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Diffstat (limited to 'Master/texmf-dist/tex/context/base/mkxl/typo-ovl.mkxl')
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1 files changed, 116 insertions, 0 deletions
diff --git a/Master/texmf-dist/tex/context/base/mkxl/typo-ovl.mkxl b/Master/texmf-dist/tex/context/base/mkxl/typo-ovl.mkxl new file mode 100644 index 00000000000..b3ba2e78388 --- /dev/null +++ b/Master/texmf-dist/tex/context/base/mkxl/typo-ovl.mkxl @@ -0,0 +1,116 @@ +%D \module +%D [ file=lang-ovl, +%D version=2016.02.03, % about that time (maybe earlier) +%D title=\CONTEXT\ Typesetting Macros, +%D subtitle=Overloads, +%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 Typesetting Macros / Overloads} + +\unprotect + +%D See \LUA\ file for comments. I'll probably never use this code outside the +%D project where it had some experimental use. (Occasionally we do some spell +%D checking and suspicious word usage marking.) So there is not much documentation +%D here. Keep in mind that overloading only makes sense for content that gets +%D replaced as otherwise normal attributes make more sense. Using this otherwise +%D is weird but one never knows what users come up with. + +\registerctxluafile{typo-ovl}{autosuffix} + +\definesystemattribute[overloads][public,global] + +\installcorenamespace{overloads} + +%D Watch how we abuse highlights. + +\newcount\c_typo_overload_font_id + +\protected\def\typo_overloads_define#1% + {\begingroup + % we pack so we avoid interference (and for sure don't process!) + \setbox\scratchbox\hpack\bgroup + \global\c_typo_overload_font_id\fontid\font + \resetallattributes % so we only change what gets set + \highlight[#1]% + \signalcharacter + \global\c_typo_overload_font_id + \ifnum\c_typo_overload_font_id=\fontid\font + \zerocount + \else + \fontid\font + \fi + \egroup + \global\expandafter\chardef\csname\??overloads#1\endcsname + \clf_overloadsattribute{#1}\c_typo_overload_font_id\scratchbox + \endgroup} + +\permanent\protected\def\setoverloads[#1]% + {\ifcsname\??overloads#1\endcsname\else + \typo_overloads_define{#1}% + \fi + \c_attr_overloads\csname\??overloads#1\endcsname} + +\permanent\protected\def\registeroverloads[#1]% + {\ifcsname\??overloads#1\endcsname\else + \typo_overloads_define{#1}% + \fi} + +\permanent\protected\def\resetoverloads + {\c_attr_overloads\attributeunsetvalue} + +%D We hook this into the replacement module, probably the only place where it makes +%D sense. Here is an adapted version of an example: +%D +%D \starttyping +%D \replaceword[basics][new] [old] +%D \replaceword[basics][now] [hl3->never] +%D \replaceword[basics][never][now] +%D \replaceword[basics][heck] [] +%D +%D \definehighlight[hl1][style={\setbar[underbar]\red\setcharactercasing[WORD]\bf}] +%D \definehighlight[hl2][style={\setbar[overbar]\blue\setcharactercasing[Words]}] +%D \definehighlight[hl3][style={\setbar[overstrike]\green\bs}] +%D +%D \registeroverloads[hl1] +%D \registeroverloads[hl2] +%D \registeroverloads[hl3] +%D +%D \start \setreplacements[basics][hl1] What the heck, it's now or never, isn't it new? \stop \par +%D \start \setreplacements[basics][hl2] What the heck, it's now or never, isn't it new? \stop \par +%D \start \setreplacements[basics][hl1] What the heck, it's now or never, isn't it new? \stop \par +%D \start \setreplacements[basics] What the heck, it's now or never, isn't it new? \stop \par +%D \stoptyping +%D +%D We used it to mark synonyms that should not be corrected by the editor. Sort of the +%D reverse of not having a word in a vetted wordlist. A bit out of place in a typesetting +%D system. If really needed we can support multiple words seperataed by spaces but I didn't +%D need it. And \unknown\ fonts are supported but at fixed size! + +\ifdefined\setreplacements + + \pushoverloadmode + + \permanent\tolerant\protected\def\setreplacements[#1]#*[#2]% + {\clf_setreplacements{#1}% + \ifparameter#2\or + \setoverloads[#2]% + \else + \resetoverloads + \fi} + + \popoverloadmode + +\else + + % something weird + +\fi + +\protect |