prolog-paren-indent-p

prolog-paren-indent-p is a variable defined in `prolog.el'.
Its value is

nil

Documentation:
If non-nil, increase indentation for parenthesis expressions.
The second and subsequent line in a parenthesis expression other than
a compound term can either be indented `prolog-paren-indent' to the
right (if this variable is non-nil) or in the same way as for compound
terms (if this variable is nil, default).

You can customize this variable.

This variable was introduced, or its default value was changed, in version 24.1 of Emacs.