Method add

crates/kernel_cmdline/src/bytes.rs:217–237

Add a parameter to the command line if it doesn't already exist Returns `Action::Added` if the parameter did not already exist and was added. Returns `Action::Existed` if the exact parameter (same key and value) already exists. No modification was made. Unlike `add_or_modify`, this method will not modify existing parameters. If a parameter with the same key exists but has a different value, the

(&mut self, param: &Parameter)

    /// different value, the new parameter is still added, allowing
    /// duplicate keys (e.g., multiple `console=` parameters).
    pub fn add(&mut self, param: &Parameter) -> Action {
        // Check if the exact parameter already exists
        for p in self.iter() {
            if p == *param {
                // Exact match found, don't add duplicate
                return Action::Existed;
            }
        }

        // The exact parameter was not found, so we append it.
        let self_mut = self.0.to_mut();
        if self_mut
            .last()
            .filter(|v| !v.is_ascii_whitespace())
            .is_some()
        {
            self_mut.push(b' ');
        }
        self_mut.extend_from_slice(param.parameter);
        Action::Added
    }

    /// Add or modify a parameter to the command line
    ///