On 11/8/2024 6:05 PM, Joseph Wright wrote:
True but when you want half a dozen tokens in an argument, length counts
:) We use quite a lot of ";" currently to implement our expandable
floating point stuff, and that likely has to stay in macros even in
Lua(Meta)TeX for ever - I fear subtle differences from pdfTeX if we
tried to implement differently.
sure. (btw, fwiw using \relax as sentinal is faster because there is no
pushback needed and and internally - as macro body - a ; or \relax takes
the same amount of memory and i suppose most goes into macros but
performance and memory consumption is a topic on its own and probably
very different between macro packages)
one should also make sure an expression doesn't scan ahead, if only
because it will expand whats coming next; basically \relax or matching
() should have been mandate and it's a design flaw.
Arguably yes but e-TeX was finalised in 1999 - that was an discussion
for a previous millennium (at least from a plain/LaTeX point of view) :)
as much of tex ..
Indeed - I know you have a different view on how to handle that than the
LaTeX one :)
the fact that there was never a fundamental follow-up etex (language
wise) kind of tells a story i guess but let's not waste time on that
Hans
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