Set default priority of tasks to 'M' level

Previously, unprioritized tasks were set below all other tasks. This
change sets unprioritized tasks directly in the middle of all task
prioritizations.

test/data/SorterTest2-result.txt

@@ -1,3 +1,5 @@
+(N) A low priority task
+An unprioritized task
 (C) Useless
 (B) Minor
 (A) Important

test/data/SorterTest2.txt

@@ -2,3 +2,5 @@
 (C) Useless
 (A) Important
 (A) Another important task star:1
+An unprioritized task
+(N) A low priority task

test/data/SorterTest3-result.txt

@@ -2,3 +2,5 @@
 (A) Another important task star:1
 (B) Minor
 (C) Useless
+An unprioritized task
+(N) A low priority task

test/data/SorterTest3.txt

@@ -2,3 +2,5 @@
 (C) Useless
 (A) Important
 (A) Another important task star:1
+(N) A low priority task
+An unprioritized task

test/test_list_format.py

@@ -495,9 +495,9 @@ x 11 months ago
         result = """{C}
 {C}
 {D}
+
+
 {Z}
-
-
 """
         self.assertEqual(self.output, result)
 
@@ -508,9 +508,9 @@ x 11 months ago
         result = """%pC%p
 %pC%p
 %pD%p
+
+
 %pZ%p
-
-
 """
         self.assertEqual(self.output, result)
 
@@ -521,9 +521,9 @@ x 11 months ago
         result = """CC
 CC
 DD
+
+
 ZZ
-
-
 """
         self.assertEqual(self.output, result)
 
@@ -536,9 +536,9 @@ ZZ
         result = """C  C
 C  C
 D  D
+
+
 Z  Z
-
-
 """
         self.assertEqual(self.output, result)
 
@@ -552,9 +552,9 @@ Z  Z
         result = """C   C
 C   C
 D   D
+
+
 Z   Z
-
-
 """
         self.assertEqual(self.output, result)
 
@@ -567,9 +567,9 @@ Z   Z
         result = """   C
    C
    D
+
+
    Z
-
-
 """
         self.assertEqual(self.output, result)
 

topydo/lib/Sorter.py

@@ -63,7 +63,7 @@ FIELDS = {
         label='Length',
     ),
     'priority': Field(
-        sort=(lambda t: t.priority() or 'ZZ'),
+        sort=(lambda t: t.priority() or 'M'),
         group=(lambda t: t.priority() or 'None'),
         label='Priority',
     ),