From: Mikael Magnusson <mikachu@gmail.com>
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 18:21:59 +0100 [thread overview]
Message-ID: <CAHYJk3QLwKjGv3X0PL9-YR3UeaguH0NqAp8tDr008pCBiaApSw@mail.gmail.com> (raw)
In-Reply-To: <20160324103837.678f2f36@pwslap01u.europe.root.pri>
On Thu, Mar 24, 2016 at 11:38 AM, Peter Stephenson
<p.stephenson@samsung.com> 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. We could make it an option, but that's a
> bit of a pain. Short of that, it's not going to work without rewriting
> the code substantially to track the current mode as well as the modes
> that need changing.
Like I wrote in my first reply, 22 turns off bold in most terminals,
but termcap doesn't include it.
ctlseqs.txt says
Ps = 2 2 -> Normal (neither bold nor faint)
Ps = 2 4 -> Not underlined
Ps = 2 5 -> Steady (not blinking)
Ps = 2 7 -> Positive (not inverse)
Ps = 2 8 -> Visible, i.e., not hidden (VT300)
and as you say, nothing maps to 21. I don't know why termcap doesn't
include the bold-off code.
>> The doc for %F references zle_highlight which implies that you should
>> be able to do %F{bold} but that doesn't work, and the numeric color
>> values supported are not the ANSI color attributes. The doc should
>> probably be tightened up to reflect this.
>
> No, they're not the same thing, though we do make use of termcap for
> colours where available.
>
> pws
--
Mikael Magnusson
next prev parent reply other threads:[~2016-03-24 17:22 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
2016-03-24 17:26 ` Bart Schaefer
2016-03-24 18:08 ` Danek Duvall
2016-03-24 17:21 ` Mikael Magnusson [this message]
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=CAHYJk3QLwKjGv3X0PL9-YR3UeaguH0NqAp8tDr008pCBiaApSw@mail.gmail.com \
--to=mikachu@gmail.com \
--cc=p.stephenson@samsung.com \
--cc=zsh-users@zsh.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://git.vuxu.org/mirror/zsh/
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).