diff options
Diffstat (limited to 'doc/context/sources/general/manuals/luametatex/luametatex-math.tex')
| -rw-r--r-- | doc/context/sources/general/manuals/luametatex/luametatex-math.tex | 48 |
1 files changed, 33 insertions, 15 deletions
diff --git a/doc/context/sources/general/manuals/luametatex/luametatex-math.tex b/doc/context/sources/general/manuals/luametatex/luametatex-math.tex index 2bfffb64c..1b26c1ad1 100644 --- a/doc/context/sources/general/manuals/luametatex/luametatex-math.tex +++ b/doc/context/sources/general/manuals/luametatex/luametatex-math.tex @@ -321,11 +321,16 @@ The unaltered ones are: \LL \stoptabulate +% In \LUATEX\ we support the single number primitives *with \type {num} in their +% name) conforming the \XETEX\ method. For the moment that still works but you need +% to figure out the number yourself. The split number variants are more future safe +% with respect to classes and families. We don't document \prm {Umathcharnumdef}, +% \prm {Umathcharnum}, \prm {Umathcodenum} and \prm {Udelcodenum} here any longer. + In \LUATEX\ we support the single number primitives *with \type {num} in their -name) conforming the \XETEX\ method. For the moment that still works but you need -to figure out the number yourself. The split number variants are more future safe -with respect to classes and families. We don't document \prm {Umathcharnumdef}, -\prm {Umathcharnum}, \prm {Umathcodenum} and \prm {Udelcodenum} here any longer. +name) conforming the \XETEX\ method. These primitives have been dropped in +\LUAMETATEX\ because we use different ranges and properties, so these numbers +have no (stable) meaning. \starttabulate[|l|l|c|c|c|] \DB primitive \BC \BC class \BC family \BC character \NC \NR @@ -777,7 +782,7 @@ with are no longer hard coded but can be set at runtime: \NC \prm {Umathdegreevariant} \NC doublesuperscript \NC \NR \NC \prm {Umathaccentvariant} \NC cramped \NC \NR \NC \prm {Umathtopaccentvariant} \NC cramped \NC \NR -\NC \prm {Umathbotaccentvariant} \NC cramped \NC \NR +\NC \prm {Umathbottomaccentvariant} \NC cramped \NC \NR \NC \prm {Umathoverlayaccentvariant} \NC cramped \NC \NR \NC \prm {Umathnumeratorvariant} \NC numerator \NC \NR \NC \prm {Umathdenominatorvariant} \NC denominator \NC \NR @@ -1935,6 +1940,25 @@ font metrics are involved we have a different code path for traditional fonts en \stopsubsection +\startsubsection[title={Fractions and the new \prm {Ustretched} and \prm {Ustretchedwithdelims}}] + +\topicindex {math+fractions} + +These commands are similar the regular rule separated fractions but expect a delimiter +that then will be used instead. This permits for instance the use of horizontal +extensible arrows. When no extensible is possible (this is a font property) the given +glyph is centered. + +Normally one will pass a specific delimiter and not a character, if only because +these come from the non \ASCII\ ranges: + +\starttyping +{ \Ustretched <delimiter> <options> {1} {2} } +{ \Ustretchedwithdelims <delimiter> () <options> {1} {2} } +\stoptyping + +\stopsubsection + \startsubsection[title={Fractions and the new \prm {Uskewed} and \prm {Uskewedwithdelims}}] \topicindex {math+fractions} @@ -1958,8 +1982,8 @@ rendering. Of course a user can also mess around a bit with the parameters The syntax used here is: \starttyping -{ {1} \Uskewed / <options> {2} } -{ {1} \Uskewedwithdelims / () <options> {2} } +{ \Uskewed / <options> {1} {2} } +{ \Uskewedwithdelims / () <options> {1} {2} } \stoptyping where the options can be \type {noaxis} and \type {exact}. By default we add half @@ -1999,10 +2023,6 @@ For Latin Modern the result looks as follows: \stoptabulate \stop -For good old times we also have \prm {skewed} and \prm {skewedwithdelims} -although it is unlikely that one will notice as it only makes sense in the -updated approach. - The \type {\over} and related primitives have the form: \starttyping @@ -2025,10 +2045,8 @@ The optional arguments are also supported but we have one extra option: \type The complete list of these commands is: \prm {Uabove}, \prm {Uatop}, \prm {Uover}, \prm {Uabovewithdelims}, \prm {Uatopwithdelims}, \prm {Uoverwithdelims}, -\prm {UUskewed}, \prm {UUskewedwithdelims}. As with other extensions we use a -leading \type {U} and because we already had extra skew related primitives we end -up with a \type {UU} there. This obscurity is not that big an issue because -normally such primitives are wrapped in a macro. Here are a few examples: +\prm {Uskewed}, \prm {Uskewedwithdelims}. As with other extensions we use a +leading \type {U}. Here are a few examples: \startbuffer $\Uover { 1234} { 5678} $\quad |