Hi,

At Sat, 15 Jan 2005 06:15:33 +0900,
Nicholas Van Weerdenburg wrote in [ruby-talk:126498]:
> I guess my question might be better phrased "why doesn't running the
> ruby interpreter with no input not default to interactive mode (irb)
> such as with the python interpreter".
> 
> I'm mostly curious for no practical reason. Just wondering if there is
> functionality or design benefits.

It's in the ToDo list.

  * Built-in Interactive Ruby.


Index: ruby.c =================================================================== RCS file: /cvs/ruby/src/ruby/ruby.c,v retrieving revision 1.94 diff -U2 -p -r1.94 ruby.c --- ruby.c 24 Sep 2004 05:53:41 -0000 1.94 +++ ruby.c 15 Jan 2005 05:34:34 -0000 @@ -782,5 +782,15 @@ proc_options(argc, argv) } else if (strlen(script) == 1 && script[0] == '-') { - load_stdin(); + if (!do_check && !do_loop && isatty(0) && isatty(1) && isatty(2) && + !NIL_P(rb_rescue2(rb_require, (VALUE)"irb", + (VALUE (*)())0, (VALUE)0, + rb_eLoadError, (VALUE)0))) { + require_libraries(); + ruby_eval_tree = NEW_CALL(NEW_LIT(rb_const_get(rb_cObject, rb_intern("IRB"))), + rb_intern("start"), 0); + } + else { + load_stdin(); + } } else {
-- Nobu Nakada