On Tue, Feb 15, 2005 at 03:06:19PM +0100, Francesco P. Lovergine wrote: > On Tue, Feb 15, 2005 at 07:38:08AM -0600, John Hasler wrote: > > Francesco P. Lovergine writes: > > > It depends on programs, sometimes the same usage function is used for > > > either --help or invalid options. > > > > Sure, but the output should still be directed correctly. > > Quite difficult if the function is the same. In both cases it uses stderr.
So you change the program to take a file descriptor into the help-printing function, or provide some other means of determining where to send the output. - Matt
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