From: Daniel Hahler <genml+zsh-workers@thequod.de>
To: Zsh Hackers' List <zsh-workers@zsh.org>
Subject: Re: Prompt redrawing issues with wrapped prompt on SIGWINCH
Date: Sat, 18 Apr 2015 23:30:10 +0200 [thread overview]
Message-ID: <5532CCE2.1000309@thequod.de> (raw)
In-Reply-To: <150418102138.ZM12808@torch.brasslantern.com>
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On 18.04.2015 19:21, Bart Schaefer wrote:
> On Apr 18, 7:04pm, Daniel Hahler wrote:
> }
> } Some remarks: it does not only affect urxvt, but also gnome-terminal.
> } So it's likely to be a common issue with all terminals?!
>
> Doesn't happen to me with xterm, but it sends multiple SIGWINCH rather
> than wait for the final size of the window.
In xterm I only see a single SIGWINCH (via TRAPWINCH).
> } Could this be addressed by e.g. having the terminal notify zsh about
> } SIGWINCH before reflowing/rewrapping the text, or something similar?
>
> Signals are asynchronous at the OS level so the emulator can't control
> whether the shell has as chance to respond to the signal before it
> redraws the text. In any case this would require reprogramming the
> emulator, so is out of our hands.
Yes, the emulator would have to be patched/fixed for this.
Could it emit/forward the signal, and only redraw after it has been
processed by the shell?
Or would the shell have to answer / re-emit the signal for this to work?
> } > PS1=$'${(pl:COLUMNS-1::=:)}\n %# '
> }
> } This suggested workaround only helps if you resize the window by one
> } column, e.g. when using the mouse. But modkey-h/l in awesome changes
> } the master-window-factor by a percent of the screen size.
>
> The suggested workaround was successful for me when using mouse-drag to
> resize the window, despite urxvt sending only a single SIGWINCH when the
> mouse was released, which should be analogous to having the window manager
> trigger a proportional resize. What version of zsh do you have?
I am using zsh from git master, 5.0.7-dev-1 (@2e48eceb).
Thanks,
Daniel.
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next prev parent reply other threads:[~2015-04-18 21:30 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-17 22:56 Daniel Hahler
2015-04-18 3:43 ` Mikael Magnusson
2015-04-18 15:57 ` Bart Schaefer
2015-04-18 17:04 ` Daniel Hahler
2015-04-18 17:21 ` Bart Schaefer
2015-04-18 21:30 ` Daniel Hahler [this message]
2015-04-18 23:00 ` Bart Schaefer
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