Report incompatible types

[cdeng]

in a “when” clause put a boolean expression as “regex(…).matches && not regex(…).matches”, system will report incompatible types between (regex(…).matches) and (not regex(…).matches):

is it a bug?

[jochen]

&& not is not a valid comparison operator.

Try to be explicit about the comparisons, for example:

regex(...).matches == true && regex(...).matches == false

[cdeng]

the way you mentioned works. but with more tests, i found it seems although regex(…).matches being boolean value, but it cannot as boolean value directly appears in the logic expression more than 2 times, for example, system will report error with:

regex(...).matches && regex(...).matches && regex(...).matches

but without error with both

   true && not false

and

 true && not false && not not true

this confused me a lot.

[system]

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