tree 21dc759258d0be035a902c79226a05e1cb389840
parent a65c2d9ba51b4bddb87dfd08581ced199a79deb2
author guangchuang yu <guangchuangyu@gamil.com> 1493440444 +0800
committer guangchuang yu <guangchuangyu@gamil.com> 1493440444 +0800

do nothing if not latex or html output