Re: [External] : Re: missing a character / font in agenda?

[Max Nikulin]

On 05/08/2022 13:15, Ihor Radchenko wrote:
> Max Nikulin writes:
>
> > DejaVuSansMono has at least
> > - "\u{21fd}" "⇽" LEFTWARDS OPEN-HEADED ARROW
> > https://util.unicode.org/UnicodeJsps/character.jsp?a=21fd
> > - "\u{2190}" "←" LEFTWARDS ARROW
> > https://util.unicode.org/UnicodeJsps/character.jsp?a=2190
> > from https://en.wikipedia.org/wiki/Arrows_(Unicode_block)
>
> "⇽" looks better on my system. However, I do not see "⇽" LEFTWARDS
> OPEN-HEADED ARROW in Liberation Fonts used by default in Emacs on my
> system. Though I only tested using emacs -Q + M-x describe-char

You are right. Courier New is immortal and fonts created to be 
metric-compatible with it will outlive this font. I forgot about such 
compatibility test.

Another approach would be assuming reasonable set of modern fonts and 
providing some defcustom to switch to legacy compatibility mode.