>>Is the following a bug in STRTRAN()? It happens in VFP 7 & 9.
>>
>>? ISNULL(STRTRAN('XXX', 'YYY', NULL)) && prints .T.
>>
>>'YYY' doesn't appear in 'XXX', so why is it substituting NULL in the first place? If the expression sought doesn't exist in the expression to be searched, I would expect to have the expression to be searched returned as is, regardless of the replacement expression.
>
>it is not a bug.
>
>When a parameter is null and the function is deterministic,
>a parameter that can null the result, makes the result always null.
I can understand the reasoning behind that, even though it doesn't meet my expectations. Perhaps my expectations have just been trained wrong <g>.
Thanks to all for their responses.
>
>for this ? expect NULL or B ?
>
>? STRTRAN(NULL,NULL,"B")
>
>
>next is a bug
>
>
>? DTOC(DATE(),1)
>? DTOC(DATE(),NULL)
>
>
>bug origin ?
>because the code checks if there is one parameter, not the value of the parameter,
>Eventualer any future modification of the parameter will be a problem.
>
>
>? DTOC(DATE(),"")
>
