LogFAQs > #964651763

Conner4REAL posted...

If I recall, in the dark knight returns he seems to beyond Have suspected it the whole time but mostly the comics are silent on it.

A lot of modern versions of the story imply pretty hard that Gordon's known almost from the very beginning (and has generally known that Barbara is Batgirl as well), but he pretends like he doesn't because it gives him plausible deniability if he's ever ordered to arrest Batman. This is especially true in the stories where they have Gordon be the young beat cop who tries to comfort Bruce a bit when they respond to his parents being shot.

It mostly depends on the writer in comics, because every new writer tends to interpret things differently. But a lot of them go with the above idea these days.