On 12/4/2014 10:56 PM, Joseph Wright wrote:
Hello all,
With minimal example
{\tracingassigns=1\begingroup\catcode`\+=11\endgroup}
\bye
pdfTeX writes the expected data to the log:
{changing \catcode43=12}
{into \catcode43=11}
and with \tracingall or similar also reports restoring catcodes at the
end of groups. That's not the case with LuaTeX: no catcode logging. Is
this deliberate or a bug? If it's deliberate, what's the reasoning: it's
tricky for doing a diff against pdfTeX log.
luatex has catcode tables and it would add complexity; a more natural
way in luatex is to define a catcode table, and switch catcodetables and
these are reported in the log
Hans
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