Make block undo and single undo work again.

Loggable.C

@@ -242,15 +242,26 @@ Loggable::undo ( void )
 
     int ui = _undo_index;
 
+    block_start();
+
+    if ( strcmp( b, "{" ) )
+    {
+        /* It's a single undo, get rid of trailing messages in this block */
+
+        n = 1;
+
+        s = b + 2;
+        s += strlen( s ) - 1;
+    }
+
     while ( n-- )
     {
         while ( s >= b && *(--s) );
 
         s++;
 
-        if ( ( ! strcmp( s, "{" ) )
-             || ( ! strcmp( s, "}" ) ) )
-            continue;
+        if ( ! strcmp( s, "{" ) )
+             break;
 
         if ( *s == '\t' )
             s++;
@@ -313,6 +324,8 @@ Loggable::undo ( void )
         s -= 2;
     }
 
+    block_end();
+
 // FIXME: bogus... needs to account for multiple events.
     _undo_index = ui + 1;
 

Loggable.H

@@ -84,17 +84,17 @@ public:
     void
     block_start ( void )
         {
-//            indent();
-//            log( "{\n" );
             ++Loggable::_level;
         }
+
     static
     void
     block_end ( void )
         {
             assert( --Loggable::_level >= 0 );
-//            indent();
-//            log( "}\n" );
+
+            if ( Loggable::_level == 0 )
+                flush();
         }
 
     static