[pg-cvs] Adding WITH-TEMPORARY-DIRECTORY

[Mark Cox]

Hi,

Attached is a patch for a WITH-TEMPORARY-DIRECTORY macro.

(defmacro with-temporary-directory ((directory &key (pathspec *temporary-directory*)) 
                                    &body body)
  "Within the lexical scope of the body, DIRECTORY is bound to a newly
created temporary directory. When BODY exits, the created
directory (and all its containing files) are deleted before the value
of the last form in BODY is returned.

The value of PATHSPEC determines the location and prefix of the
temporary directory. The PATHNAME-DIRECTORY component of PATHSPEC
determines the location in which the temporary directory is to be
created. A non null PATHNAME-NAME of PATHSPEC will be used as a
prefix of the temporary directory.
"
...)

Thanks
Mark

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