The basename extension such that nameroot + nameext == basename, and
nameext is empty or begins with a period and contains at most one
period. Leading periods on the basename are ignored; a basename of
.cshrc will have an empty nameext.
The implementation must set this field automatically based on the value
of basename prior to evaluating parameter references or expressions.
The basename extension such that nameroot + nameext == basename, and nameext is empty or begins with a period and contains at most one period. Leading periods on the basename are ignored; a basename of .cshrc will have an empty nameext. The implementation must set this field automatically based on the value of basename prior to evaluating parameter references or expressions.