eshell completers?

[clemens fischer]

i tried eshell's info pages (as lacking^Wcontained in the emacs CVS
version), googled for it, even read thru the sources.

i need an eshell completer for the type of external commands that
issue all kinds of helpful information themselves that just needs to
be parsed out.  prime candidates:  "./configure --help", "openssl
-help" or "[g]make" (if simply collecting all words that start off a
line in the Makefile, ending in a colon).  i got the completers ready
for the bash, but don't know how to get it done in eshell.

any pointers?

  clemens