gistfile1.txt

class Person {
    String firstName
    Integer age
}


Person.withSession {
    new Person(firstName: 'Jeff', age: 44).save()
    new Person(firstName: 'Betsy', age: 43).save()
    new Person(firstName: 'Zack', age: 17).save()
    new Person(firstName: 'Jake', age: 14).save()
}

def firstResults = Person.where {
    firstName =~ 'J%' && age > 20
}.list()

def c = {
    firstName =~ 'J%' && age > 20
}
        
def secondResults = Person.where(c).list()

// both of these assertions pass...
assert firstResults.size() == 1
assert secondResults.size() == 4

This is related to a question at http://stackoverflow.com/questions/26165041/variable-in-a-closure-to-avoid-multiple-ifs/26165265?noredirect=1#comment41022839_26165265

http://stackoverflow.com/users/973339/evanwong has asserted that those queries should return the same results, but they shouldn't.

The incorrect answer at the link above has since been deleted.