message: Increased error handling in DataCollection option
diff: @@ -1199,7 +1199,7 @@ int main (int argc, char *argv[])
  "--> " << flush;
  char dk;
  cin >> dk;
  - if (dk == 'p')
  + if (dk == 'p' || dk == 'P')
  {
  const char omesh_file[] = "mesh-explorer-paraview";
  ParaViewDataCollection dc(omesh_file, mesh);
  @@ -1207,7 +1207,7 @@ int main (int argc, char *argv[])
  dc.Save();
  cout << "New ParaView mesh file: " << omesh_file << endl;
  }
  - else if (dk == 'v')
  + else if (dk == 'v' || dk == 'V')
  {
  const char omesh_file[] = "mesh-explorer-visit";
  VisItDataCollection dc(omesh_file, mesh);
  @@ -1216,6 +1216,11 @@ int main (int argc, char *argv[])
  cout << "New VisIt mesh file: " << omesh_file << "_000000.mfem_root"
  << endl;
  }
  + else
  + {
  + cout << "Unrecognized DataCollection type: \"" << dk << "\""
  + << endl;
  + }
  }
  #ifdef MFEM_USE_ZLIB
  