hey @biophil, just noticed this on github and posted about it in the new EOS slack. thought you may also very much appreciate hearing about it! :D

wow that's great I was just looking more into how a buy limit and even cancels could be implemented and it seems you guys are already in the process of adding it in a recent pull request! from what I've been reading, I was also coming to the conclusion that "mapping" and "memory" were the best "tricks" to help get there... buyWithLimit pullreq .. https://github.com/EOSIO/eos-token-sale/commit/e9280da6a34bf571e0122c4c7ad47c5c599490e6

Actually, just wrote a post about it too: "EOS Token Sale Smart Contract May Offer BUY LIMITS after all!"