I had to look it up to, it seems to be correct English:

http://idioms.thefreedictionary.com/all+but

I would love to see that, but today the googles are weak in this one :( Anybody have a link?

He did great work in the MIT artificial intelligence lab, the for over a year single-handedly cloned every piece of software written by the all the programmers at the Symbolics AI company.

I believe RMS prefers to type double-handedly.

/bash.org

It helps investors to quickly buy and sell securities for a fair price. Of course most members of society don't invest themselves but somebody else does for them. For example: your pension fund invests your money in securities for you. Another example: Corporations that sell commodities and want to hedge their income stream. If they can secure a good price for their products they can focus on what they do best: produce.

Could you elaborate? Word doesn't think 'liquidity' was spelled wrong.

Day traders create and provide liquidity.