Built-in magic commands do not escape spaces in path

[carlosperate]

It does work with shell commands (e.g. !pip instead of %pip), but when using the magic commands spaces are not escaped.

In macOS Big Sur, a brand new virtualenv with spaces in its path:

$ pip list
Package          Version
---------------- -------
appnope          0.1.2  
backcall         0.2.0  
decorator        5.0.6  
ipykernel        5.5.3  
ipython          7.22.0 
ipython-genutils 0.2.0  
jedi             0.18.0 
jupyter-client   6.1.12 
jupyter-core     4.7.1  
parso            0.8.2  
pexpect          4.8.0  
pickleshare      0.7.5  
pip              19.2.3 
prompt-toolkit   3.0.18 
ptyprocess       0.7.0  
Pygments         2.8.1  
PyQt5            5.15.4 
PyQt5-Qt5        5.15.2 
PyQt5-sip        12.8.1 
python-dateutil  2.8.1  
pyzmq            22.0.3 
qtconsole        5.0.3  
QtPy             1.9.0  
setuptools       41.2.0 
six              1.15.0 
tornado          6.1    
traitlets        5.0.5  
wcwidth          0.2.5  

$ ipython
Python 3.8.2 (default, Jun  2 2020, 13:57:42) 
Type 'copyright', 'credits' or 'license' for more information
IPython 7.22.0 -- An enhanced Interactive Python. Type '?' for help.

In [1]: !pip --version
pip 19.2.3 from /Users/microbit-carlos/workspace/deleteme/really-delete/path with spaces/.venv/lib/python3.8/site-packages/pip (python 3.8)

In [2]: %pip --version
zsh:1: no such file or directory: /Users/microbit-carlos/workspace/deleteme/really-delete/path
Note: you may need to restart the kernel to use updated packages.

In [3]: pip --version
zsh:1: no such file or directory: /Users/microbit-carlos/workspace/deleteme/really-delete/path
Note: you may need to restart the kernel to use updated packages.

Closest open issue i've found is this one, but in that it looks like the spaces are escaped incorrectly? https://github.com/ipython/ipython/issues/11138

[carlosperate]

It can also fail the same way if a path is not quoted when running shell command:

$ ipython
Python 3.8.2 (default, Jun  2 2020, 13:57:42) 
Type 'copyright', 'credits' or 'license' for more information
IPython 7.22.0 -- An enhanced Interactive Python. Type '?' for help.

In [1]: import sys

In [2]: !{sys.executable} -m pip --version
zsh:1: no such file or directory: /Users/microbit-carlos/workspace/deleteme/really-delete/path

In [3]: !'{sys.executable}' -m pip --version
pip 19.2.3 from /Users/microbit-carlos/workspace/deleteme/really-delete/path with spaces/.venv/lib/python3.8/site-packages/pip (python 3.8)

[scw]

I think this bug can be marked as fixed.