$title 'Tests $if exist and $if dexist' (IFSTAT3,SEQ=231)

$onText
The "$if exist foo" test in GAMS checks for files only - it should
return false for a directory named foo.
A new test "$if dexist foo" has been added to check for a
directory named foo
$offText

$onDollar
$call rm -fr notthere
$if dexist nothere $error directory is not there
$if  exist nothere $error      file is not there
$call mkdir notthere
$if NOT dexist notthere $error directory exist
$if      exist notthere $error notthere is a directory not a file
$set d \
$if %system.filesys% == UNIX $set d /
$echo something > notthere%d%temp.txt
$if NOT  exist notthere%d%temp.txt $error file is there
$if     dexist notthere%d%temp.txt $error temp.txt is a file not a directory
$call rm -fr notthere
$if  exist notthere%d%temp.txt $error      file does not exist
$if dexist notthere%d%temp.txt $error directory does not exist