# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2021-07-31 21:18:26 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/1421581040632598530) Idea for an IDE feature. When a build fails to compile, step back through undo history and try to compile each step. It could then make it clear you accidentally pasted a single character at the end of your file. https://t.co/wsoCC0nBI7