From: Danek Duvall <duvall@comfychair.org>
To: Peter Stephenson <p.stephenson@samsung.com>
Cc: Zsh Users <zsh-users@zsh.org>
Subject: Re: End boldface also ends background color
Date: Thu, 24 Mar 2016 07:53:51 -0700 [thread overview]
Message-ID: <20160324145351.GA16328@lorien.comfychair.org> (raw)
In-Reply-To: <20160324103837.678f2f36@pwslap01u.europe.root.pri>
On Thu, Mar 24, 2016 at 10:38:37AM +0000, Peter Stephenson wrote:
> On Wed, 23 Mar 2016 18:53:56 -0700
> Bart Schaefer <schaefer@brasslantern.com> wrote:
> > There's no TCBOLDFACEEND, which I presume is why %b resorts to turning
> > off everything. But I don't know much about how the txt* macros work.
>
> The bottom level of this, where it feeds into termcap, is
> settextattributes() in zle_referesh.c:
>
> if (txtchangeisset(atr, TXTNOBOLDFACE))
> tsetcap(TCALLATTRSOFF, 0);
>
> Even in terminfo there doesn't seem to be exit_bold_mode, unlike
> standout, reverse and underline (though it looks like standout maps to
> reverse here).
>
> If you look at the definitions, you'll see that \e[1m turns on bold,
> \e[7m reverse, \e[4m underline. The definitions mapping to exit reverse
> and exit underline are \e[27m and \e[24m. Nothing maps to \e[21m that I
> can see. It works on some terminals, I used gnome-terminal:
>
> print -P "first%Ufoo%{\e[1m%}bar%{\e[21m%}more%ulast"
>
> However, that didn't seem to work on xterm (a few years old), so
> apparently we can't assume it.
Worth at least pinging Thomas Dickey to add the capability to xterm, and to
create a new capability for ncurses -- or at least find out if there's a
reason it doesn't exist? Once you build zsh against the new version of
both, it would work, and you'd get historical behavior until then.
Danek
next prev parent reply other threads:[~2016-03-24 15:03 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-22 19:44 Dominik Ritter
2016-03-22 21:00 ` Mikael Magnusson
2016-03-24 1:53 ` Bart Schaefer
2016-03-24 10:38 ` Peter Stephenson
2016-03-24 14:53 ` Danek Duvall [this message]
2016-03-24 17:26 ` Bart Schaefer
2016-03-24 18:08 ` Danek Duvall
2016-03-24 17:21 ` Mikael Magnusson
2016-03-24 17:33 ` Bart Schaefer
2016-03-24 17:39 ` Peter Stephenson
2016-03-24 18:00 ` Bart Schaefer
[not found] ` <20160324103837.678f2f36__45846.6877033517$1458816008$gmane$org@pwslap01u.europe.root.pri>
2016-03-24 18:20 ` Stephane Chazelas
2016-03-24 21:34 ` Bart Schaefer
2016-03-24 22:43 ` Mikael Magnusson
2016-03-25 0:23 ` Bart Schaefer
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