[Nano-devel] Signal safety Issue

[Daniel Kozovsky]

In ‘nano.c‘ line 1294 in signal handler ‘do_continue‘ is used function 
ungetch(KEY_FLUSH). I believe that this function is not asynchronous-safe, so 
it should not be used in signal handler.

Also in text.c line 1107 in signal handler ‘cancel_command‘ is used function 
nperror("kill"). This function calls function perror, which is 
asynchronous-unsafe, so this also should not be used in signal handler.

I am sorry, if it is not a bug,
thank you.