#!/bin/sh

# Find all files below cwd whose names end with one of a set of
# extensions.  Example usage:
#
#   $ extfind txt org ltx
#   ./foo/bar/blah.txt
#   ./baz/qux/emax4evah.org
#   ./quux/thankyoudonandleslie.ltx
#   ./projects/jrandom/README.txt
#   ./also/note/that/matches-are-case-insensitive.TXT
#   $
#
# Don't specify the dot before the extension.  We define a filename's
# extension as everything following the final dot in its basename.

EXTS=$(echo -n "$@" | sed -e 's/[[:space:]]/|/g')

find . -regextype egrep -iregex ".*\.(${EXTS})$" -print