CTAN sync 202104200300

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diff --git a/macros/optex/base/optex.ini b/macros/optex/base/optex.ini
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+%% This is part of the OpTeX project, see http://petr.olsak.net/optex
+
+%% OpTeX ini file
+%% Petr Olsak <project started from: Jan. 2020>
+
+% Catcodes:
+
+\catcode `\{=1 % left brace is begin-group character
+\catcode `\}=2 % right brace is end-group character
+\catcode `\$=3 % dollar sign is math shift
+\catcode `\&=4 % ampersand is alignment tab
+\catcode `\#=6 % hash mark is macro parameter character
+\catcode `\^=7 % 
+\catcode `\^^K=7 % circumflex and uparrow are for superscripts
+\catcode `\^^A=8 % downarrow is for subscripts
+\catcode `\^^I=10 % ascii tab is a blank space
+\catcode `\_=11 % underline can be used in control sequences
+\catcode `\~=13 % tilde is active
+\catcode `\^^a0=13 % non breaking space in Unicode
+\catcode 127=12 % normal character
+
+% OpTeX version
+
+\def\optexversion{1.01 Mar.2021}
+\def\fmtname{OpTeX}
+\let\fmtversion=\optexversion
+
+% Engine testing:
+
+\newlinechar=`\^^J
+\ifx\directlua\undefined 
+   \message{This format is based only on LuaTeX, use luatex -ini optex.ini^^J} 
+   \endinput \fi
+
+\ifx\bgroup\undefined \else
+   \message{This file can be used only for format initialisation, use luatex -ini^^J}
+   \endinput \fi
+
+% Basic .opm syntax:
+
+\let\_endcode =\endinput
+\def \_codedecl #1#2{\message{#2^^J}}%  information about .opm file
+\long\def\_doc#1\_cod#2 {} % skip documentation
+
+% Initialization:
+
+\message{OpTeX (Olsak's Plain TeX) initialization <\optexversion>^^J}
+
+\input prefixed.opm        % prefixed primitives and code syntax
+\input luatex-ini.opm      % luaTeX initialization
+\input basic-macros.opm    % basic macros
+\input alloc.opm           % allocators for registers
+\input if-macros.opm       % special \if-macros, \is-macros and loops
+\input parameters.opm      % parameters setting
+\input more-macros.opm     % OpTeX useful macros  (todo: doc)
+\input keyval.opm          % key=value dictionaries
+\input plain-macros.opm    % plainTeX macros
+\input fonts-preload.opm   % preloaded Latin Modern fonts  
+\input fonts-resize.opm    % font resizing (low-level macros)
+\input fonts-select.opm    % font selection system
+\input math-preload.opm    % math fams CM + AMS preloaded
+\input math-macros.opm     % basic macros for math plus mathchardefs
+\input math-unicode.opm    % macros for loading UnicodeMath fonts
+\input fonts-opmac.opm     % font managing macros from OPmac
+\input output.opm          % output routine
+\input margins.opm         % macros for margins setting
+\input colors.opm          % colors
+\input ref-file.opm        % ref file
+\input references.opm      % references
+\input hyperlinks.opm      % hyperlinks
+\input maketoc.opm         % maketoc
+\input outlines.opm        % PDF outlines
+\input pdfuni-string.opm   % PDFunicode strings for outlines
+\input sections.opm        % titles, chapters, sections
+\input lists.opm           % lists, \begitems, \enditems
+\input verbatim.opm        % verbatim
+\input hi-syntax.opm       % syntax highlighting of verbatim listimgs
+\input graphics.opm        % graphics
+\input table.opm           % table macro
+\input multicolumns.opm    % more columns by \begmulti ...\endmulti
+\input cite-bib.opm        % Bibliography, \cite
+\input makeindex.opm       % Make index and sorting
+\input fnotes.opm          % \fnotes, \mnotes
+\input styles.opm          % styles \report, \letter
+\input logos.opm           % standard logos
+\input uni-lcuc.opm        % Setting lccodes and uccodes for Unicode characters
+\input hyphen-lan.opm      % initialization of hyphenation patterns
+\input languages.opm       % languages
+\input others.opm          % miscenaleous
+
+\_directlua{
+   % preload OpTeX's lua code into format as bytecode
+   lua.bytecode[1] = assert(loadfile(kpse.find_file("optex", "lua")))
+}
+
+\_everyjob = {%
+   \_message{This is OpTeX (Olsak's Plain TeX), version <\optexversion>^^J}%
+   \_mathchardef\_fnotestack=\_pdfcolorstackinit page {0 g 0 G}%
+   \_directlua{lua.bytecode[1]()}% load OpTeX's Lua code
+   \_mathsbon % replaces \int_a^b to \int _a^b
+   \_inputref % inputs \jobname.ref if exists
+}
+
+\_dump
+
+\_endcode % ------------------------------
+