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resolve_root

shell_mcp::root

Function resolve_root 

Source 
pub fn resolve_root(
    cli: Option<&Path>,
    env: Option<&str>,
    fallback_cwd: &Path,
) -> Result<ResolvedRoot, RootError>
Expand description

Pure resolution function so unit tests can drive every case without touching the process environment.

cli is the value of --root; env is the value of SHELL_MCP_ROOT (an empty string is treated as unset to match shell ergonomics); fallback_cwd is what the process believes its cwd to be.

The launch-cwd fallback is intentionally permissive — it accepts whatever the OS reports — because direct shell invocations (cd ~/proj && shell-mcp) should still work without ceremony. The strict absolute-path requirement only applies when the user explicitly supplied a flag or env value.