CLI2: Fixed bug in ::findCommand

- If an argument is an exact match for a command ('projects'), it is a command.
- If an argument is not an exact match for command ('project'), but is an exact
  match for an attribute, it is not a command.
- If an argument fails the above tests, but canonicalizes to a command, it is a
  command.

src/CLI2.cpp

@@ -807,9 +807,13 @@ bool CLI2::findCommand ()
     //   task project=foo list
     //        ^cmd        ^cmd
     //        ^attribute
-    if (canonicalize (canonical, "cmd", raw) &&
-        ! exactMatch ("attribute", raw))
-    {
+    if (exactMatch ("cmd", raw))
+      canonical = raw;
+    else if (exactMatch ("attribute", raw))
+      continue;
+    else if (! canonicalize (canonical, "cmd", raw))
+      continue;
+
     a.attribute ("canonical", canonical);
     a.tag ("CMD");
 
@@ -822,7 +826,6 @@ bool CLI2::findCommand ()
     // Stop and indicate command found.
     return true;
   }
-  }
 
   // Indicate command not found.
   return false;