-t
: Truncate identifiers
The truncation option enables one to use a wider character set for
identifiers than the language compiler will accept. The standard
example is vanilla-flavored FORTRAN-77, which doesn't allow the underscore.
If one says `-tn6{_}
', underscores will be removed from all
identifiers, then the result will be truncated to length 6. If the
truncation procedure results in non-unique identifiers, these are
listed.