> From: "Patrick Lenihan [sc17pl]" &l=
t;P.J.Lenihan1@leeds.ac.uk>
> Date: Wed, 3 Nov 2021 12:26:59 +0000
>
> Note that this issue disappears when Emacs is built without Cairo supp=
ort.
>
> ----------------------------------------------------------------------=
--------
> From: Patrick Lenihan [sc17pl] <P.J.Lenihan1@leeds.ac.uk>
> Sent: 02 November 2021 17:58
> To: Stefan Kangas <stefan@marxist.se>
> Subject: Re: bug#51385: 29.0.50; PragmataPro wide word ligatures such =
as [ERR] having the left side cut
> off in cairo build
>
> 1 run command "emacs -Q"
> 2 M-:
> 3 (set-frame-font "PragmataPro Mono Liga" nil t)
> 4 C-uC-u<SPC>
> 5 M-x
> 6 insert-char #Xe2c0
> 7 Repeat 4-6 substituting #Xe2c0 for any of the following: #Xe2b0, #Xe=
2b1, #Xe2b2, #Xe2b3, #Xe2b4,
> #Xe2b5, #Xe2b6, #Xe2c0, #Xe2c1, #Xe2c2, #Xe2c3, #Xe2c4, #Xe2c5, =
#Xe2c6, #Xe2c7, #Xe2c8,
> #Xe2c9, #Xe2ca, #Xe2cb, #Xe2cc, #Xe2cd, #Xe2ce, #Xe2e0, #Xe2e1, =
#Xe2e2, #Xe2e3, #Xe2e4,
> #Xe2e5, #Xe2e6, #Xe2e7, #Xe2e8, #Xe2e9, #Xe2ea, #Xe2eb, #Xe2ec, =
#Xe2ed, #Xe2e #Xe2f0, #Xe2f1,
> #Xe2f2, #Xe2f3, #Xe2f4, #Xe2f5, #Xe2f6, #Xe2f7, #Xe2f8, #Xe2f9, =
#Xe2fa, #Xe2fb, #Xe2fc, #Xe2fd, #Xe2fe
>
> At the moment all are clipped unless Emacs is built without Cair=
o support.
These characters are from the Private Use Area (PUA) of Unicode. Why<=
br>
do you expect Emacs to produce anything sensible for them? To display=
such characters, it is not enough to install a font that has glyphs
for PUA codepoints, you need also to tell Emacs what attributes and
properties those codepoints have, because Unicode doesn't define any
properties for those codepoints.
I don't see a bug in this recipe. Emacs currently doesn't support
display of arbitrary PUA characters.