fuel/core — comment on commit 142ee8b0c52dbb7591b35e93b4cb7216d49946ea
File: classes/finder.php line 289
By crynobone:

Previously in ```\Fuel::find_file()``` we would use strtolower to ensure the filename is always lowercase: ```$path = $directory.DS.strtolower($file).$ext;```

Without it, possible bug might pop-up from everywhere including https://github.com/fuel/core/issues/567