XFAIL dexter tests on Darwin.

These fail parsing command line arguments.

GitOrigin-RevId: 8e406204418895f7b09d1a9a3f8037e741a43968
diff --git a/dexter/feature_tests/subtools/help/help.test b/dexter/feature_tests/subtools/help/help.test
index e008147..afc4652 100644
--- a/dexter/feature_tests/subtools/help/help.test
+++ b/dexter/feature_tests/subtools/help/help.test
@@ -1,3 +1,4 @@
+XFAIL: darwin
 Purpose:
     Check the `help` subtool runs.
 
diff --git a/dexter/feature_tests/subtools/list-debuggers/list-debuggers.test b/dexter/feature_tests/subtools/list-debuggers/list-debuggers.test
index c8f4a89..2f9feaa 100644
--- a/dexter/feature_tests/subtools/list-debuggers/list-debuggers.test
+++ b/dexter/feature_tests/subtools/list-debuggers/list-debuggers.test
@@ -1,3 +1,4 @@
+XFAIL: darwin
 Purpose:
     Check the `list-debuggers` subtool runs.
 
diff --git a/dexter/feature_tests/subtools/test/err_paren.cpp b/dexter/feature_tests/subtools/test/err_paren.cpp
index 25421f3..a688bb0 100644
--- a/dexter/feature_tests/subtools/test/err_paren.cpp
+++ b/dexter/feature_tests/subtools/test/err_paren.cpp
@@ -1,3 +1,4 @@
+// XFAIL: darwin
 // Purpose:
 //      Check that parsing bad commands gives a useful error.
 //          - Unbalanced parenthesis
diff --git a/dexter/feature_tests/subtools/test/err_paren_mline.cpp b/dexter/feature_tests/subtools/test/err_paren_mline.cpp
index 051ee12..477d05d 100644
--- a/dexter/feature_tests/subtools/test/err_paren_mline.cpp
+++ b/dexter/feature_tests/subtools/test/err_paren_mline.cpp
@@ -1,3 +1,4 @@
+// XFAIL: darwin
 // Purpose:
 //      Check that parsing bad commands gives a useful error.
 //          - Unbalanced parenthesis over multiple lines
diff --git a/dexter/feature_tests/subtools/test/err_syntax.cpp b/dexter/feature_tests/subtools/test/err_syntax.cpp
index 5092eb7..8e8e401 100644
--- a/dexter/feature_tests/subtools/test/err_syntax.cpp
+++ b/dexter/feature_tests/subtools/test/err_syntax.cpp
@@ -1,3 +1,4 @@
+// XFAIL: darwin
 // Purpose:
 //      Check that parsing bad commands gives a useful error.
 //          - Syntax error (misplaced ',')
diff --git a/dexter/feature_tests/subtools/test/err_syntax_mline.cpp b/dexter/feature_tests/subtools/test/err_syntax_mline.cpp
index 919528f..98daaa6 100644
--- a/dexter/feature_tests/subtools/test/err_syntax_mline.cpp
+++ b/dexter/feature_tests/subtools/test/err_syntax_mline.cpp
@@ -1,3 +1,4 @@
+// XFAIL: darwin
 // Purpose:
 //      Check that parsing bad commands gives a useful error.
 //          - Syntax error (misplaced ',') over multiple lines
diff --git a/dexter/feature_tests/subtools/test/err_type.cpp b/dexter/feature_tests/subtools/test/err_type.cpp
index 58a4f33..6b09aa9 100644
--- a/dexter/feature_tests/subtools/test/err_type.cpp
+++ b/dexter/feature_tests/subtools/test/err_type.cpp
@@ -1,3 +1,4 @@
+// XFAIL: darwin
 // Purpose:
 //      Check that parsing bad commands gives a useful error.
 //          - Type error (missing args)
diff --git a/dexter/feature_tests/subtools/test/err_type_mline.cpp b/dexter/feature_tests/subtools/test/err_type_mline.cpp
index 66e422e..cbb5b75 100644
--- a/dexter/feature_tests/subtools/test/err_type_mline.cpp
+++ b/dexter/feature_tests/subtools/test/err_type_mline.cpp
@@ -1,3 +1,4 @@
+// XFAIL: darwin
 // Purpose:
 //      Check that parsing bad commands gives a useful error.
 //          - Type error (missing args) over multple lines
diff --git a/dexter/feature_tests/unittests/run.test b/dexter/feature_tests/unittests/run.test
index d7f9d17..1662649 100644
--- a/dexter/feature_tests/unittests/run.test
+++ b/dexter/feature_tests/unittests/run.test
@@ -1,3 +1,4 @@
+XFAIL: darwin
 Purpose:
     Run DExTer unit tests.