Function alias_token_at

crates/openshell-core/src/secrets.rs:457–474

(text: &str, abs_start: usize)

}

fn alias_token_at(text: &str, abs_start: usize) -> Option<(usize, &str)> {
    let suffix = &text[abs_start..];
    let marker_rel = suffix.find(PROVIDER_ALIAS_MARKER)?;
    if marker_rel == 0 {
        return None;
    }
    let key_start = abs_start + marker_rel + PROVIDER_ALIAS_MARKER.len();
    let key_end = text[key_start..]
        .bytes()
        .position(|b| !is_env_key_char(b))
        .map_or(text.len(), |p| key_start + p);
    if key_end == key_start {
        return None;
    }
    let before_ok = abs_start == 0 || !is_alias_token_char(text.as_bytes()[abs_start - 1]);
    let after_ok = key_end == text.len() || !is_alias_token_char(text.as_bytes()[key_end]);
    (before_ok && after_ok).then_some((key_end, &text[abs_start..key_end]))
}

fn alias_env_key(token: &str) -> Option<&str> {
    let marker_start = token.find(PROVIDER_ALIAS_MARKER)?;