ENH: Add sarge support

[westurner]

example::

pyline '"rm -f {0}; ln -s ../formulas/{0}-formula/{0}".format(w[8])'

[westurner]

This can almost be done with https://en.wikipedia.org/wiki/Xargs :

man xargs
xargs -I

[westurner]

This is also somewhat possible with el:

• | Docs: https://westurner.org/dotfiles/usage#el
• | Src: https://github.com/westurner/dotfiles/blob/develop/scripts/el

echo -e '1\n2\n3' | el -v -x 'echo "number {} #"'
echo -e '1\n2\n3' | el -v --each -x 'echo "number {} #"'
``