filtered execution ...

Hello!

My question is really simple.  Everybody knows the VI ":g" command.  It executes
an "ex" command on every line that match a pattern in the specified
region (or the whole) of the text edited.

Is there something like this in xemacs?

I don't think vile or viper, the VI-emulation modes; but something more capable.
Knowing the knowledge of our favourite editor; I could imagine a
command that executes an another command (_not_ just replace;
"join-lines", for example) on each line matching a regexp.

Tamas