[MacPorts] #48141: "port select" should link manpages

[MacPorts]

#48141: "port select" should link manpages
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 Reporter:  cwbrune@…               |      Owner:  macports-tickets@…
     Type:  request                 |     Status:  new
 Priority:  Normal                  |  Milestone:  MacPorts Future
Component:  base                    |    Version:  2.3.3
 Keywords:  select version manpage  |       Port:
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 `port select` makes it easy for a user to manage multiple versions of a
 port. However, there is no symbolic link in `/opt/local/share/man`
 corresponding to that in `/opt/local/bin`. For example, after typing `port
 select gcc mp-gcc49`, the command `gcc` runs the selected version.
 However, `man gcc` says "No manual entry for gcc."

 Selecting a version using `port select` should also make appropriate
 symbolic links so the manpage for the selected version is displayed when
 `man <group>` is given.

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Ticket URL: <https://trac.macports.org/ticket/48141>
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