Method get_string_none

src/tts.rs:480–508

auto pausing can't be known until neighboring strings are computed we create a unique string in this case and compute the real value later

(&self, command: &TTSCommandRule,  prefs: &PreferenceManager, is_start_tag: bool)

    // auto pausing can't be known until neighboring strings are computed
    // we create a unique string in this case and compute the real value later 
    fn get_string_none(&self, command: &TTSCommandRule,  prefs: &PreferenceManager, is_start_tag: bool) -> String  {
        // they only thing to do is handle "pause" with some punctuation hacks along with 'spell'        
        if is_start_tag {
            if command.command == TTSCommand::Pause {
                let amount = command.value.get_num();
                // only ',' and ';' are used as '.' didn't seem to reliably generate pauses in tests
                return crate::speech::CONCAT_INDICATOR.to_string() + (
                    if amount == PAUSE_AUTO {
                        PAUSE_AUTO_STR
                    } else {
                        let amount  =  amount * TTS::get_pause_multiplier(prefs);
                        if amount <= MIN_PAUSE {
                            ""
                        } else if amount <= 250.0 {
                            ","
                        } else  {
                            ";"
                        }
                    }
                );
            } else if command.command == TTSCommand::Spell {
                // debug!("spell rule: {}", command.value.get_string());
                return command.value.get_string().to_string();
            } else if let TTSCommandValue::Pronounce(p) = &command.value {
                return crate::speech::CONCAT_INDICATOR.to_string() + &p.text;
            }
        };
        return "".to_string();
    }
    
    fn get_string_sapi5(&self, command: &TTSCommandRule, prefs: &PreferenceManager, is_start_tag: bool) -> String  {
        return match &command.command {