'''file writable''' ''name''

Returns '''1''' if file ''name'' is writable by the current user, '''0''' otherwise.

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[RS] just noticed that from Windows 2000 over network boundaries, it may report '''1''' even for directories where I positively may not write. A hacky workaround seems to be:

 set dummyname $name.[clock seconds] ;# not to clobber an existing one
 if { [catch {file open $dummyname w]} fp] } {
   # not writable
 } else {
   close $fp
   file delete $dummyname
 }

[Vince] adds --- 'NativeAccess' in tclWinFile.c needs updating to deal with Windows user/permission-related information (whatever that is -- anyone have any pointers?).

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See also:

   * [file]
   * [file readable]
   * [file owned]

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