[MacPorts] #16900: guide: return values for tcl extensions such as existsuser and adduser

[MacPorts]

#16900: guide: return values for tcl extensions such as existsuser and adduser
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 Reporter:  dweber at macports.org  |       Owner:  markd at macports.org     
     Type:  defect               |      Status:  new                    
 Priority:  Normal               |   Milestone:  Website & Documentation
Component:  guide                |     Version:  1.6.0                  
 Keywords:                       |        Port:                         
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 Can we update the guide to indicate the return values for many of the tcl
 extensions listed here:
 http://guide.macports.org/#reference.tcl-extensions

 For example, there is no indication that {{{existsuser}}} returns the UID
 for a user that exists - what does it return when no user exists - 0?
 Also, it would be helpful to know whether {{{adduser}}} skips, replaces,
 or updates specific fields for any user that already exists.  Does
 {{{adduser}}} provide any return values to indicate success or failure (or
 otherwise - like UID)?

 Thanks, Darren

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Ticket URL: <http://trac.macports.org/ticket/16900>
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