'''catopen''' is a [Tclx] command for opening a [message catalog].

    :   '''catopen''' ?'''-fail'''|'''-nofail'''? ''catname''
Open the message catalog ''catname''.  This may be a relative path name, in which case the `NLSPATH` environment variable is searched to find an absolute path to the message catalog.  A handle in the form `msgcat''N''` is returned.  Normally, errors are ignored, and in the case of a failed call to '''catopen''', a handle is returned to an unopened message catalog.  (This handle may still be passed to [catgets] and [catclose], causing [catgets] to simply return the default string.  If the '''-fail''' option is specified, an error is returned if the open fails.  The option '''-nofail''' specifies the default behavior of not returning an error when '''catopen''' fails to open a specified message catalog.  If the handle from a failed '''catopen''' is passed to [catgets], the default string is returned.

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See also [catgets] and [catclose].

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%| [Category Command] | [Category TclX] |%
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