Sublime complained "Error trying to parse build system: No data in ~/.config/sublime-text-2/Packages/User/shadow.sublime-build:1:1.

This left me puzzled while I tried to figure out how this build thing is supposed to work. The file is not really empty. It just doesn’t exist. The error message is wrong.

ptrace output:
$ strace -p 26038 2>&1|grep -i open
open("/home/josh.chia/.config/sublime-text-2/Packages/User/shadow.sublime-build", O_RDONLY) = -1 ENOENT (No such file or directory)