Add possiblity to support specifying desired section of manpage

[Harald van Dijk]

On 22/12/2020 15:42, Xabier Oneca -- xOneca wrote:
> Hi Depsterr,
> 
>> Usage: man [-aw] MANPAGE[.SECTION]...
> 
> That does not seem to be compatible with the standard man:
> 
>    man [OPTION...] [SECTION] PAGE...

It is not so much incompatible as it is incomplete. The widely used 
man-db implementation of man does support this form as well. It supports 
three forms of specifying the section, which all do the same thing:

   man 7 man
   man man.7
   man 'man(7)'

Cheers,
Harald van Dijk