Find and replace texture function?

So I was trying to block out a map today using a custom texture and I thought to myself 'I wonder if DB has a find and replace texture function'. Well it's been a couple days and I haven't found it. . . LOL Nor does wad author (no surprise there) but I was wondering if anyone else had found an editor with this function?
Worldcraft spoiled me :/

Try this app, it seems to do what you want.

Well,
Doom Builder does have a 'find and replace' function. At least version 1.68 does... it's under 'edit'(or ctrl+H).