[cleanup] Minor improvements to error and debug messages

yt_dlp/__init__.py

@@ -795,15 +795,15 @@ def main(argv=None):
         _real_main(argv)
     except DownloadError:
         sys.exit(1)
-    except SameFileError:
-        sys.exit('ERROR: fixed output name but more than one file to download')
+    except SameFileError as e:
+        sys.exit(f'ERROR: {e}')
     except KeyboardInterrupt:
         sys.exit('\nERROR: Interrupted by user')
-    except BrokenPipeError:
+    except BrokenPipeError as e:
         # https://docs.python.org/3/library/signal.html#note-on-sigpipe
         devnull = os.open(os.devnull, os.O_WRONLY)
         os.dup2(devnull, sys.stdout.fileno())
-        sys.exit(r'\nERROR: {err}')
+        sys.exit(f'\nERROR: {e}')
 
 
 __all__ = ['main', 'YoutubeDL', 'gen_extractors', 'list_extractors']