Teliva's model doesn't include any way to change directory. We just have
relative paths and absolute paths. Relative paths should not be able to
reach into parent directories.
The current test is a bit hacky; it also disallows directories ending in
a period. Hopefully not an issue.
There's a separate open question here of where Teliva should store files
like teliva_editor_state and teliva_editor_buffer. One school of thought
is that apps should never be dropping crud into people's directories. On
the other hand, I'm kinda encouraging people so far to just run apps
from Teliva's directory. Perhaps that makes it ok?
Kartik K. Agaram