On Friday, 2011-04-15, at 12:30:21 +0000, Ben Boeckel wrote:
> Tiago Resende <trese...@lavabit.com> wrote:
> > I'm gonna take a guess here. I think urxvt is reporting to support sitm
> > when it actually doesn't, then screen-256color does its switch between
> > sitm and smso, then less requests standout but gets italics instead,
> > which urxvt simply refuses to render. I just reproduced it with xterm
> > exporting TERM=rxvt-unicode-256color.
>
> Fun.
This is really screen's fault. If they wanted standout instead of
italics, all they'd have to do is set sitm to \e[7m, there's no reason
to then set smso to \e[3m. No reason at all. (Actually, there probably
_is_ some weird reason behind this, but I have no idea what it might
be).
I'm trying to come up with a way to test for this in tmux's code.
Testing for TERM=screen(-256color) to disable italics even if the
original $TERM supports it sounds pretty awkward. Well, I'll give it
some more thought.
Meanwhile, here's how you can workaround:
a) if you want to have tmux behaving exactly like urxvt, compile a custom
terminfo and tell tmux to use, as discussed previously in this thread:
$ mkdir -p $HOME/.terminfo/
$ infocmp screen-256color | sed \
-e 's/^screen[^|]*|[^,]*,/screen-it|screen with italics support,/' \
-e 's/smso=[^,]*,/smso=\\E[7m,/' \
-e 's/rmso=[^,]*,/rmso=\\E[27m,/' \
-e '$s/$/ sitm=\\E[3m, ritm=\\E[23m,/' > /tmp/terminfo
$ tic /tmp/terminfo
$ echo "set -g default-terminal 'screen-it'" >> ~/.tmux.conf
b) if you want tmux to render italics as reverse, unlike urxvt, then do
the same thing, but get rid of sitm if it exists:
$ mkdir -p $HOME/.terminfo/
$ infocmp screen-256color | sed \
-e 's/^screen[^|]*|[^,]*,/screen-noit|screen with proper standout,/' \
-e 's/smso=[^,]*,/smso=\\E[7m,/' \
-e 's/rmso=[^,]*,/rmso=\\E[27m,/' \
-e 's/ \?sitm=[^,]*,//' \
-e 's/ \?ritm=[^,]*,//' > /tmp/terminfo
$ tic /tmp/terminfo
$ echo "set -g default-terminal 'screen-noit'" >> ~/.tmux.conf
c) if you want tmux _and_ urxvt to render italics as reverse, do the
same as above, but also make your own terminfo for urxvt:
$ infocmp rxvt-unicode-256color | sed \
-e 's/^rxvt[^|]*|[^,]*,/rxvt-unicode-256color-noit|urxvt with no
italics/' \
-e 's/ \?sitm=[^,]*,//' \
-e 's/ \?ritm=[^,]*,//' >> /tmp/terminfo
$ tic /tmp/terminfo
Then add 'export TERM=rxvt-unicode-256color-noit' to your ~/.zshrc,
~/.bashrc, etc.
BTW, it might be a good idea to check /tmp/terminfo before running tic,
given my past sed performance. ;)
> > $ echo '\e[3mitalics\e[m' '\e[7mstandout\e[m'
>
> Both do normal "italics" and reverse "standout".
I was thinking, urxvt has always (I think) supported italics, so unless
your build was specifically patched to remove it (not disable it during
/configure, because if that was the case, urxvt _would_ render italics
as reverse), maybe you are just missing a font with italics?
urxvt's faq recommends Bitstream Vera; I personally use Dina. You can
use anything that is installed in your system and has italics.
You can try it with
$ urxvt -fi "xft:Bitstream Vera Sans Mono:italic:autohint=true"
for example. Then, echo '\e[3mitalics\e[m' should render italics. To
store it permanentely, add
urxvt.italicFont: xft:Bitstream Vera Sans Mono:italic:autohint=true
to ~/.Xdefaults
Also, could you let us know if this is the case? If so, it might be a
good idea to mention it in the faq.
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