Add bash shell function to make python work like it should.

Add bash shell function to make python work like it should.

This uses the virtual /proc filesystem to identify when the user runs
`python` without redirecting stdout/stdin. If this is the case, we run
`python -i` instead. Otherwise, or if there are arguments, we run it
verbatim.

R=dnj@chromium.org
BUG=598956
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=299681

[iannucci, 2016-04-02 07:07:54]

PTAL. This is needed because our CPython's 'isatty' function is broken under the
msys shell. Right now when you run `python` under the msys shell, it appears to
just hang, but in fact it thinks its reading a program from stdin.

[iannucci, 2016-04-03 00:20:15]

On 2016/04/02 at 07:07:54, iannucci wrote:
> PTAL. This is needed because our CPython's 'isatty' function is broken under
the msys shell. Right now when you run `python` under the msys shell, it appears
to just hang, but in fact it thinks its reading a program from stdin.

Unfortunately, I haven't figured out how to get it's 'readline'-like behaviors
to work under the msys shell yet (so right now cursoring up actually moves the
input cursor up, instead of selecting the previous input line)

[dnj, 2016-04-03 00:59:35]

lgtm, can you add a quick comment to the top of this file explaining why you
need it? The CL description is fine.

[iannucci, 2016-04-04 21:22:45]

Description was changed from

==========
Add bash shell function to make python work like it should.

This uses the virtual /proc filesystem to identify when the user runs
`python` without redirecting stdout/stdin. If this is the case, we run
`python -i` instead. Otherwise, or if there are arguments, we run it
verbatim.

R=dnj@chromium.org
BUG=598956
==========

to

==========
Add bash shell function to make python work like it should.

This uses the virtual /proc filesystem to identify when the user runs
`python` without redirecting stdout/stdin. If this is the case, we run
`python -i` instead. Otherwise, or if there are arguments, we run it
verbatim.

R=dnj@chromium.org
BUG=598956

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=299681
==========

[iannucci, 2016-04-04 21:22:46]

Committed patchset #3 (id:40001) manually as 299681.

[iannucci, 2016-04-04 21:23:08]

(add comment: done)