Hi Hraban,
On Sat, 2025-11-29 at 16:26 +0100, Henning Hraban Ramm wrote:
> Can I apply a format code, e.g. for rounding, to use such a dimension
> with \unit?
I'm sure that this is possible from TeX, but as soon as you're doing
something complicated like this, it's easiest to use Lua:
\startluacode
interfaces.implement {
name = "FormatUnit",
arguments = {
"dimension",
"string",
},
actions = { function(from, to)
return number.todimen(from, to, [[%M\thinspace %s]])
end, context },
}
\stopluacode
\unprotect
\protected\def\FormatUnit[#S#1]#*#2{\clf_FormatUnit{#1}{#2}}
\protect
\startTEXpage[offset=1ex]
\cdef\Units{pt,mm,cm,in}
\bTABLE[
leftframe=off,
rightframe=off,
loffset=0.5em,
roffset=0.5em,
align=flushright,
]
% We can't nest \startprocesscommalist or \dowith, so we need to
use one
% of each.
\dowith{\Units}{
\bTR
\startprocesscommacommand[\Units]
\bTD \FormatUnit[1#1]{##1} \eTD
\stopprocesscommacommand
\eTR
}
\eTABLE
\FormatUnit[10pt]{in}
\FormatUnit[\textwidth]{pc}
\FormatUnit[\dimexpr 1cm + 1in]{mm}
\stopTEXpage
Thanks,
-- Max
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