Re: whatis(1)

[Ingo Schwarze <schwarze@usta.de>]

Hi,

Kristaps Dzonsons wrote on Sun, Nov 27, 2011 at 01:16:40PM +0100:

> Enclosed is a simple implementation of whatis(1).  It's a mode of
> apropos(1) where arguments are re-written as
> 
>   foo  =>  Nm~^foo$
> 
> This follows OpenBSD's method;

Not really.  A cursory look gives me the impression that OpenBSD
whatis(1) matches whole words in Nm, case-insentively.  However,
i didn't really study the details yet.  For example:

  $ whatis man
  Pod::Man (3p) - Convert POD data to formatted *roff input
  man (1) - display manual pages
  man (7) - legacy formatting language for manual pages
  man.conf (5) - configuration file for man (1)

> other systems, like my Mac, search
> for both `Nm' and `Nd', but I'm avoiding this for now because I
> can't figure out the proper regex for word boundaries

  Nm~[[:<:]]man[[:>:]]

> in multi-word `Nd' strings.

  Nd~[[:<:]]man[[:>:]]  # matches Nd only
  ~[[:<:]]man[[:>:]]  # matches both Nm and Nd

> Thoughts?

Something like this will be needed, yes.

Thanks,
  Ingo
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