bazel run bash completion improvement

[zimbatm]

Description of the problem / feature request:

When running a command like this:

$ bazel run //foo -- -i /home/zimbatm/bar<tab>

The bash-completion is not able to complete the path of the command. It would be nice if by default it would assume that extra commands could be paths.

Feature requests: what underlying problem are you trying to solve with this feature?

Making it easier to use bazel in bash with the completions enabled.

Bugs: what's the simplest, easiest way to reproduce this bug? Please provide a minimal example if possible.

I think that the description already does that.

What operating system are you running Bazel on?

Ubuntu 18.04

What's the output of bazel info release?

Replace this line with your answer.

If bazel info release returns "development version" or "(@non-git)", tell us how you built Bazel.

release 2.1.0- (@non-git)

What's the output of git remote get-url origin ; git rev-parse master ; git rev-parse HEAD ?

This is on a private repository.

Have you found anything relevant by searching the web?

#9358 might be related to this issue?

Any other information, logs, or outputs that you want to share?

No

[zimbatm]

What can I do to help move this forward? :-)

[philwo]

What can I do to help move this forward? :-)

Feel free to send a PR that improves this. :)