value should be either a list, or a
>> >> >> +function.
>> >> >> +
>> >> >> +If the value is a list, each list element corresponds to one group, and
>> >> >> +should have the form @w{@code{(@var{group-name} @var{entries})}}, where
>> >> >> +@var{group-name} is a string inserted before all group entries, and
>> >> >> +@var{entries} have the same format as @code{tabulated-list-entries}
>> >> >> +(see above).
>> >> >> +
>> >> >> +Otherwise, the value should be a function which returns a list of the
>> >> >> +above form when called with no arguments.
>> >> >> +@end defvar
>> >> >
>> >> > I think the way to specify ENTRIES for this customization should be
>> >> > described in more detail. Reading the above description, even the
>> >> > idea of using ENTRIES for specifying grouping is unclear, since
>> >> > tabulated-list-entries is basically just a list of column descriptors.
>> >>
>> >> But ENTRIES are described in 'tabulated-list-entries'. Here ENTRIES
>> >> are no different from 'tabulated-list-entries' that are just
>> >> column descriptors.
>> >
>> > My point is that it isn't obvious how to describe grouping in terms of
>> > column descriptors. I think the manual should tell in more detail how
>> > to use column descriptors to specify how entries should be grouped.
>> > Maybe an example or two is all that it takes to do that.
>>
>> Sorry, I don't understand what is unclear here:
>>
>> If the value is a list, each list element corresponds to one group, and
>> should have the form @w{@code{(@var{group-name} @var{entries})}}, where
>> @var{group-name} is a string inserted before all group entries, and
>> @var{entries} have the same format as @code{tabulated-list-entries}
>> (see above).
>>
>> Basically this says that the format is (group-name entries) where
>> entries are described in tabulated-list-entries as having the format
>> (id contents). There is no need to duplicate the description of entries.
>
> Maybe I'm missing something here. To put it more concretely, can you
> show a value of tabulated-list-groups that will cause the buffers in
> buffer list grouped by major mode using the above form?
Data structure for `tabulated-list-groups' is a list of elements,
each element should of the form
(GROUP-NAME (ID . CONTENTS) (ID . CONTENTS) ...)
where GROUP-NAME is the name of the group, ID is a Lisp object that
identifies the entry and CONTENTS is a vector with the same number of
elements as `tabulated-list-format'. When buffers grouped by major mode:
(("* Lisp Interaction" (#<buffer *scratch*> ["." " " "*" #("*scratch*" 0 9 ...) "225" "Lisp Interaction" ""]) ...))
>> >> >> +(ert-deftest tabulated-list-groups ()
>> >> >> + (with-temp-buffer
>> >> >> + (tabulated-list-mode)
>> >> >> + (setq tabulated-list-groups
>> >> >> + (reverse
>> >> >> + (seq-group-by (lambda (b) (concat "* " (aref (cadr b) 3)))
>> >> >> + tabulated-list--test-entries)))
>> >> >> + (setq tabulated-list-format tabulated-list--test-format)
>> >> >> + (setq tabulated-list-padding 7)
>> >> >> + (tabulated-list-init-header)
>> >> >> + (tabulated-list-print)
>> >> >
>> >> > This seems to test only the function value of tabulated-list-groups?
>> >> > What about the other form of the value?
>> >>
>> >> The other forms have no functional difference.
>> >
>> > Sorry, I don't follow. Shouldn't we test the capability of specifying
>> > grouping by the method other than by providing a function?
>>
>> Actually there are no other methods.
>
> The doc string says the "value can be either a list or a function". I
> see only one value here, so I'm asking what about a value of the other
> form. Or what am I missing here?
Another form is a function. But there is no need to test this.
It's just a copy from tabulated-list-entries that is unused.
next prev parent reply other threads:[~2024-02-24 17:43 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-21 17:34 bug#69305: outline-minor-mode for tabulated-list-mode Juri Linkov
2024-02-21 19:12 ` Eli Zaretskii
2024-02-22 7:44 ` Juri Linkov
2024-02-22 8:20 ` Eli Zaretskii
2024-02-22 17:30 ` Juri Linkov
2024-02-22 19:10 ` Eli Zaretskii
2024-02-23 7:09 ` Juri Linkov
2024-02-23 8:13 ` Eli Zaretskii
2024-02-24 17:43 ` Juri Linkov [this message]
2024-02-24 18:09 ` Eli Zaretskii
2024-02-24 18:13 ` Eli Zaretskii
2024-02-25 8:00 ` Adam Porter
2024-02-25 17:25 ` Juri Linkov
2024-02-25 19:17 ` Eli Zaretskii
2024-02-27 7:30 ` Juri Linkov
2024-02-27 8:31 ` Eli Zaretskii
2024-02-27 17:40 ` Juri Linkov
2024-02-27 18:44 ` Eli Zaretskii
2024-02-28 7:36 ` Juri Linkov
2024-02-28 12:16 ` Eli Zaretskii
2024-02-29 7:45 ` Juri Linkov
2024-02-29 16:33 ` Eli Zaretskii
2024-02-29 17:50 ` Juri Linkov
2024-03-03 6:53 ` Jean Louis
2024-03-03 7:52 ` Juri Linkov
2024-02-24 18:06 ` Ihor Radchenko
2024-02-24 18:16 ` Eli Zaretskii
2024-02-24 18:36 ` Ihor Radchenko
2024-02-24 18:49 ` Eli Zaretskii
2024-02-25 7:45 ` Adam Porter
2024-02-25 17:36 ` Juri Linkov
2024-02-26 3:31 ` Adam Porter
2024-03-06 17:37 ` Juri Linkov
2024-03-08 23:13 ` Adam Porter
2024-02-25 7:53 ` Adam Porter
2024-02-25 8:26 ` Eli Zaretskii
2024-02-25 17:20 ` Juri Linkov
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