[CMake] ctest and mixing -L and -LE

[Daniel Russel]

Is one supposed to be able to mix "-L" "-LE" arguments to ctest? I'd like to (eg run all tests for a module that aren't marked as expensive), but I'm confused by what I get. 

For example, if I do "ctest -L IMP.em2d" I get:
Label Time Summary:
IMP.em2d        = 367.96 sec
example         = 141.11 sec
length_short    = 226.85 sec
test            = 226.85 sec

But then if I do  "ctest -L IMP.em2d -LE example", then it doesn't find any tests. 

Thanks.