Fix SSH_PUBKEYINFO, limit characters, add tests We fix a bad_bufptr() failure from a previous commit. We now limit the allowed characters to those that will definitely be safe in a shell. Some scripts/programs may use arbitrary environment variables without escaping correctly - that could be a problem in a restricted environment. The current allowed set is a-z A-Z 0-9 .,_-+@ This also adds a test for SSH_PUBKEYINFO, by default it only runs under github actions (or "act -j build").

attrs==21.2.0
iniconfig==1.1.1
packaging==21.0
pluggy==1.0.0
py==1.10.0
pyparsing==2.4.7
pytest==6.2.5
toml==0.10.2
psutil==5.9.0