Lindsay Lohan Jail? -- Lindsay Will Dodge Jail Bullet

There was a buzz in the case that Judge Elden Fox would have Lindsay jailed tomorrow -- without giving her bail -- and make her sit behind bars for 30 days until the next hearing. The danger for Lindsay -- she would have to serve the full 30 days and would not be released early because of jail overcrowding.

But insiders tell TMZ ... if Judge Fox remands Lindsay into custody he must set bail, because the underlying offenses are all misdemeanors.

So here's the way it will go down ... Our sources say tomorrow's hearing will be extremely short. There won't be any arguments over the case. Judge Fox will schedule the formal probation violation hearing, and almost certainly remand Lindsay into custody and then set bail. But you can bet a bail bondsman will be right there in the courtroom to take care of business on the spot. So Lindsay will walk out a free woman tomorrow.

When the probation violation hearing is held next month, it's likely Judge Fox will sentence Lindsay to 30 days in jail based on the failed drug test for cocaine. As we first reported, the Probation Department will not recommend jail time for the second failed drug test because of an ambiguity in the paperwork.

But this 30-day sentence would be subject to the realities of jail overcrowding, which means Lindsay would go to jail for booking and probably be released an hour or two later.