Retrace.jar -regex doesn't deobfuscate text

I’m trying to deobfuscate a class reference in a logging message. I found this other answer:

but it doesn’t seem to work.
What I do is I write this text into a file /tmp/obfuscated.txt:

Cannot cast o.aCb to o.bpX

Then I ran the jar with

java -jar retrace.jar -regex ‘.%c.%m.’ mapping.txt /tmp/obfuscated.txt

and it only returns the text that’s in the file w/o deobfuscating…

TIL: asked support and there’s a “-greedy” parameter that works w/o needing a regex.