Is there any documentation about the expression syntax and evaluation of
conditions in Burn?
I found, that comparison of empty strings "" does not behave as expected. Is
this the intended behaviour?
Using WiX 3.8.1128 the EvaluateCondition method returns the following values
for "" op "" (where op is the operator):
Real Expected
< False False
> True False
<= False True
>= True True
= False True
<> True False
~< False False
~> True False
~<= False True
~>= True True
~= False True
~<> True False
I dug a bit into the code and suspect that CompareStringW does not handle empty
strings but my Google searches provided no information whether it does or not.
I'm not very well versed with unmanaged code so this might as well be wrong.
For now I have a workaround for my use case, but I wanted to know if this was a
bug or not.
Greetings Tobias
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