[ajays]

Wait:

    nip 'function(l) { return /^var/.test(l); }'

is supposed to be better than

    egrep '^var'

?

[fineline]

I think he was demonstrating function syntax. This shorter version also works:

nip 'return /^var/.test(line)'

An implicit return, added if the input doesn't match /[function|return]/ would be nice, along with aliasing line as l, then you'd have:

nip '/^var/.test(l)'