Regex: positive lookahead

Match a q that is immediately followed by a u, without making the u part of the match.

q(?=u)

Match a q that is followed by a u (doesn’t have to be immediately after), without making the u part of the match.

q.*(?=u)

Sources / related

• regular-expressions.info
• Regex: positive look behind
• Regex: negative look ahead
• Regex: negative look behind