Re: Regular expressions for hao

"Doug Wegscheid [email protected] [hercules-390]" <[email protected]> Tue, 4 Feb 2020 02:22:33 +0000 (UTC)
Newsgroups gmane.comp.emulators.hercules390.general
Message-ID <[email protected]>
The asterisk and question mark are quantifiers for signifying how many of the preceding character or group match; they matching nothing by themselves.

You probably want something like
..*IEF233. M ([0-9A-F]{3,4}),([0-9A-Z]{1,6}),.*

Try https://regex101.com/ to test your regexp (HAO uses PCRE regexps).
You also may want to head over to the group.io group https://hercules-390.groups.io/g/group; I don't know how much people will be watching yahoo groups.