pub fn get(key: &str) -> Option<String>Expand description
A plain getenv, no default and no ENV_PARAM behind it.
Only for variables that are NOT in C’s table (EPICS_CA_USE_SHELL_VARS, the
pvxs EPICS_PVA* set, the port’s own EPICS_RS_*); C reads those with
getenv too and its caller owns the fallback. Every EPICS Base ENV_PARAM
must go through super::env_table.