Re: Fill column indicator functionality

[Eli Zaretskii]

> From: Robert Pluim <address@hidden>
> Cc: address@hidden
> Date: Fri, 05 Apr 2019 14:09:58 +0200
> 
>     Eli> Is this in Emacs -Q or do you have some font or fontset
>     Eli> customizations?  If the latter, please try in "emacs -Q", and
>     Eli> if that works, please tell what customizations defeats that.
> 
> This is with font customizations, it works in 'emacs -Q', However:

Please show the customizations, I still don't understand the issue
100%.

> emacs -Q
> <set default face to "IBM Plex Mono", which canʼt display \u2502>
> M-x global-display-fill-column-indicator-mode => shows boxes at eol
> C-x 8 RET 2502 => shows '|' glyph, and 'C-u C-x =' =>

What Unicode blocks does this font support more-or-less fully?  In
particular, does it have any glyphs in the Box Drawing block?

In general, it is not a good idea to choose as your default a font
that cannot display symbol and punctuation characters, because Emacs
prefers the default fonts for those.  I'm guessing your fontset
customizations somehow disabled that.