I've got the linux-4.17 kernel tree around, 61,322 files. My desktop is running ubuntu-18.04, is an i5-3570, and has a fairly quick intel SSD. Running "blush

I've got the linux-4.17 kernel tree around, 61,322 files. My desktop is running ubuntu-18.04, is an i5-3570, and has a fairly quick intel SSD. Running "blush -R -i FunctionName ." takes 15.090 seconds and finds two files. Running "ag -i FunctionName", finds one file, missing one in .clang-format. Running "ag -i -u FunctionName", finds two files and makes 0.64 seconds. So somewhere around 20-25x faster.