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bug#13841: 24.3.50; Regression - unreadable `C-h k' help
From: |
Lars Ingebrigtsen |
Subject: |
bug#13841: 24.3.50; Regression - unreadable `C-h k' help |
Date: |
Sun, 09 Feb 2014 23:31:46 -0800 |
User-agent: |
Gnus/5.13001 (Ma Gnus v0.10) Emacs/24.3.50 (gnu/linux) |
"Drew Adams" <drew.adams@oracle.com> writes:
> C-h k
>
> Then choose menu item Options > Line Wrapping in This Buffer > Truncate
> Long Lines.
>
> You see binary output instead of useful help:
>
> <menu-bar> <options> <line-wrapping> <truncate> runs the command #[nil
> "ILLEGIBLE, INCOMPREHENSIBLE BINARY INCANTATIONS" [visual-line-mode
> word-wrap 0 nil toggle-truncate-lines 1] 2 nil nil], which is an
> interactive compiled Lisp function.
>
> It is bound to <menu-bar> <options> <line-wrapping> <truncate>.
>
> (anonymous)
>
> Not documented.
>
> For reference wrt this regression, this is what Emacs 23.4 shows
> instead - much more readable and helpful:
>
> <menu-bar> <options> <line-wrapping> <truncate> runs the command
> (lambda nil (interactive) (if visual-line-mode (visual-line-mode 0))
> (setq word-wrap nil) (toggle-truncate-lines 1)), which is an
> interactive Lisp function.
>
> It is bound to <menu-bar> <options> <line-wrapping> <truncate>.
Perhaps that's just because it didn't byte-compile the function? So
we're making progress.
Anyway, if we put lambdas into menus, `C-h k' isn't very helpful:
(bindings--define-key menu [truncate]
`(menu-item "Truncate Long Lines"
,(lambda ()
(interactive)
(if visual-line-mode (visual-line-mode 0))
(setq word-wrap nil)
(toggle-truncate-lines 1))
:help "Truncate long lines at window edge"
:button (:radio . (or truncate-lines
(truncated-partial-width-window-p)))
:visible (menu-bar-menu-frame-live-and-visible-p)
:enable (not (truncated-partial-width-window-p))))
I think the right solution here would be for `C-h k' just to say that
it's an anonymous function and leave it at that.
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog http://lars.ingebrigtsen.no/
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Lars Ingebrigtsen <=