PR other/31349
* opts.c (undocumented_msg): Leave blank unless checking is
enabled.
(handle_options): Fix indentation.
(print_filtered_help): If no language-specific options were
displayed tell the user how to list all the options supported by
the language's front-end.
(print_specific_help): Fix indentation and remove duplicate line.
(common_handle_option): Handle the -v option.
For --help enable the display of undocumented options if the -v
switch has been included on the command line.
For --help= check for overlaps in the arguments between the option
classes and the language names and issue a warning when they
cannot be disambiguated.
* c.opt (v): Pass on to the common option handler.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@132427
138bc75d-0d04-0410-961f-
82ee72b054a4