Regex question

[GitHub issues - opened <github@alsa-project.org>]

alsa-project/alsa-ucm-conf issue #567 was opened from shumingfan:

We have an Intel platform machine that equips the rt722 multi-codecs and rt1320 amplifier.
This machine driver will use the amp of rt722 and rt1320 both.
Therefore, the component string is shown below.

`Components    : 'HDA:8086281d,80860101,00100000  cfg-amp:2 hs:rt722 spk:rt722 spk:rt1320'`

I tried to modify the regular expression to capture substrings to SpeakerCodec1 and SpeakerCodec2 variables.
However, I can't get SpeakerCodec2="rt1320", even though I changed the regular expression to 
```
SpeakerCodec {
	Regex " spk:(rt722)| spk:(rt1320)"
	String "${CardComponents}"
}
```
The variable SpeakerCodec2 is still an empty string.
What do I miss?

Issue URL     : https://github.com/alsa-project/alsa-ucm-conf/issues/567
Repository URL: https://github.com/alsa-project/alsa-ucm-conf