Feature request: apply rules to textual matches about jarjar HOT 5 OPEN

I've also fallen foul of this.  I have lots of Spring XML files with class 
string
literals. The packages have been renamed by jarjar but not these config files. I
would suggest this is a fairly high priority request?

I'm voting for it.

My use case is that I'd like to have java source files also string-replaced 
based on
the rule. This way sources correspond to compiled classes and IDEs don't have
problems with browsing source code / javadocs.

Another good one is JAR files that implement Sun's Service Provider mechanism.  
It used 
to be a sun.misc. API, but now it's been officially standardized into 
java.util.ServiceLoader in Java 6 and beyond.  These JAR files have textual 
references 
to FQCNs in the META-INF directory tree.

Not much happening with this issue. Do maintainers want one of us to take a 
stab at
the source code and contribute a patch?

I've done a basic implementation of this feature here: 
https://github.com/szczepiq/jarjar/commits/master

Feel free to pull :)