<hr /><i>anonymous claiming to be mgagnon added on 2011-03-11 22:25:16 UTC:</i><br />
Did your test was similar to this?

<pre>
$ pwd
/home/mgagnon/fossil/fossil-scm/src/asd/fsad/fas/dfa/sdf/asdf/as/dfas/dfa/sdf/asdf/asd/fa/sdfa/sdf/asd/fas/df/asdf/asd/fas/df/asdf/d
$ fossil di ~/fossil/fossil-scm/src/file.c
--- /home/mgagnon/fossil/fossil-scm/src/file.c
+++ /home/mgagnon/fossil/fossil-scm/src/file.c
@@ -537,11 +537,11 @@
   }
 
   if( nFull<=n || memcmp(g.zLocalRoot, zFull, n) ){
     blob_reset(&full);
     if( errFatal ){
-      fossil_fatal("file outside of checkout tree: %s", zOrigName);
+      fossil_fatal("file outside of checkout tree: \"%s\", zLocalRoot: \"%s\", zFull: \"%s\"", zOrigName, g.zLocalRoot, zFull);
     }
     return 0;
   }
   blob_append(pOut, &zFull[n], nFull-n);
   return 1;
</pre>

It seems to work for me..