vhdl-modify-date-on-saving

vhdl-modify-date-on-saving is a variable defined in `vhdl-mode.el'.
Its value is

t

Documentation:
Non-nil means update the modification date when the buffer is saved.
Calls function `M-x vhdl-template-modify').

NOTE: Activate the new setting in a VHDL buffer by using the menu entry
"Activate Options".

You can customize this variable.