And I just gave myself an idea for an implementation:
function suspend
if status --is-login
echo cannot suspend login shell >&2
else
kill -STOP %self
end
end
Seems to work like a charm. Unless someone objects before I get back to a
terminal, I'll submit a pull request for this.
On Tue, Aug 4, 2015 at 3:16 AM Mike Meyer <[email protected]> wrote:
> And to answer the implied question - C-Z isn't a fish thing, it's a tty
> driver thing. It sends a TSTP signal to the controlling process. The
> default action is to suspend the process, and transfer control back to the
> first ancestor does some kind of job control. But you can get the same
> effect with a kill -STOP. Job control is the fish feature you just
> demonstrated.
>
> On Tue, Aug 4, 2015 at 3:08 AM Mike Meyer <[email protected]> wrote:
>
>> On Tue, Aug 4, 2015 at 2:14 AM Diego Zamboni <[email protected]> wrote:
>>
>>> Hi Mike,
>>>
>>> There doesn't seem to be a way to suspend a fish shell, ala the
>>> "suspend" builtin in zsh, bash, etc. I'm wondering if this is a bug, and
>>> C-Z should work (except in a login shell), or if it's a design feature. or
>>> if no one has asked for it?
>>>
>>>
>>> It works for me:
>>>
>>> diego@cuper➜ sleep 50
>>> <press Ctrl-Z>
>>> 'sleep 50' has stopped
>>> diego@cuper➜ jobs
>>> Job Group State Command
>>> 1 53568 stopped sleep 50
>>> diego@cuper➜ bg
>>> Send job 1 'sleep 50' to background
>>> diego@cuper➜ fg
>>> Send job 1, 'sleep 50' to foreground
>>> ^C~
>>>
>>
>> That's not suspending the shell, the shell, that's suspending to the
>> shell. Using bash as an example, since fish apparently doesn't do this:
>>
>> bhuda% bash
>> [mwm@bhuda ~/src/chiselapp/straight]$ pwd
>> /export/mwm/src/chiselapp/straight
>> [mwm@bhuda ~/src/chiselapp/straight]$ jobs
>> [mwm@bhuda ~/src/chiselapp/straight]$ suspend
>> 'bash' has stopped
>> bhuda% jobs
>> ~/src/chiselapp/straight|fs:trunk@75f77
>> Job Group State Command
>> 1 27193 stopped bash
>> bhuda%
>>
>> See the difference? Being able to suspend a shell is a pretty standard
>> feature:
>>
>> bhuda% jobs
>> Job Group State Command
>> 5 27790 stopped bltsh
>> 4 27719 stopped zsh
>> 3 27702 stopped bash
>> 2 27684 stopped csh
>> 1 27666 stopped tcsh
>> bhuda%
>>
>> The only other shell I could find that couldn't be suspended was /bin/sh,
>> which is based on ash.
>>
>> Most programs that aren't shells will catch C-Z to suspend, but the only
>> one of the above that does that is bltsh, and it's really more a tcl
>> interpreter than a shell. The others all have a "suspend" command that
>> suspends them back to whatever program launched them. Unless they're a
>> login shell, in which case it's usually disabled.
>>
>
------------------------------------------------------------------------------
_______________________________________________
Fish-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/fish-users
