Both of these should pass, but they currently fail:

assert("a\n".splitLines() == ["a", ""]);
assert("a\n".splitLines() != ["a"]);

This is inconsistent with both "\na".splitLines() and with split(str, delim), as demonstrated here:

----------------------------------
import std.stdio;
import std.string;

void main()
{
//	assert("a\n".splitLines() == ["a", ""]);
	assert("a\n".splitLines() != ["a"]);
	
	foreach(str; ["a", "a\n", "\na"])
	{
		writefln("\nstr: '%s'", str);
		foreach(i, line; str.splitLines())
			writeln(i, ": ", line);
	}

	foreach(str; ["a", "a,", ",a"])
	{
		writefln("\nstr: '%s'", str);
		foreach(i, line; str.splitLines())
			writeln(i, ": ", line);
	}
}
----------------------------------

str: 'a
b'
0: a
1: b

str: 'a
b
'
0: a
1: b

str: '
a
b'
0:
1: a
2: b

str: 'a,b'
0: a
1: b

str: 'a,b,'
0: a
1: b
2:

str: ',a,b'
0:
1: a
2: b
----------------------------------