Tab completion under pew?

[ColMcp]

macOS 10.12.6 Python 3.6.2 pew 0.1.26

When I run the CPython REPL from a standard shell tab completion is operative. When I run it in a sub-shell invoked by pew tab completion is not operative.

Is this a bug, or a configuration failure on my part?

[kennethreitz]

Confirmed here.

[kennethreitz]

the following code activates tab completion:

import rlcompleter, readline
readline.parse_and_bind('tab: complete')

[kennethreitz]

https://github.com/kennethreitz/pipenv/issues/497

[ColMcp]

The above parse_and_bind() call didn't work for me but
readline.parse_and_bind('bind ^I rl_complete') did work.

site.py from the Python library has the following code in enablerlcompleter()

# Reading the initialization (config) file may not be enough to set a
# completion key, so we set one first and then read the file.
readline_doc = getattr(readline, '__doc__', '')
if readline_doc is not None and 'libedit' in readline_doc:
    readline.parse_and_bind('bind ^I rl_complete')
else:
    readline.parse_and_bind('tab: complete')

Maybe we have different arrangements for accessing a readline library on our respective machines even though we are both using macOS.

[berdario]

This reminds me of #90 :/

Unfortunately, this is another bit of behavior due to virtualenv (and that would be solved by a rewrite)

(there might be actually another option to prevent this, but it's late and I haven't looked deeply into this)

Apparently the rewrite is not happening 😞 . But maybe a minimal rewrite of virtualenv, with just the few features required by us, might be feasible (we wouldn't have this concern, since we could invoke it directly as a library, and avoid conflicts/pollution in the PATH)

[erinxocon]

@berdario Want to vendorize virtualenv?

[berdario]

You mean vendorize and trying to patch this ourselves?

I'd rather try to fix it upstream, and add a version bound on the patch that fixed this would be better

Or is there another advantage to vendorizing it that I'm missing?

[erinxocon]

No, vendorizing just lets us have more control I suppose, but it prevents us from merging any fixes the maintainers put in place. You way makes sense.

[nealmcb]

Is this fixed upstream now? I can't reproduce it.

Using Ubuntu 20.04, Python 3.8.10, Pew 1.2.0, I do

pew mktmpenv
python
imp<TAB>

and it autocompletes to import

[mrx23dot]

please add tab completion like
sudo systemctl s<tab>
very handy