I'm trying to add a custom build system to Sublime. I've created a sublime-build file, and it's appeared in the Build System menu, and F7 runs it and shows the output in the output panel. However, I was expecting to be able to get Sublime to parse the output and let me click on errors to jump to the appropriate line - there are regexps in the supplied sublime-build files that I assume are for this purpose. I can't get it to work though - even the supplied ones like Python don't seem to let me jump to errors. Have I missed something obvious?