As documented, using multiple --help=<value> options in one command line
produces an output that concatenates the output from the various --help=<value>
options.
However, using both --help and --help=<value> gives only the --help output,
regardless of the order in which they are specified.
--
Summary: --help and --help=<value> options cannot be combined.
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: other
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: brooks at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31357