Created by: rhencke
Before, the presence of untracked files caused Buck to return a dirty version, but those untracked files were not used in calculating the dirty version. This meant that creating the first untracked file caused the buck daemon to restart, but any subsequent modifications to any untracked files did not. Now, any change to files tracked or untracked (but not ignored) will affect the dirty version.
Quick way to see the behavior before and after:
git clean -fd # remove any untracked changes
./bin/buck # daemon starts/restarts
touch a
./bin/buck # daemon restarts
touch b
./bin/buck # previously, daemon does not restart. now, daemon restarts.(Sadly, a little slower, but overall still much faster than before combined with the previous change to re-use index.)