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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 | 81 |
1 files changed, 78 insertions, 3 deletions
diff --git a/doc/context/sources/general/manuals/luametatex/luametatex-math.tex b/doc/context/sources/general/manuals/luametatex/luametatex-math.tex index 1b26c1ad1..d7bd50eea 100644 --- a/doc/context/sources/general/manuals/luametatex/luametatex-math.tex +++ b/doc/context/sources/general/manuals/luametatex/luametatex-math.tex @@ -1035,6 +1035,7 @@ undefined will get presets, quite likely zero): \NC \prm {Umathaccentbottomovershoot} \NC \NC \NR \NC \prm {Umathaccentsuperscriptdrop} \NC \NC \NR \NC \prm {Umathaccentsuperscriptpercent} \NC \NC \NR +\NC \prm {Umathaccentextendmargin} \NC margins added to automatically extended accents \NC \NR \NC \prm {Umathflattenedaccenttopshiftup} \NC the amount that a wide top accent is shifted up \NC \NR \NC \prm {Umathflattenedaccentbottomshiftdown} \NC the amount that a wide bottom accent is shifted down \NC \NR \NC \prm {Umathdelimiterpercent} \NC \NC \NR @@ -1070,6 +1071,7 @@ defaults and tweak them in the goodie files: \NC AccentBottomOvershoot \NC \prm {Umathaccentbottomovershoot} \NC 0 \NC \NR \NC AccentSuperscriptDrop \NC \prm {Umathaccentsuperscriptdrop} \NC 0 \NC \NR \NC AccentSuperscriptPercent \NC \prm {Umathaccentsuperscriptpercent} \NC 0 \NC \NR +\NC AccentExtendMargin \NC \prm {Umathaccentextendmargin} \NC 0 \NC \NR \NC FlattenedAccentTopShiftUp \NC \prm {Umathflattenedaccenttopshiftup} \NC undefined \NC \NR \NC FlattenedAccentBottomShiftDown \NC \prm {Umathflattenedaccentbottomshiftdown} \NC undefined \NC \NR \NC DelimiterPercent \NC \prm {Umathdelimiterpercent} \NC 0 \NC \NR @@ -1795,16 +1797,27 @@ concerns the width. \stopsubsection -\startsubsection[title={Building radicals with \prm {Uradical} and \prm {Uroot}}] +\startsubsection[title={Building radicals with \prm {Uradical}, \prm {Uroot} and \prm {Urooted}}] \topicindex {math+radicals} +\topicindex {math+roots} The new primitive \prm {Uroot} allows the construction of a radical noad including a degree field. Its syntax is an extension of \prm {Uradical}: \starttyping -\Uradical <fam integer> <char integer> <radicand> -\Uroot <fam integer> <char integer> <degree> <radicand> +\Uradical + <fam integer> <left char integer> + <content> +\Uroot + <fam integer> <left char integer> + <degree> + <content> +\Urooted + <fam integer> <left char integer> + <fam integer> <right char integer> + <degree> + <content> \stoptyping The placement of the degree is controlled by the math parameters \prm @@ -1812,6 +1825,35 @@ The placement of the degree is controlled by the math parameters \prm {Umathradicaldegreeraise}. The degree will be typeset in \prm {scriptscriptstyle}. +In \CONTEXT\ we use \prm {Urooted} to wrap something in an \quote {annuity} +umbrella where there is a symbol at the end that has to behave like the radical +does at the left end: adapt its size. In order to support variants this primitive +supports two delimiters. + +{\em todo: mention optional keywords} + +\stopsubsection + +\startsubsection[title={Tight delimiters with \prm {Udelimited}}] + +\topicindex {math+radicals} +\topicindex {math+delimiters} + +This new primitive is like \prm {Rooted} in that it takes two delimiters but it +takes no degree and no rule is drawn. + +\starttyping +\Udelimited + <fam integer> <left char integer> + <fam integer> <right char integer> + <content> +\stoptyping + +In \CONTEXT\ we use it for fourier notations in which case there is only a right +symbol (like a hat). + +{\em todo: mention optional keywords} + \stopsubsection \startsubsection[title={Super- and subscripts}] @@ -2845,6 +2887,39 @@ You'll notice that we apply more severe penalties at the edges: \stopsection +\startsubsection[title={\prm {Umathdiscretionary} and \prm {hmcode}}] + +\topicindex {math+discretionaries} + +The usual \prm {discretionary} command is supported in math mode but it has the +disadvantage that one needs to make sure that the content triplet does the math +right (especially the style). This command takes an optional class specification. + +\starttyping +\Umathdiscretionary [class n] {+} {+} {+} +\stoptyping + +It uses the same logic as \prm {mathchoice} but in this case we handle three +snippets in the current style. + +A fully automatic mechanism kicks in when a character has a \prm {hmcode} set: + +\starttabulate[|c|l|p|] +\DB bit \BC meaning \BC explanation \NC \NR +\TB +\NC 1 \NC normal \NC a discretionary is created with the same components \NC \NR +\NC 2 \NC italic \NC following italic correction is kept with the component \NC \NR +\LL +\stoptabulate + +So we can say: + +\starttyping +\hmcode `+ 3 +\stoptyping + +When the \type {italic} bit is set italic correction is kept at a linebreak. + \stopchapter \stopcomponent |