Ludovic Courtès (2015-06-15 01:07 +0300) wrote:

> Alex Kost <alezost@gmail.com> skribis:
>
>> Ludovic Courtès (2015-06-10 22:44 +0300) wrote:
>>
>> [...]
>>> Actually ‘sudo’ completion works well by default; e.g., “sudo ha<TAB>”
>>> completes to “sudo halt”.  Could it be that there’s another way to
>>> achieve that?
>>
>> ‘sudo’ completions don't work by default (did you check "emacs -Q"?)
>> I think you are using some additional package for that.
>
> Indeed, this must be provided by the ‘pcmpl-args’ package.

Thanks for the pointer, that's a great package!  Its completions don't
use a common 'pcomplete-here' function (and don't rely on
'pcomplete-args' and other global variables).  Instead the own
"pcmpl-args" code base (and it is big!) is used.

So (analogously to 'pcomplete/sudo') the following function may be used
to complete "pre-inst-env" properly: