[Bug 192837] [patch] su(1) does not need to fork; it causes terminal problems

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=192837

Jilles Tjoelker <jilles at FreeBSD.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jilles at FreeBSD.org

--- Comment #2 from Jilles Tjoelker <jilles at FreeBSD.org> ---
The fork is required so that PAM may be shut down correctly.

The setpgid code is there for csh. See SVN r153985 and previous for details.
Apparently csh does not make itself a process group leader when it is
interactive and job control is enabled. Fixing this is harder than it seems.

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