Glob-mapper functions added like FileTree

Wanted to get people's thoughts on glob-mapping of files using the File-Tree-Walker style interface.  (This is an idea I got from SBT)


Imagine the following code:

for {
   file <-   pwd / ** / "*.log"  //The spaces are necessary so we don't make a comment!
   lines <- file.readLines
   if line startsWith "[ERROR]"
} yield line

for pulling out all lines from all log files under the current working directory or any sub-directory.


Another example:

for {
   file <- pwd /  * ".log"
   lines <- file.readLines
   if line startsWith "[ERROR]"
} yield line


This would do something similar to the above but only for one directory.


I'm not exactly happy with the operators used, but I do like the idea.    Any thoughts?


- Josh