dirstate-entry: add a `tracked` property

dirstate-entry: add a `tracked` property

This abstract the individual `state` value and has a clear semantic.

Differential Revision: https://phab.mercurial-scm.org/D10973

--- a/mercurial/cext/parsers.c	Sun Jul 04 01:59:41 2021 +0200
+++ b/mercurial/cext/parsers.c	Sun Jul 04 02:12:54 2021 +0200
@@ -158,6 +158,15 @@
 	return PyBytes_FromStringAndSize(&self->state, 1);
 };
 
+static PyObject *dirstatetuple_get_tracked(dirstateTupleObject *self)
+{
+	if (self->state == 'a' || self->state == 'm' || self->state == 'n') {
+		Py_RETURN_TRUE;
+	} else {
+		Py_RETURN_FALSE;
+	}
+};
+
 static PyObject *dirstatetuple_get_added(dirstateTupleObject *self)
 {
 	if (self->state == 'a') {
@@ -214,6 +223,7 @@
 
 static PyGetSetDef dirstatetuple_getset[] = {
     {"state", (getter)dirstatetuple_get_state, NULL, "state", NULL},
+    {"tracked", (getter)dirstatetuple_get_tracked, NULL, "tracked", NULL},
     {"added", (getter)dirstatetuple_get_added, NULL, "added", NULL},
     {"merged_removed", (getter)dirstatetuple_get_merged_removed, NULL,
      "merged_removed", NULL},

--- a/mercurial/dirstate.py	Sun Jul 04 01:59:41 2021 +0200
+++ b/mercurial/dirstate.py	Sun Jul 04 02:12:54 2021 +0200
@@ -1313,7 +1313,7 @@
             size = t[2]
             time = t[3]
 
-            if not st and state in b"nma":
+            if not st and t.tracked:
                 dadd(fn)
             elif state == b'n':
                 if (

--- a/mercurial/pure/parsers.py	Sun Jul 04 01:59:41 2021 +0200
+++ b/mercurial/pure/parsers.py	Sun Jul 04 02:12:54 2021 +0200
@@ -87,6 +87,11 @@
         return self._state
 
     @property
+    def tracked(self):
+        """True is the file is tracked in the working copy"""
+        return self._state in b"nma"
+
+    @property
     def added(self):
         """True if the file has been added"""
         return self._state == b'a'