RE: replace text in files from buffer=*grep* ?

[Drew Adams]

> What functionality exists to automate replacing text from a GNU
> Emacs *grep* (results) buffer? What I mean, why I ask:
... 
> Wdired then applies the changes made from the Dired buffer to the
> objects it represents. So what I'd most like for my usecase would be
> to RLA on a *grep* buffer, allowing a Wdired-like workflow.
> 
> Is there something like that for *grep* buffers.

Here is one such, found by searching for `grep' on Emacs Wiki:
http://www.emacswiki.org/emacs/grep-edit.el

(Haven't tried it.)