On nginx: if I open the error log, select all (in emacs) and cut, save, php errors stop logging to that file completely. If I restart nginx, they begin logging again. If I delete the files line-by-line (Control+K), the errors still save as expected. There are no changes anywhere to the file ownership or permissions. What could that "select all"+cut be doing that causes the errors to stop logging?
Thanks for any leads.