From: Stephen Berman <stephen.berman@gmx.net>
To: dalanicolai@gmail.com
Cc: 44229@debbugs.gnu.org
Subject: bug#44229: 27.1; Can not set tabulated-list-format with variable
Date: Mon, 26 Oct 2020 22:23:39 +0100 [thread overview]
Message-ID: <87a6w8smuc.fsf@rub.de> (raw)
In-Reply-To: <6d9d638cf2dbdcbbddf80be8e9845318b0e154cd.camel@gmail.com> (dalanicolai@gmail.com's message of "Mon, 26 Oct 2020 06:52:13 +0100")
On Mon, 26 Oct 2020 06:52:13 +0100 dalanicolai@gmail.com wrote:
> I would like to make the tabulated-list-format customizable, but the
> format (width) can not be set using a variable.
> To reproduce evaluate the following code:
>
> ```
> (defvar col1-width 4)
> (defvar col2-width 10)
>
> (define-derived-mode tabular-bug-demo-mode
> tabulated-list-mode "tab-bug"
> "Major mode for Tab-bug."
> (setq-local tabulated-list-format [("Col1" 4 nil)
> ("Col2" 10 nil)])
> (tabulated-list-init-header))
>
> (let ((buf (switch-to-buffer "tablist-bug-demo")))
> (with-current-buffer buf
> (tabular-bug-demo-mode)
> (setq-local tabulated-list-entries (list (list nil ["1" "so
> unfortunately this"])
> (list nil ["2" "does not
> work"])
> (list nil ["3" "when using
> variables"])))
> (tabulated-list-print)))
> ```
>
> The code above should work correctly. However when you try to use the
> variable defined in the first two lines for the width within the
> definition of the tabulated-list-format then no tabular list is printed
> but instead Emacs shows an error that the width is not a number or
> marker (number-or-marker-p).
>
> I guess this is not the desired behavior?
Using the literal vector notation is like using a quoted list.
It works if you use this:
(setq-local tabulated-list-format `[("Col1" ,col1-width nil)
("Col2" ,col2-width nil)])
or alternatively this:
(setq-local tabulated-list-format (vector (list "Col1" col1-width nil)
(list "Col2" col2-width nil)))
Steve Berman
prev parent reply other threads:[~2020-10-26 21:23 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-26 5:52 bug#44229: 27.1; Can not set tabulated-list-format with variable dalanicolai
2020-10-26 10:45 ` Lars Ingebrigtsen
2020-10-26 21:10 ` dalanicolai
2020-10-26 21:12 ` Lars Ingebrigtsen
2020-10-26 21:20 ` dalanicolai
2020-10-26 21:20 ` dalanicolai
2020-10-26 21:21 ` dalanicolai
2020-10-26 21:26 ` Lars Ingebrigtsen
2020-10-26 23:35 ` dalanicolai
2020-10-26 21:23 ` Stephen Berman [this message]
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