traverse a directory

[Xah Lee <xah@xahlee.org>]

if i want to recurse into a directory, do i have to write my own?

e.g. i want to apply a file processing function to all files in a dir
and subdirs. Somethnig like

(apply 'process-my-file "/Users/xah/emacs/" "\.html$")

I noticed that directory-files only list the dir file. Someone told me
there's a directory-files-recur but that doesn't seems to be in emacs.

thx in advance.

  Xah
  xah@xahlee.org
\xAD\xF4 http://xahlee.org/