Kile ⇒ Find In Project regex not matching

[daviddoria]

If I do this:

grep -ri "\.'" .

in a terminal to search for the literal .' (dot apostrophe) , it seems to work and returns some hits. However, inside of Kile, using the Find in Files or Find in Project functions which use grep it returns no hits (though searching other normal strings does work, so I know it is searching the right files). Is there a different way I could specify this string? I also tried

.'
\.\'
\\.\\'
".'"
"\.\'"
"\\.\\'"

but they did not work either.

Any suggestions on how to search for this?

Thanks,

David