Matching word boundaries in Text.Regexp

[Bernd Holzmüller]

I would like to match word boundaries in a regular expression but this
doesn't seem to work with Text.Regex in GHC 6.4.2.

The regular expression looks something like: "\\b(send|receive)\\b" to
match either the keyword send or the keyword receive but not the word
sending. Neither works \< and \> for matching the beginning and end of a
word.

Thanks for any help,
Bernd