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Diffstat (limited to 'doc/context/sources/general/manuals/luametatex/luametatex-math.tex')
| -rw-r--r-- | doc/context/sources/general/manuals/luametatex/luametatex-math.tex | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/doc/context/sources/general/manuals/luametatex/luametatex-math.tex b/doc/context/sources/general/manuals/luametatex/luametatex-math.tex index 88d3eafc3..66a62ee72 100644 --- a/doc/context/sources/general/manuals/luametatex/luametatex-math.tex +++ b/doc/context/sources/general/manuals/luametatex/luametatex-math.tex @@ -2192,7 +2192,9 @@ influence the spacing. The numbers are the same as for character classes. \topicindex {math+codes} -You can extract the components of a math character. Say that we have defined: +You should not really depend on the number that comes from \prm {Umathcode} because +the engine can (at some point) use a different amount of families and classes. Given this, +you can extract the components of a math character. Say that we have defined: \starttyping \Umathcode 1 2 3 4 @@ -2201,17 +2203,21 @@ You can extract the components of a math character. Say that we have defined: then \starttyping -[\Umathcharclass1] [\Umathcharfam1] [\Umathcharslot1] +[\Umathcharclass\Umathcode1] [\Umathcharfam\Umathcode1] [\Umathcharslot\Umathcode1] \stoptyping -will return: +which will return: \starttyping [2] [3] [4] \stoptyping -These commands are provided as convenience. Before they come available you could -do the following: +You can of course store the code in for instance a register and use that as +argument. The three commands also accept a specification (and maybe more in the +future). + +These commands are provided as convenience. Before they became available you +could do the following: \starttyping \def\Umathcharclass{\numexpr |