[CMake] cmake_parse_arguments and empty strings

[Luc J. Bourhis]

Consider the following snippet

cmake_minimum_required(VERSION 2.8)

include (CMakeParseArguments)

function(foo)
    set(options)
    set(one_valued)
    set(multi_valued)
    cmake_parse_arguments("_" "${options}" "${one_valued}" "${multi_valued}"
${ARGN})
    message(">>${__UNPARSED_ARGUMENTS}<<")
endfunction()

foo(ARG "")

This will print
>>ARG<<

Thus, if I was to pass ${__UNPARSED_ARGUMENTS} to another function "bar"
expecting "ARG value", that function "bar" would not work correctly because
it would not be called as bar(... ARG "" ...). 

I would naively consider that a bug.




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--
Luc J. Bourhis

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