Regepxp-help: Replacing foo with bar but not foo.*

[Patrick Drechsler]

Hi,

how do I replace the term `foo' with `bar' when `foo' is followed
by a conditional term? Or what do I have to pass as argument to
`M-x replace-string'?

the rule I'm trying to imply is "replace foo if it is not
followed by a dot".

INPUT

foo jfkda
foo.bar fdjak

OUTPUT

fooMYREPLACEMENT jfkda
foo.bar fdjak


TIA

Patrick
-- 
"If you choke a smurf, what color does it turn?"