The File Watcher That Looked Like a Permissions Problem
A sudo prompt, a macOS privacy dialog, and an EMFILE crash — three failures on a locked-down Mac that all look like missing admin rights. None of them is.
macos
Your File Watcher Deleted the File You Just Saved
Mirror a folder with delete-on-delete enabled, hit Save in your editor, and watch the target file disappear. The bug isn’t in the watcher — it’s that saving a file, on most editors, is a delete followed by a rename.