What are the rules for soccer/football goalies committing penalties inside the box?

Question

During the recent Women's World Cup Quarter-Final, the French goalie performed a slide tackle inside the box against an attacker. She completely missed the ball and tripped the attacker. Why wasn't this a penalty? I'll try to attach a clip if I can find one.

I found a pay-walled (but readable) two-part article discussing goalie behavior that indicates this is a well-known problem in all of soccer.

Answer 1

If the referee thought that the slide tackle was a foul it would have still been a penalty. However, referee's are often much more lenient towards goalie's fouling attackers. Goalie's have gotten red cards before if the commit a foul and have the same rules applied to them as field players. Perhaps the forward "flopped" or pretended to get hit causing the referee to not give a penalty.