MANPATH not handled correctly

[Baptiste Daroussin]

On Sun, Jan 08, 2017 at 11:26:33AM -0800, Steve Kargl wrote:
> MANPATH is not handled correctly.  According to the documentation
> in apropos(1) and whatis(1):
> 
>   MANPATH   The standard search path used by man(1) may be changed by
>             specifying a path in the MANPATH environment variable.  Invalid
>             paths, or paths without manual databases, are ignored.
>             Overridden by -M.  If MANPATH begins with a colon, it is
>             appended to the default list; if it ends with a colon, it is
>             prepended to the default list; or if it contains two adjacent
>             colons, the standard search path is inserted between the
>             colons.  If none of these conditions are met, it overrides the
>             standard search path.
> 
> I have a manpage named mkpic in $HOME/man/man1.  I also have the FreeBSD
> installed manpages, e.g., /usr/share/man/man1/cat.1.gz.  If I have
> 'setenv MANPATH :$HOME/man' in my .cshrc file, then the following occurs:  
> 
> % setenv | grep MANPATH
> MANPATH=:/home/kargl/man
> % apropos mkpic
> (Warning: MANPATH environment variable set)
> mkpic(1) - construct a contour image in MIFF image format
> % apropos cat
> (Warning: MANPATH environment variable set)
> matrix(3) - Array and matrix allocation for FFT library
> 
> So, the above description of MANPATH is incorrect as :/home/kargl/man
> should have been appended to the default MANPATH.
> 
> Interestingly, manpath(1) seems to described what actually happens
> (long lines wrapped):
> 
> % unsetenv MANPATH
> % manpath
> /home/kargl/man:/usr/local/man:/usr/share/man:/usr/share/openssl/man:\
>    /usr/local/lib/perl5/site_perl/man:/usr/local/lib/perl5/5.20/perl/man:\
>    /usr/local/share/xpdf/man
> % setenv MANPATH :$HOME/sman
> % manpath
> (Warning: MANPATH environment variable set)
> :/home/kargl/man
> 
> The expected result according apropos(1) and whatis(1) for last command is
> 
> % manpath
> /home/kargl/man:/usr/local/man:/usr/share/man:/usr/share/openssl/man:\
>    /usr/local/lib/perl5/site_perl/man:/usr/local/lib/perl5/5.20/perl/man:\
>    /usr/local/share/xpdf/man:/home/kargl/man

Sorry it took time, but it is now fixed. the issue was we have kept our man(1)
when importing mandoc and I have not noticed that mandoc had that feature.

I implemented it in our man(1)

While here I removed the painful warning

Best regards,
Bapt
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