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Diffstat (limited to 'tex/context/base/mkiv/spac-chr.mkiv')
| -rw-r--r-- | tex/context/base/mkiv/spac-chr.mkiv | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/tex/context/base/mkiv/spac-chr.mkiv b/tex/context/base/mkiv/spac-chr.mkiv new file mode 100644 index 000000000..562fb940c --- /dev/null +++ b/tex/context/base/mkiv/spac-chr.mkiv @@ -0,0 +1,95 @@ +%D \module +%D [ file=spac-chr, +%D version=2011.05.24, % code moved from core-spa.mkiv +%D title=\CONTEXT\ Spacing Macros, +%D subtitle=Characters, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See mreadme.pdf for +%C details. + +\writestatus{loading}{ConTeXt Spacing Macros / Characters} + +\unprotect + +\registerctxluafile{spac-chr}{1.001} + +\definesystemattribute[characters][public] + +%D The nobreakspace is special as it needs to keep track of the space being +%D flexible. Another option is to use space (glue) nodes and tag them as characters +%D instead. No big deal but takes a moment of coding. So, as a prelude we +%D tag the nobreakspace only. Interesting is that it also fits better in the +%D tagging mechanism. +%D +%D But we need to do some checking as from then on we no longer can compare +%D them in a string. So this needs thinking. Not that we can compare the +%D nobreakspace now anyway. + +% \unexpanded\def\specialspacecharacter#1{\begingroup\attribute\charactersattribute#1\ \endgroup} +% +% \unexpanded\edef\nobreakspace {\specialspacecharacter{"00A0}} % 1 = left +% \unexpanded\edef\ideographicspace {\specialspacecharacter{"2000}} +% \unexpanded\edef\ideographichalffillspace{\specialspacecharacter{"2001}} +% \unexpanded\edef\twoperemspace {\specialspacecharacter{"2002}} +% \unexpanded\edef\threeperemspace {\specialspacecharacter{"2004}} +% \unexpanded\edef\fourperemspace {\specialspacecharacter{"2005}} +% \unexpanded\edef\sixperemspace {\specialspacecharacter{"2006}} +% \unexpanded\edef\figurespace {\specialspacecharacter{"2007}} +% \unexpanded\edef\punctuationspace {\specialspacecharacter{"2008}} +% \unexpanded\edef\breakablethinspace {\specialspacecharacter{"2009}} +% \unexpanded\edef\hairspace {\specialspacecharacter{"200A}} +% \unexpanded\edef\zerowidthspace {\specialspacecharacter{"200B}} +% \unexpanded\edef\zwnj {\specialspacecharacter{"200C}} +% \unexpanded\edef\zwj {\specialspacecharacter{"200D}} +% \unexpanded\edef\narrownobreakspace {\specialspacecharacter{"202F}} + +% This does not work as spaceskip is only inserted in the case of raggedleft +% and we need to be able to figure out all of them. Which makes me wonder ... +% can't we just always set spaceskip to some value? + +% Making them active is also not an option unless we do that in every +% catcode vector. + +% \nobreakspace {\begingroup\setalignstateattribute\normalUchar"00A0\endgroup} % 1 = left +\edef\nobreakspace {\normalUchar"00A0} % space +\edef\ideographicspace {\normalUchar"2000} % quad/2 +\edef\ideographichalffillspace{\normalUchar"2001} % quad +\edef\twoperemspace {\normalUchar"2002} % quad/2 +% % "2003 % quad == \quad == \hskip\emwidth +\edef\threeperemspace {\normalUchar"2004} % quad/3 +\edef\fourperemspace {\normalUchar"2005} % quad/4 +\edef\sixperemspace {\normalUchar"2006} % quad/6 +\edef\figurespace {\normalUchar"2007} % width of zero +\edef\punctuationspace {\normalUchar"2008} % width of period +\edef\breakablethinspace {\normalUchar"2009} % quad/8 +\edef\hairspace {\normalUchar"200A} % quad/8 +\edef\zerowidthspace {\normalUchar"200B} % 0 +\edef\zerowidthnonjoiner {\normalUchar"200C} % 0 +\edef\zerowidthjoiner {\normalUchar"200D} % 0 +\edef\narrownobreakspace {\normalUchar"202F} % quad/8 +% % "205F % space/8 (math) +% \zerowidthnobreakspace {\normalUchar"FEFF} +\udef\zerowidthnobreakspace {\penalty\plustenthousand\kern\zeropoint} + +\let\zwnj\zerowidthnonjoiner +\let\zwj \zerowidthjoiner +\let\nbsp\nobreakspace + +\chardef\optionalspace"1F % will be space unless before punctuation + +% Shortcuts: + +% unexpanded as otherwise we need to intercept / cleanup a lot + +\unexpanded\def~{\nobreakspace} + +% Goodies: + +\unexpanded\def\fiveperemspace{\hskip\dimexpr\emwidth/5\relax} + +\protect \endinput + |