Enhancement - en passant "done"

- When marking task(s) as done, it is now possible to modify them
  at the same time.

src/TDB.cpp

@@ -280,6 +280,7 @@ bool TDB::completeT (const T& t)
   for (it = all.begin (); it != all.end (); ++it)
     if (task.getId () == it->getId ())
     {
+      *it = t;
       it->setStatus (T::completed);
 
       char endTime[16];

src/command.cpp

@@ -570,31 +570,56 @@ std::string handleStop (TDB& tdb, T& task, Config& conf)
 ////////////////////////////////////////////////////////////////////////////////
 std::string handleDone (TDB& tdb, T& task, Config& conf)
 {
+  int count = 0;
   std::stringstream out;
-
   std::vector <T> all;
   tdb.allPendingT (all);
+
   std::vector <T> filtered = all;
   filterSequence (filtered, task);
-
-  foreach (t, filtered)
+  foreach (seq, filtered)
   {
-    t->setStatus (T::completed);
-    if (!tdb.completeT (*t))
+    if (seq->getStatus () == T::pending)
+    {
+      // Apply deltas.
+      deltaDescription   (*seq, task);
+      deltaTags          (*seq, task);
+      deltaAttributes    (*seq, task);
+      deltaSubstitutions (*seq, task);
+
+      seq->setStatus (T::completed);
+      if (!tdb.completeT (*seq))
         throw std::string ("Could not mark task as completed.");
 
-    // Now update mask in parent.
       if (conf.get ("echo.command", true))
         out << "Completed "
-          << t->getId ()
+            << seq->getId ()
             << " '"
-          << t->getDescription ()
+            << seq->getDescription ()
             << "'"
             << std::endl;
 
-    updateRecurrenceMask (tdb, all, *t);
-    nag (tdb, task, conf);
+      updateRecurrenceMask (tdb, all, *seq);
+      nag (tdb, *seq, conf);
+
+      ++count;
     }
+    else
+      out << "Task "
+          << seq->getId ()
+          << " '"
+          << seq->getDescription ()
+          << "' is not pending"
+          << std::endl;
+  }
+
+  if (conf.get ("echo.command", true))
+    out << "Marked "
+        << count
+        << " task"
+        << (count == 1 ? "" : "s")
+        << " as done"
+        << std::endl;
 
   return out.str ();
 }

src/task.cpp

@@ -220,6 +220,10 @@ static std::string shortUsage (Config& conf)
       << "full tutorial.  New releases containing fixes and enhancements are "
       << "made frequently."
       << std::endl
+      << std::endl
+      << "Join in the discussion of task, present and future, at "
+      << "http://groups.google.com/group/taskprogram"
+      << std::endl
       << std::endl;
 
   return out.str ();