The main impetuous was "\" is the namespace character, so I want namespace errors to not have double backslashes everywhere.
After finding that, it turned out we were escaping all exceptions in the command line, which is wrong. We only want the escaping when we are in server mode (emulating apache)
I basically pushed what we were doing in ##error_log## down to ##Logger::Log##.
Various unary operators have arbitrary effects. Dont assume we
know anything about locals when we see one.
Fix an expect for differences in line numbers.
Prevent a use of an undefined constant from being optimized away.