[Pharo-dev] Bug in Regex?

Hi guys, Look at this case: `'25' matchesRegex: '([0-9]|[1-9][0-9])' -> false` `'25' matchesRegex: '([1-9][0-9]|[0-9])' -> true` That is, ( a | b ) is not euqal to ( b | a ) " a or b is not equal to b or a" and should describe a range of 0 to 99. I don't understand why the first sentence answers false. Even Pharo 1.1 answers false (so this is very very old behavior). I checked on other dialects and it answers true. I then checked here [1] and it also find matches. So...do you see some rational explanation or sounds like a bug? [1] https://regex101.com/r/MqVXz8/1 -- Mariano https://twitter.com/MartinezPeck http://marianopeck.wordpress.com