'Unexpected regex results with polytonic Greek capitals
I am trying to select only capital letters in polytonic Greek text using regex. The specific application is PHP, but I had trouble with it so I started playing around with it in RegExr:
([Α-ΩΗΙΟΥΩᾼῌῼΡΆΈΉΊΌΎΏᾺῈῊῚῸῪῺἈἘἨἸὈὨᾈᾘᾨἌἜἬἼὌὬᾌᾜᾬἊἚἪἺὊὪᾊᾚᾪἎἮἾὮᾎᾞᾮἉἙἩἹὉὙὩᾉᾙᾩῬἍἝἭἽὍὝὭᾍᾝᾭἋἛἫἻὋὛὫᾋᾛᾫἏἯἿὟὯᾏᾟᾯΪΫᾹῙῩᾸῘῨ])
When the JavaScript engine is selected, the behaviour is as expected. However, if I select PCRE not only are capital letters selected, but also a bunch of seemingly random lowercase letters.
Can anyone shed some light on what is going on here? Is this a bug? Is there a way to get the desired result using the PCRE engine?
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