patch 8.0.0018

Problem:    When using ":sleep" channel input is not handled.
Solution:   When there is a channel check for input also when not in raw mode.
            Check every 100 msec.

src/ui.c

@@ -352,13 +352,23 @@ ui_new_shellsize(void)
 
     void
 ui_breakcheck(void)
+{
+    ui_breakcheck_force(FALSE);
+}
+
+/*
+ * When "force" is true also check when the terminal is not in raw mode.
+ * This is useful to read input on channels.
+ */
+    void
+ui_breakcheck_force(int force)
 {
 #ifdef FEAT_GUI
     if (gui.in_use)
 	gui_mch_update();
     else
 #endif
-	mch_breakcheck();
+	mch_breakcheck(force);
 }
 
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