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From: "Kévin Le Gouguec" <kevin.legouguec@gmail.com>
To: "積丹尼 Dan Jacobson" <jidanni@jidanni.org>
Cc: 44226@debbugs.gnu.org
Subject: bug#44226: display-fill-column-indicator not ready for prime time
Date: Mon, 26 Oct 2020 07:54:10 +0100	[thread overview]
Message-ID: <87tuuhmq99.fsf@gmail.com> (raw)
In-Reply-To: <875z6xj3ch.5.fsf@jidanni.org> ("積丹尼 Dan Jacobson"'s message of "Mon, 26 Oct 2020 07:25:02 +0800")

積丹尼 Dan Jacobson <jidanni@jidanni.org> writes:

> Alas,
> for my average file.txt
> setting display-fill-column-indicator to t did nothing.

What about M-x display-fill-column-indicator-mode?

> OK describe-variable display-fill-column-indicator leads to
> (info "(emacs) Displaying Boundaries")
> OK, starting over, maybe I need to change display-fill-column-indicator-
> character
> user-error: Value ‘|’ does not match type choice of display-fill-column-indicator-character
> user-error: Value ‘x’ does not match type choice of display-fill-column-indicator-character

How did you try to set this?  Based on your error message, I'm guessing
M-x set-variable?

Characters in Elisp must be spelled with a leading '?', e.g. ?| or ?x
(info "(elisp) Basic Char Syntax").  This is a bit tricky to type with
M-x set-variable, since hitting '?' in the value prompt brings up the
variable's *Help* buffer.  You need to type:

M-x set-variable RET display-fill-column-indicator RET C-q ? | RET

>    Documentation:
>    Character to draw the indicator when ‘display-fill-column-indicator’ is non-nil.
>    The default is U+2502 but a good alternative is 
>    ^^^^^^^^^^^SO WHY IS IT STILL NIL?              

Good question (it is nil for me as well right after startup with emacs
-Q).  Maybe it's set when display-fill-column-indicator-mode is called?

>                                                    (ascii 124)
>                                                    ^^^^^^^^^^ ALSO SAY '|'

I agree that either the character, or its name ("VERTICAL LINE") would
be more informative, to save the reader a roundtrip to ascii(7).

> OK, let's try some more.
> user-error: Value ‘U+2502’ does not match type choice of display-fill-column-indicator-character
> user-error: Value ‘│’ does not match type choice of display-fill-column-indicator-character

Cf above: you need to spell this with Elisp's character syntax, so
#x2502 or ?|.





  reply	other threads:[~2020-10-26  6:54 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-25 23:25 bug#44226: display-fill-column-indicator not ready for prime time 積丹尼 Dan Jacobson
2020-10-26  6:54 ` Kévin Le Gouguec [this message]
2020-10-26  7:27   ` 積丹尼 Dan Jacobson
2020-10-26 10:32     ` Lars Ingebrigtsen
2020-10-26  7:42   ` 積丹尼 Dan Jacobson

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