verilog-typedef-regexp

verilog-typedef-regexp is a variable defined in `verilog-mode.el'.
Its value is

nil

• This variable is safe as a file local variable if its value
  satisfies the predicate `stringp'.

Documentation:
If non-nil, regular expression that matches Verilog-2001 typedef names.
For example, "_t$" matches typedefs named with _t, as in the C language.
See also `verilog-case-fold'.

You can customize this variable.