how does the scoping works? From the homepage: import os text := os.read_file('app.log') or { eprintln('failed to read the file: ${err}')

how does the scoping works? From the homepage: import os text := os.read_file('app.log') or { eprintln('failed to read the file: ${err}') return } lines := text.split_into_lines() for line in lines { if line.starts_with('DEBUG:') { println(line) } } Is lines empty or program exited after the error at `app.log`