ffap-kpathsea-expand-path

ffap-kpathsea-expand-path is a compiled Lisp function in `ffap.el'.

(ffap-kpathsea-expand-path PATH)

Replace each "//"-suffixed dir in PATH by a list of its subdirs.
The subdirs begin with the original directory, and the depth of the
search is bounded by `ffap-kpathsea-depth'. This is intended to mimic
kpathsea, a library used by some versions of TeX.