alias of completion

alias of completion

[Pier Paolo Grassi]

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Hello guys, I just joined the list but I have been a zsh enthusiast for 15
years and since I discovered it it's always been the best work enviroment I
ever had.
One thing I was never been able to accomplish though, is: what if I want a
custom function, say:

mydockerwrapper(){}

behave, for completion's sake, like, let's say:

docker ls

so that if I try to complete after

mydockerwrapper <TAB>

I get the same suggestion that I would get after docker ls, and if I have

mydockerwrapper xx <TAB>

I get the same completion that I would get after  docker ls xx, and so on.

-what I tried-

I know that the completion function for the docker command is _docker, and
that I could associate my function to this completion function with

compdef _docker mydockerwrapper

but it doesn't seem possibile to pass one default argument to the
completion function in this way.

So I tried defining my own completion function, and add one argument and
pass it to the _docker function, but I got stuck on this one.

I'm sure this must be very easy to do in zsh, I just can't figure out how..
maybe someone can help me out?

thanks, happy coding everyone!


-- 
Pier Paolo Grassi
email: pierpaolog@gmail.com
linkedin: https://www.linkedin.com/in/pier-paolo-grassi-19300217
fondatore: https://www.meetup.com/it-IT/Machine-Learning-TO

Re: alias of completion

[Peter Stephenson]

From: Peter Stephenson <p.stephenson@samsung.com>
To: Pier Paolo Grassi <pierpaolog@gmail.com>
Cc: zsh-users@zsh.org
Subject: Re: alias of completion
Date: Fri, 2 Mar 2018 10:47:34 +0000
X-Mailer: Claws Mail 3.13.2 (GTK+ 2.24.30; x86_64-pc-linux-gnu)
Organization: SCSC

On Fri, 2 Mar 2018 10:31:57 +0100
Pier Paolo Grassi <pierpaolog@gmail.com> wrote:
> One thing I was never been able to accomplish though, is: what if I
> want a custom function, say:
> 
> mydockerwrapper(){}
> 
> behave, for completion's sake, like, let's say:
> 
> docker ls
> 
> so that if I try to complete after
> 
> mydockerwrapper <TAB>
> 
> I get the same suggestion that I would get after docker ls, and if I
> have
> 
> mydockerwrapper xx <TAB>
> 
> I get the same completion that I would get after  docker ls xx, and
> so on.  

You need a bit of help from the completion function in
question to do this.  The feature in question is "services": I just
looked at the docker completion and it does support this.

You'll need to do something like

compdef _docker mydockerwrapper=docker_service_complete_ls_filters

where the thing on the right of the "=" is an appropriate docker
completion function without the "_" (search for _$service for the code
in _docker supporting this).

pws

Re: alias of completion

[Pier Paolo Grassi]

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Hello Peter, thank you for your suggestion. Following it I was able to
write:

compdef _docker xy=_docker_image_commands

that kind of work for the first word, the problem is that the second word
is not completed correctly since it tries again to use  _docker_image_commands
instead of whaterver it should have called.
The only functions defined inside the file that
/usr/share/zsh/vendor-completions/_docker match the word image are:

__docker_complete_images
__docker_complete_images_filters
__docker_image_commands
__docker_image_subcommand

so there isn't a more general completion function like _docker_image that
takes care of the completion for docker image [xx [yy]...], but there are
various functions called from __docker_subcommand inspecting the
array $words. What I would need, I think, is the ability to populate from
another completion function this array adding as first argument the value
"image", so that:

compadd _docker  mydockerwrapper=docker

would make __docker_subcommand   behave as if the command line contained
not only "docker" but "docker image", something like:

compadd _docker  mydockerwrapper="docker image"

that is obviously wrong because "docker image" it is not a correct service
name, I wrote it just to illustrate my point



2018-03-02 11:51 GMT+01:00 Peter Stephenson <p.stephenson@samsung.com>:

> From: Peter Stephenson <p.stephenson@samsung.com>
> To: Pier Paolo Grassi <pierpaolog@gmail.com>
> Cc: zsh-users@zsh.org
> Subject: Re: alias of completion
> Date: Fri, 2 Mar 2018 10:47:34 +0000
> X-Mailer: Claws Mail 3.13.2 (GTK+ 2.24.30; x86_64-pc-linux-gnu)
> Organization: SCSC
>
> On Fri, 2 Mar 2018 10:31:57 +0100
> Pier Paolo Grassi <pierpaolog@gmail.com> wrote:
> > One thing I was never been able to accomplish though, is: what if I
> > want a custom function, say:
> >
> > mydockerwrapper(){}
> >
> > behave, for completion's sake, like, let's say:
> >
> > docker ls
> >
> > so that if I try to complete after
> >
> > mydockerwrapper <TAB>
> >
> > I get the same suggestion that I would get after docker ls, and if I
> > have
> >
> > mydockerwrapper xx <TAB>
> >
> > I get the same completion that I would get after  docker ls xx, and
> > so on.
>
> You need a bit of help from the completion function in
> question to do this.  The feature in question is "services": I just
> looked at the docker completion and it does support this.
>
> You'll need to do something like
>
> compdef _docker mydockerwrapper=docker_service_complete_ls_filters
>
> where the thing on the right of the "=" is an appropriate docker
> completion function without the "_" (search for _$service for the code
> in _docker supporting this).
>
> pws
>



-- 
Pier Paolo Grassi
email: pierpaolog@gmail.com
linkedin: https://www.linkedin.com/in/pier-paolo-grassi-19300217
fondatore: https://www.meetup.com/it-IT/Machine-Learning-TO

Re: alias of completion

[m0viefreak]

On 02.03.2018 10:31, Pier Paolo Grassi wrote:
> Hello guys, I just joined the list but I have been a zsh enthusiast for 15
> years and since I discovered it it's always been the best work enviroment I
> ever had.
> One thing I was never been able to accomplish though, is: what if I want a
> custom function, say:
> 
> mydockerwrapper(){}
> 
> behave, for completion's sake, like, let's say:
> 
> docker ls
> 
> so that if I try to complete after
> 
> mydockerwrapper <TAB>
> 
> I get the same suggestion that I would get after docker ls, and if I have
> 
> mydockerwrapper xx <TAB>
> 
> I get the same completion that I would get after  docker ls xx, and so on.
> 
> -what I tried-
> 
> I know that the completion function for the docker command is _docker, and
> that I could associate my function to this completion function with
> 
> compdef _docker mydockerwrapper
> 
> but it doesn't seem possibile to pass one default argument to the
> completion function in this way.
> 
> So I tried defining my own completion function, and add one argument and
> pass it to the _docker function, but I got stuck on this one.
> 
> I'm sure this must be very easy to do in zsh, I just can't figure out how..
> maybe someone can help me out?
> 
> thanks, happy coding everyone!
> 
> 

You could modify CURRENT and words in a custom completion function and
then just call _normal ("docker ls" is one word more than
"mydockerwrapper"):

_mydockerwrapper() {
  ((CURRENT++))
  words=(docker ls "${words[@]:1}")
  _normal
}
compdef _mydockerwrapper mydockerwrapper

Re: alias of completion

[Pier Paolo Grassi]

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YES that does it! thank you! I knew it must have to be very simple, I just
was missing some information..


2018-03-02 13:08 GMT+01:00 m0viefreak <m0viefreak.cm@googlemail.com>:

>
>
> On 02.03.2018 10:31, Pier Paolo Grassi wrote:
> > Hello guys, I just joined the list but I have been a zsh enthusiast for
> 15
> > years and since I discovered it it's always been the best work
> enviroment I
> > ever had.
> > One thing I was never been able to accomplish though, is: what if I want
> a
> > custom function, say:
> >
> > mydockerwrapper(){}
> >
> > behave, for completion's sake, like, let's say:
> >
> > docker ls
> >
> > so that if I try to complete after
> >
> > mydockerwrapper <TAB>
> >
> > I get the same suggestion that I would get after docker ls, and if I have
> >
> > mydockerwrapper xx <TAB>
> >
> > I get the same completion that I would get after  docker ls xx, and so
> on.
> >
> > -what I tried-
> >
> > I know that the completion function for the docker command is _docker,
> and
> > that I could associate my function to this completion function with
> >
> > compdef _docker mydockerwrapper
> >
> > but it doesn't seem possibile to pass one default argument to the
> > completion function in this way.
> >
> > So I tried defining my own completion function, and add one argument and
> > pass it to the _docker function, but I got stuck on this one.
> >
> > I'm sure this must be very easy to do in zsh, I just can't figure out
> how..
> > maybe someone can help me out?
> >
> > thanks, happy coding everyone!
> >
> >
>
> You could modify CURRENT and words in a custom completion function and
> then just call _normal ("docker ls" is one word more than
> "mydockerwrapper"):
>
> _mydockerwrapper() {
>   ((CURRENT++))
>   words=(docker ls "${words[@]:1}")
>   _normal
> }
> compdef _mydockerwrapper mydockerwrapper
>
>


-- 
Pier Paolo Grassi
email: pierpaolog@gmail.com
linkedin: https://www.linkedin.com/in/pier-paolo-grassi-19300217
fondatore: https://www.meetup.com/it-IT/Machine-Learning-TO

Re: alias of completion

[Joey Pabalinas]

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On Fri, Mar 02, 2018 at 01:08:09PM +0100, m0viefreak wrote:
> You could modify CURRENT and words in a custom completion function and
> then just call _normal ("docker ls" is one word more than
> "mydockerwrapper"):
> 
> _mydockerwrapper() {
>   ((CURRENT++))
>   words=(docker ls "${words[@]:1}")
>   _normal
> }
> compdef _mydockerwrapper mydockerwrapper

Holy hell, you don't know how long I've been trying to figure out
exactly that (but with systemctl instead of docker). At one point
I even to screw up so badly that when I did `scrs <TAB>` my computer
simply rebooted itself. Dumbfounded, I immediately tested it again
as soon as my OS booted to make sure I wasn't going crazy and (as you
probably saw coming from a mile away) promptly rebooted my computer
with another fateful <Tab>.

But this works *perfectly*.

I didn't ask the original question, but nonetheless thank you!

-- 
Joey Pabalinas

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Re: alias of completion

[Pier Paolo Grassi]

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Joey that’s hilarious... I can’t even imagine what kind of tests you did,
but some voodoo must have been involved... XD


Il giorno ven 2 mar 2018 alle 23:23 Joey Pabalinas <joeypabalinas@gmail.com>
ha scritto:

> On Fri, Mar 02, 2018 at 01:08:09PM +0100, m0viefreak wrote:
> > You could modify CURRENT and words in a custom completion function and
> > then just call _normal ("docker ls" is one word more than
> > "mydockerwrapper"):
> >
> > _mydockerwrapper() {
> >   ((CURRENT++))
> >   words=(docker ls "${words[@]:1}")
> >   _normal
> > }
> > compdef _mydockerwrapper mydockerwrapper
>
> Holy hell, you don't know how long I've been trying to figure out
> exactly that (but with systemctl instead of docker). At one point
> I even to screw up so badly that when I did `scrs <TAB>` my computer
> simply rebooted itself. Dumbfounded, I immediately tested it again
> as soon as my OS booted to make sure I wasn't going crazy and (as you
> probably saw coming from a mile away) promptly rebooted my computer
> with another fateful <Tab>.
>
> But this works *perfectly*.
>
> I didn't ask the original question, but nonetheless thank you!
>
> --
> Joey Pabalinas
>
-- 
Pier Paolo Grassi