[luatex] Adding a callback before trailing spaces are removed from a line of input

[Hans Hagen]

On 8/29/2021 6:38 PM, Vítek Novotný wrote:

> And yet, you are included in the copyright line of the Markdown package,
> since you contributed to the lunamark parser:
> 
>      $ docker run --rm -i witiko/markdown markdown-cli -v
>      markdown-cli.lua (Markdown) 2.10.0-64-ge9b5180
>      Copyright (C) 2009-2016 John MacFarlane, Hans Hagen
>      Copyright (C) 2016-2021 Vít Novotný
>      License: LPPL 1.3c
sure, i remember that i helped make that one faster and more efficient; 
i probabloy have some code laying around from when i looked into it but 
when simethign is supporte din conetxt that doesn't mean i'm a user 
myself (probably most of what i add to context etc is not used by 
myself, it's often about challenges and fun)

Hans

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