Add a few FIXMEs re: better use of xfail

Author: EliahKagan

Diff for: test/test_config.py

@@ -100,6 +100,7 @@ def test_includes_order(self):
             # values must be considered as soon as they get them
             assert r_config.get_value("diff", "tool") == "meld"
             try:
+                # FIXME: Split this assertion out somehow and mark it xfail (or fix it).
                 assert r_config.get_value("sec", "var1") == "value1_main"
             except AssertionError as e:
                 raise SkipTest("Known failure -- included values are not in effect right away") from e

Diff for: test/test_util.py

@@ -85,6 +85,7 @@ def setup(self):
             "array": [42],
         }
 
+    # FIXME: Mark only the /proc-prefixing cases xfail, somehow (or fix them).
     @pytest.mark.xfail(
         reason="Many return paths prefixed /proc/cygdrive instead.",
         raises=AssertionError,
@@ -103,7 +104,7 @@ def test_cygpath_ok(self, case):
     @skipUnless(sys.platform == "cygwin", "Paths specifically for Cygwin.")
     @ddt.data(
         (r"./bar", "bar"),
-        (r".\bar", "bar"),
+        (r".\bar", "bar"),  # FIXME: Mark only this one xfail, somehow (or fix it).
         (r"../bar", "../bar"),
         (r"..\bar", "../bar"),
         (r"../bar/.\foo/../chu", "../bar/chu"),