Hi, The normal behavior 'abc' howManyMatch: 'abd' --> 2. I got suprized the way Blanks and new lines are handled. '\**' withCRs howManyMatch: '\\**' withCRs. --> 2 instead of 1 'ab\ **' withCRs howManyMatch: 'ab\\**' withCRs. --> 4 instead of 3 '\ **' withCRs howManyMatch: '\\**' withCRs. --> 3 instead of 1 'ab\ **' withCRs howManyMatch: 'ab\\**' withCRs. --> 5 instead of 3 The behavior is the same in both Pharo 3 and Pharo 4. Reading the code of does not help me understand why it's this way String>>howManyMatch: string "Count the number of characters that match up in self and aString." | count shorterLength | count := 0. shorterLength := self size min: string size. 1 to: shorterLength do: [:index | (self at: index) = (string at: index ) ifTrue: [ count := count + 1 ]]. ^ count Noury Afin de contribuer au respect de l'environnement, merci de n'imprimer ce courriel qu'en cas de necessite Please consider the environment before you print