Hi internals, For historical reasons, debug_print_backtrace() and exceptions implemented their own logic for formatting backtraces. I don't think there's any particular reason to have different output from both, so I've put up https://github.com/php/php-src/pull/6977 to use the much more widely used exception formatting for debug_print_backtrace() as well. The tests there should illustrate how the output changes.
Are there any concerns with changing the formatting of debug_print_backtrace()? Regards, Nikita
