Merge "Add mksort implementation"

    return out_words if type(s) == "list" else " ".join(out_words)

def _mksort(input):

    """Emulate Make's sort.

    This is unique from a regular sort in that it also strips

    the input, and removes duplicate words from the input.

    """

    input = sorted(__words(input))

    result = []

    for w in input:

        if len(result) == 0 or result[-1] != w:

            result.append(w)

    return result

def _mkstrip(s):

    """Emulates Make's strip.

    mkerror = _mkerror,

    mkpatsubst = _mkpatsubst,

    mkwarning = _mkwarning,

    mksort = _mksort,

    mkstrip = _mkstrip,

    mksubst = _mksubst,

    notdir = _notdir,

        fail("Expected '%s', got '%s'" % (expected, actual))

# Unit tests for non-trivial runtime functions

assert_eq(["a", "b", "c"], rblf.mksort("b a    c c"))

assert_eq(["a", "b", "c"], rblf.mksort(["b", "a", "c", "c"]))

assert_eq("", rblf.mkstrip(" \n \t    "))

assert_eq("a b c", rblf.mkstrip("  a b   \n  c \t"))

assert_eq(1, rblf.mkstrip(1))