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Re: Fill column indicator functionality

From: Eli Zaretskii
Subject: Re: Fill column indicator functionality
Date: Sat, 06 Apr 2019 09:49:49 +0300

> From: Óscar Fuentes <address@hidden>
> Date: Fri, 05 Apr 2019 23:10:46 +0200
> I have a patch from some days ago applied here, sorry if this is
> outdated, but I see something suspicious. After M-x customize-variable
> display-fill-column-indicator-character :
> Hide display-fill-column-indicator-character: nil
>     State : STANDARD. (mismatch)
>    Character to draw the indicator when ‘display-fill-column-indicator’ is 
> non-n
> That "nil" and "mismatch" are not right. This is the definition of the
> variable in xdisp.c:
>   DEFVAR_LISP ("display-fill-column-indicator-character", 
> Vdisplay_fill_column_indicator_character,
>     doc: /* Character to draw the indicator when 
> `display-fill-column-indicator' is non-nil.
> The default is U+2502 but a good alternative is (ascii 124) if
> the font in fill-column-face does not support Unicode characters.  */);
>   Vdisplay_fill_column_indicator_character = Qnil;
>   DEFSYM (Qdisplay_fill_column_indicator_character, 
> "display-fill-column-indicator-character");
>   Fmake_variable_buffer_local (Qdisplay_fill_column_indicator_character);

Hmm... why do we need those DEFSYMs?  I don't think the Qfoo symbols
are ever used in C, are they?  Do the problems go away if you remove

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