bug#28103: M-x customize should use fill-column

bug#28103: M-x customize should use fill-column

[Yegor Timoshenko]

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Hello! This is an enhancement request.

M-x customize sometimes produces very long lines (for example, try
customizing eshell-modules-list). It'd be nice if M-x customize honored
`fill-column` when pretty-printing.

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bug#28103: M-x customize should use fill-column

[Charles A. Roelli]

From emacs -q:

M-x load-library eshell RET
M-x customize-variable eshell-modules-list RET

gives something like this:

Eshell Modules List:
[X] eshell-alias -- Command aliases

Command aliases allow for easy definition of alternate commands.
 
[X] eshell-banner -- Login banner

This sample module displays a welcome banner at login.
It exists so that others wishing to create their own Eshell extension
modules may have a simple template to begin with.
 
[X] eshell-basic -- Basic shell commands

The "basic" code provides a set of convenience functions which
are traditionally considered shell builtins.  Since all of the
functionality provided by them is accessible through Lisp, they are
not really builtins at all, but offer a command-oriented way to do the
same thing.

[...]

Which lines are too long?

> From: Yegor Timoshenko <yegortimoshenko@gmail.com>
> Date: Tue, 15 Aug 2017 20:05:46 +0000
> 
> 
> 
> Hello! This is an enhancement request.
> 
> M-x customize sometimes produces very long lines (for example, try customizing eshell-modules-list). It'd be nice if M-x customize honored `fill-column` when pretty-printing.

bug#28103: M-x customize should use fill-column

[Yegor Timoshenko]

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> Which lines are too long?

I mean lines that are generated by M-x customize that end up in
~/.emacs.d/init.el (by default).

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bug#28103: M-x customize should use fill-column

[Charles A. Roelli]

> From: Yegor Timoshenko <yegortimoshenko@gmail.com>
> Date: Wed, 16 Aug 2017 15:45:56 +0000> 
> > Which lines are too long?
> 
> I mean lines that are generated by M-x customize that end up in ~/.emacs.d/init.el (by default).

Right.  I'm not sure if we have any primitive that can already fill a
long Lisp list according to `fill-column', but if we do, then we
should be able to offer an option to make cus-edit.el save
variables/faces without generating overly long lines.

bug#28103: M-x customize should use fill-column

[Lars Ingebrigtsen]

Yegor Timoshenko <yegortimoshenko@gmail.com> writes:

>> Which lines are too long?
>
> I mean lines that are generated by M-x customize that end up in
> ~/.emacs.d/init.el (by default).

I don't really think auto-filling those lines make that much sense --
they are "readable" by humans, but they're mainly there to be handled
automatically.

So I'm closing this bug report.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no