Closed gromadan closed 3 years ago
This is bug in OpTeX, thanks for reporting.
When \fontfam
is used then (in almost all cases) the Unicode math font is loaded. Then the classical plain TeX setting is not true. New mathcodes for all math characters are loaded from unimath-codes.opm
file. And \colon
declaration is missing here. The mentioned file loads math codes for all control sequences declared in "a standard" unimath-table.opm but \colon
is misssing here too. The unimath-codes.opm
adds some exceptions above standard unimath-table.opm
, so I'll add the exception for \colon
here in a new commit.
You can use \mathcolon
instead \colon
now, because \mathcolon
is declared. Or you can set \let\colon=\mathcolon
after Unicode math font is loaded already.
Note that A\mathcolon B
does no spaces outside math mode but it creates a little space after colon inside math mode. Second note: classical plain TeX ends by error when \colon
is used outside math mode.
If you change the font using
\fontfam
, the macro\colon
stops working. For instance,Prints the colon in CM fonts at size 10pt. Curiously enough, if you do the following:
then the result is correct. Although colon should be 603A and 613A stands usually for period. The same seems to happen with any other font family loaded by
\fontfam
.