Currently it is possible to have an infinite loop with updates to the log file when watch is enabled:

1. A message is written to the log file
2. The watch feature detects that the log file has been modified
3. Something is triggered in response (e.g. on-load hook command, introduced in Add on-load hook #2010, is called)
4. The above step writes a message to the log file as part of its execution

This can be reproduced using the following minimal config file:

set watch true

# do nothing, just cause an entry to be written to the log file
cmd on-load &true