Use REMAINDER for --run-script to allow passing arbitrary arguments

[jdufresne]

Regression mistakenly introduced in f3dd542.

[pwaller]

Reading the argparse docs, I don't understand this one, can you explain it?

[jdufresne]

Before this change, the following command:

$ pyprof2calltree --run-script myscript.py --kcachegrind

Would run myscript.py without any arguments and then pyprof2calltree would launch kcachegrind.

After this change it will run myscript.py with the argument --kcachegrind.

Using the REMAINDER argument means all remaining arguments after --run-script will be assigned to args.script.

Basically, in the example above, we can't assume that --kcachegrind is for pyprof2calltree and not for myscript.py. So, err on the side of the script. To run the example above with --kcachegrind as an argument to pyprof2calltree, one would need to pass it before --run-script. e.g.:

$ pyprof2calltree --kcachegrind --run-script myscript.py

From the Python docs:

All the remaining command-line arguments are gathered into a list. This is commonly useful for command line utilities that dispatch to other command line utilities

This describes pyprof2calltree's use case exactly.

Does that make sense? I can try to provide additional details if you think it will help.