Re: [GSOC][PATCH v2] t1300: convert "test -f" with "test_path_is_file"

Adrian Wijaya [off-list ref] writes:

 	test "z$(git config --file=notyet test.frotz)" = znitfol &&

We see 130+ instances of this rather antiquated construct that
presumably avoids to compare an empty string with something else
using "test X = Y" tool.  It might have been a good idea in 2005 (I
do not remember why we started doing this), but perhaps it is time
to clean them up by listing it as another microproject idea for the
next year?