* Alejandro Colomar <alx.manpages@xxxxxxxxx>, 2021-01-21, 20:54:
On 1/12/21 9:51 PM, Jakub Wilk wrote:
On 1/10/21 7:50 AM, G. Branden Robinson wrote:
They use left and right angle bracket special character escapes
(Unicode U+2039 and U+203A)
I think that's a bug in groff. It should use plain <> for URLs, at least
for tty output devices.
* Alejandro Colomar <alx.manpages@xxxxxxxxx>, 2021-01-10, 15:35:
I checked, and yes, it renders some character (the character depends
on the terminal: on tty I've seen a diamond, and on the xfce terminal
something similar (but slightly different) to a parenthesis).
Your console font doesn't support U+2039/U+203A and uses diamond as a
replacement character.
I have this in /etc/groff/mdoc.local and /etc/groff/mdoc.local as a
work-around:
. if '\V[TERM]'linux' \
. tr \[la]<
. if '\V[TERM]'linux' \
. tr \[ra]>
(In the long run, I should probably fix the font instead.)
After seeing Branden's answer to Michael (Escaping hyphens), I've seen
groff_char(7), and I found that my tty correctly supports U+2039 and
U+203A. I clearly see the symbols I would expect: something quite
similar to plain <>, but a bit more obtuse.
In the XFCE terminal, I also see something quite expected: a slightly
smaller version of <>.
But both show me very different characters for .UR/.UE.
tty displays a diamond, and XFCE term displays (a weird version of)
round parentheses.
So... does it mean there's a bug in .UR/.UE?
Or a bug in Branden. ;-)
Contrary to what he wrote, and what I parroted, .UR/.UE use U+27E8 and
U+27E9 as delimiters.
--
Jakub Wilk
