[luatex] callbacks in luatex 0.89

David Carlisle d.p.carlisle at gmail.com
Wed Feb 10 23:43:20 CET 2016

Comparing the list of callbacks in luatex 0.89 to those in 0.80 the
changes seem to be

- append_to_vlist_filter
- hpack_quality
- process_rule
- show_warning_message

- pdf_stream_filter_callback
- token_filter

the first three new ones are documented in the manual but not
the two that have gone are not documented anywhere as a change that I can find.

This came up as a user query about some old code of Taco's on
stackexchange using token_filter


What is the intended replacement for token_filter?


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