make rlwrap accept pre-given output even when ENTER is pressed before…

… first cooking time

src/main.c

@@ -335,12 +335,10 @@ main_loop()
 	}	
 	if (!skip_rlwrap()) {                        /* ... or else, it is time to cook the prompt */
 	  if (pre_given && accepted_lines == 0) {
-	    saved_rl_state.input_buffer = mysavestring(pre_given); /* stuff pre-given text into edit buffer */
-	    saved_rl_state.point =  strlen(pre_given);
+            /* input_buffer and point have already been set in init_readline() */
 	    DPRINTF0(DEBUG_READLINE, "Starting line edit (because of -P option)");
 	    within_line_edit = TRUE;
 	    restore_rl_state();
-
 	    continue;
 	  }
 

src/readline.c

@@ -83,7 +83,11 @@ init_readline(char *prompt)
 
   rl_catch_signals = FALSE;
   rl_catch_sigwinch = FALSE;
-  saved_rl_state.input_buffer = mysavestring("");
+  saved_rl_state.input_buffer = mysavestring(pre_given ? pre_given : ""); /* Even though the pre-given input won't be displayed before the first 
+                                                                             cooking takes place, we still want it to be accepted when the user 
+                                                                             presses ENTER before that (e.g. because she already knows the 
+                                                                             pre-given input and wants to accept that) */
+  saved_rl_state.point = strlen(saved_rl_state.input_buffer);
   saved_rl_state.raw_prompt = mysavestring("");
   saved_rl_state.cooked_prompt = NULL;