Ruby Regex matching unexpected characters -


i trying write script parses filename of comicbook , tries extract info such seriesname, publication year etc.in case, trying extract publication year name. consider following name, need match , value 2003. below expression had this.

r = %r{ (?i)(^|[,\s-_])v(\d{4})($|[,\s-_]) }

however matches number irrespective of character have before v or after number

i expect first 2 not match , third match.

  • 010 - star batman & robin boy wonder 01 - av2003
  • 010 - star batman & robin boy wonder 01 - v2003t
  • 010 - star batman & robin boy wonder 01 - v2003

what doing wrong in case?

inside character classes (ie. []s) - character has special meaning when it's between 2 other characters: creates range starting character before , ending @ character after.

here, want literally, should either escape - or (more idiomatically in regex) put first or last character in [].

also, btw, have literal space characters, no /x modifier, don't want capture what's before , after year, final pattern be:

%r{(?i)(?:^|[,\s_-])v(\d{4})(?:$|[,\s_-])}

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