Bug 13778 – Flush stream when std.stdio.writeln() is called

This is an enhancement request to flush the stdio stream whenever std.stdio.writeln is called (but not for std.stdio.write). The problem this is causing, is for example that when running D programs under Eclipse (which creates its own console), no flushing is done when a newline is received. According to this SO question: http://stackoverflow.com/questions/19498040/eclipse-console-writes-output-only-after-the-program-has-finished , Adam D Ruppe has commented the following: "I'm not entirely sure what's going on here, but I think the line buffering only happens if the receiving end is a regular terminal. Otherwise, it gets the same buffering as any other file (because it likely is any other file). With Eclipse, again I'm guessing, it is probably talking to the eclipse process through a pipe, and that isn't registering as an interactive terminal so it goes back to full buffering." As a note of interest, Java's `System.out.println()` has the behavior requested here, it does flushing automatically at the end of the call.

*** This issue has been marked as a duplicate of issue 15786 ***