Strange character appears after colon in title

[Popolechien]

Every time there is a colon (":") in the title of a book, the next character will be $b
See for instance https://browse.library.kiwix.org/viewer#gutenberg_en_lcc-a_2025-12/Home

[VikramAditya33]

I was also wondering about the same thing maybe the title "Peter Pan : $b [Peter and Wendy]" includes MARC (Machine-Readable Cataloging) notation that isn't being cleaned and some Project Gutenberg RDF entries use MARC format.

Maybe the current parsing logic in rdf.py doesn't handle the MARC :$b delimiters

@benoit74 might guide us with this one

[benoit74]

@VikramAditya33 seems to be right, this looks like MARC notation. And the logic in rdf.py indeed doesn't consider any MARC notation when parsing.

@eshellman can you confirm this is it intended to have kept this MARC notation in the RDF and we should adapt the scraper to it? Is there any other field where we should take care of that?