Edit the directory (emacs goes into dired mode), mark the files, and
use the Q command in dired.

"Per Nordlöw" <per@foi.se> writes:
> Is there any way to perform an interactive replace (query-replace) of
> regular expressions recursively in all or some (specified by a regular
> expression) files present in a directory tree.

-- 
-- 
Ken Goldman   kgold@watson.ibm.com   914-784-7646