misc/46185: man pages fail in single user mode

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>Number:         46185
>Category:       misc
>Synopsis:       man pages fail in single user mode
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    misc-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Mar 13 15:55:00 +0000 2012
>Originator:     David Brownlee
>Release:        NetBSD 6 BETA
>Organization:
>Environment:
NetBSD forsaken 6.0_BETA NetBSD 6.0_BETA (GENERIC) amd64

from NetBSD-daily (2012-03-09)
>Description:
NetBSD no longer ships with pregenerated catman pages - man generates them on 
demand.

When it does this it writes them to /tmp, then displays to the user.

Unfortunately in single user /tmp is non writable, so this fails.
>How-To-Repeat:
- boot single user
- run 'man fsck'
>Fix:
Workarounds:
- mount / R/W. Sometimes issues the manpage is needed specifically to address 
an issue with just this operation.
- mount tmpfs on /tmp
- mandoc /usr/share/man/... | less

A possible fix might be for man to default to piping its output direct to the 
display/$PAGER

This may prove annoying for people who currently expect there to be an actually 
temporary file which can be edited, but is less of an issue than no manpage 
access in single user mode.