Created attachment 6218 
bad highlight

Mousepad 0.4.0 (OpenSUSE 13.1)
Color scheme "Tango"
language: Script > sh

Wrong syntax highlight near line 56 and further in this fragment:

    50  ;;
    51  -r )
    52          conv
    53          echo -n > ~/.thunar_h   # HARDCODED!
    54          while read line
    55          do
    56                  echo "$(basename "$line")" >> ~/.thunar_h
    57          done < HIST1
    58          gtkdialog --program=MAIN_DIALOG
    59  ;;
    60  * )
    61          help
    62          exit 0
    63  ;;