Lex: forcing scan?

Question

I'm writing a fairly simple program with LEX, that after parsing a few files, parses input from a user.

Now, with the files, everything works like a charm. However, when it comes to user input from stdin, LEX rules won't run until an EOF (via ctrl+D) character is sent. When I do that, LEX parses all I wrote and then waits for more input. A second consecutive EOF terminates the scanner.

Thing is, I want the program to react on \n, outputting some data. Is there a way to force a scan from inside a rule, or to configure LEX buffering somehow to match this behaviour?

Answer 1

Solved! This did the trick:

%option always-interactive

I'm leaving this here for future reference, in case... well, who knows.