Purpose: To get [TclX] file functionality into the core.

The '''-keepalive''' option should be added to [fconfigure] for sockets.  Possibly other sockopts should be added to fconfigure too.

A new command [pipe] should be added to provide TclX pipe functionality.

'''Changes to tcl's file command'''

A new '''file type''' result, '''tty''', will be added.  Alternatively, a new subcommand '''file isatty''' can be defined on open file descriptors.

A new file option '''-fileid''' to allow an open file to be processed in place of the file name argument.  (This may not be possible under windows.)

    * '''file truncate''' for tclx's [ftruncate]
    * '''file lock''' for tclx's [flock]
    * '''file unlock''' for tclx's [funlock]
    * '''file dup''' for tclx's [dup]

The most frequent request is to move the [TclX] signal handling commands into Tcl. 

Another suggestion that's been made in the past is to create an extension that provides Tcl bindings for the most useful Posix functions.

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[Category Suggestion]