strange behavior of Ctrl-C

[saks]

When debugging lua code, it does nothing, just prints ^C. When debugging nginx, it prints ^C and then nginx handles SIGINT.

Most reasonable behavior would be to:

1. show next prompt line
2. move cursor to the next line

[saks]

https://cnswww.cns.cwru.edu/php/chet/readline/readline.html#SEC44 http://stackoverflow.com/questions/16828378/readline-get-a-new-prompt-on-sigint