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authorNorbert Preining <norbert@preining.info>2022-09-06 03:01:30 +0000
committerNorbert Preining <norbert@preining.info>2022-09-06 03:01:30 +0000
commitd1c5ad9e2f25f73b84c87ef3bcec2432ff6e4ac6 (patch)
tree9cfbc16886e2e3ac4be092c1158d022ab816023e /macros/unicodetex/latex/xgreek/xgreek.dtx
parent428a6bcc4c634ccfe1ea8d9c1a3e4318037a0fee (diff)
CTAN sync 202209060301
Diffstat (limited to 'macros/unicodetex/latex/xgreek/xgreek.dtx')
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+%% \CharacterTable
+%% {Upper-case \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
+%% Lower-case \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z
+%% Digits \0\1\2\3\4\5\6\7\8\9
+%% Exclamation \! Double quote \" Hash (number) \#
+%% Dollar \$ Percent \% Ampersand \&
+%% Acute accent \' Left paren \( Right paren \)
+%% Asterisk \* Plus \+ Comma \,
+%% Minus \- Point \. Solidus \/
+%% Colon \: Semicolon \; Less than \<
+%% Equals \= Greater than \> Question mark \?
+%% Commercial at \@ Left bracket \[ Backslash \\
+%% Right bracket \] Circumflex \^ Underscore \_
+%% Grave accent \` Left brace \{ Vertical bar \|
+%% Right brace \} Tilde \~}
+%%
+%\iffalse
+%
+% (c) Copyright 2007-2022 Apostolos Syropoulos
+% This program can be redistributed and/or modified under the
+% terms of the LaTeX Project Public License Distributed from
+% http://www.latex-project.org/lppl.txt; either
+% version 1.3c of the License, or any later version.
+%
+% This work has the LPPL maintenance status `maintained'.
+%
+% Please report errors or suggestions for improvement to
+%
+% Apostolos Syropoulos (asyropoulos@yahoo.com)
+%
+%\fi
+% \CheckSum{1930}
+% \iffalse This is a Metacommentxel
+%
+%<xgreek, >\ProvidesFile{xgreek.sty}
+%<xelistings, >\ProvidesFile{xelistings}
+%
+%<xgreek, > [2022/09/04 v3.2.0 Package `xgreek.sty']
+%<xelistings, > [2022/09/04 v1.0 Package `xelistings.sty']
+%
+% \begin{macrocode}
+%<*driver>
+\documentclass{ltxdoc}
+\GetFileInfo{xgreek.drv}
+\usepackage{xltxtra}
+\begin{document}
+%\newopentypefeature{Contextuals}{Alts}{+calt}
+\setmainfont[Mapping=tex-text,Script=Greek,
+ SmallCapsFeatures={Contextuals=Alternate}]{Universal Modern}
+\setmonofont{UM Typewriter}
+\setsansfont[Mapping=tex-text]{GFS Neohellenic}
+ \DocInput{xgreek.dtx}
+\end{document}
+%</driver>
+% \end{macrocode}
+% \fi
+%\StopEventually{}
+%\title{Greek Language Support for\\ \XeLaTeX\ and Lua\LaTeX}
+%\author{Apostolos Syropoulos\\
+% Xanthi, Greece\\
+% \texttt{asyropoulos@yahoo.com}}
+% \date{2009/11/23\\ Last Updated 2022/09/04}
+%\maketitle
+% \begin{abstract}
+% The \textsf{xgreek} package provides rudimentary support for Greek language
+% typesetting with \XeLaTeX and Lua\LaTeX. In particular, it provides support for modern
+% Greek (either monotonic or polytonic) and ancient Greek.
+%\end{abstract}
+%
+%\section{Introduction}
+%
+% The \textsf{xgreek} package provides rudimentary support for Greek language
+% typesetting with \XeLaTeX and Lua\LaTeX. Users will be able to typeset documents in
+% either modern Greek (monotonic or polytonic) or ancient Greek by selecting the appropriate
+% package option. The default ``language'' is monotonic Greek.
+%
+% Support for Lua\LaTeX\ was provided by Javier Bezos.
+%
+% \section{The Source Code of \textsf{xgreek}}
+% According to the Unicode standard
+%\begin{center}
+%|http://www.unicode.org/Public/UNIDATA/UnicodeData.txt|
+%\end{center}
+% the uppercase form of \textsc{greek small letter epsilon with tonos} is
+% \textsc{greek capital letter eta with tonos}. This is certainly wrong. The main reason
+% is that accents are not part of the letter as for example is the case with
+% \textsc{latin small letter k with caron}. Since, \XeLaTeX\ blindly follows the Unicode
+% standard, commands like |\MakeUppercase| produce wrong output. For this reason
+% I first need to set up the correct |\uccode|s and |\lccode|s.
+% \begin{macrocode}
+%<*xgreek>
+\message{Package 'xgreek' version 3.1.0 by Apostolos Syropoulos}
+\global\lccode"0370="0371 \global\uccode"0370="0370
+\global\lccode"0371="0371 \global\uccode"0371="0370
+\global\lccode"0372="0373 \global\uccode"0372="0372
+\global\lccode"0373="0373 \global\uccode"0373="0372
+\global\lccode"0376="0377 \global\uccode"0376="0376
+\global\lccode"0377="0377 \global\uccode"0377="0376
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+\global\lccode"03FE="037C \global\uccode"03FE="03FE
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+\global\lccode"1F8E="1F86 \global\uccode"1F8E="1FBC
+\global\lccode"1F8F="1F87 \global\uccode"1F8F="1FBC
+\global\lccode"1F90="1F90 \global\uccode"1F90="1FCC
+\global\lccode"1F91="1F91 \global\uccode"1F91="1FCC
+\global\lccode"1F92="1F92 \global\uccode"1F92="1FCC
+\global\lccode"1F93="1F93 \global\uccode"1F93="1FCC
+\global\lccode"1F94="1F94 \global\uccode"1F94="1FCC
+\global\lccode"1F95="1F95 \global\uccode"1F95="1FCC
+\global\lccode"1F96="1F96 \global\uccode"1F96="1FCC
+\global\lccode"1F97="1F97 \global\uccode"1F97="1FCC
+\global\lccode"1F98="1F90 \global\uccode"1F98="1FCC
+\global\lccode"1F99="1F91 \global\uccode"1F99="1FCC
+\global\lccode"1F9A="1F92 \global\uccode"1F9A="1FCC
+\global\lccode"1F9B="1F93 \global\uccode"1F9B="1FCC
+\global\lccode"1F9C="1F94 \global\uccode"1F9C="1FCC
+\global\lccode"1F9D="1F95 \global\uccode"1F9D="1FCC
+\global\lccode"1F9E="1F96 \global\uccode"1F9E="1FCC
+\global\lccode"1F9F="1F97 \global\uccode"1F9F="1FCC
+\global\lccode"1FA0="1FA0 \global\uccode"1FA0="1FFC
+\global\lccode"1FA1="1FA1 \global\uccode"1FA1="1FFC
+\global\lccode"1FA2="1FA2 \global\uccode"1FA2="1FFC
+\global\lccode"1FA3="1FA3 \global\uccode"1FA3="1FFC
+\global\lccode"1FA4="1FA4 \global\uccode"1FA4="1FFC
+\global\lccode"1FA5="1FA5 \global\uccode"1FA5="1FFC
+\global\lccode"1FA6="1FA6 \global\uccode"1FA6="1FFC
+\global\lccode"1FA7="1FA7 \global\uccode"1FA7="1FFC
+\global\lccode"1FA8="1FA0 \global\uccode"1FA8="1FFC
+\global\lccode"1FA9="1FA1 \global\uccode"1FA9="1FFC
+\global\lccode"1FAA="1FA2 \global\uccode"1FAA="1FFC
+\global\lccode"1FAB="1FA3 \global\uccode"1FAB="1FFC
+\global\lccode"1FAC="1FA4 \global\uccode"1FAC="1FFC
+\global\lccode"1FAD="1FA5 \global\uccode"1FAD="1FFC
+\global\lccode"1FAE="1FA6 \global\uccode"1FAE="1FFC
+\global\lccode"1FAF="1FA7 \global\uccode"1FAF="1FFC
+\global\lccode"1FB0="1FB0 \global\uccode"1FB0="1FB8
+\global\lccode"1FB1="1FB1 \global\uccode"1FB1="1FB9
+\global\lccode"1FB2="1FB2 \global\uccode"1FB2="1FBC
+\global\lccode"1FB3="1FB3 \global\uccode"1FB3="1FBC
+\global\lccode"1FB4="1FB4 \global\uccode"1FB4="1FBC
+\global\lccode"1FB6="1FB6 \global\uccode"1FB6="0391
+\global\lccode"1FB7="1FB7 \global\uccode"1FB7="1FBC
+\global\lccode"1FB8="1FB0 \global\uccode"1FB8="1FB8
+\global\lccode"1FB9="1FB1 \global\uccode"1FB9="1FB9
+\global\lccode"1FBA="1F70 \global\uccode"1FBA="0391
+\global\lccode"1FBB="1F71 \global\uccode"1FBB="0391
+\global\lccode"1FBC="1FB3 \global\uccode"1FBC="1FBC
+\global\lccode"1FBD="1FBD \global\uccode"1FBD="1FBD
+\global\lccode"1FC2="1FC2 \global\uccode"1FC2="1FCC
+\global\lccode"1FC3="1FC3 \global\uccode"1FC3="1FCC
+\global\lccode"1FC4="1FC4 \global\uccode"1FC4="1FCC
+\global\lccode"1FC6="1FC6 \global\uccode"1FC6="0397
+\global\lccode"1FC7="1FC7 \global\uccode"1FC7="1FCC
+\global\lccode"1FC8="1F72 \global\uccode"1FC8="0395
+\global\lccode"1FC9="1F73 \global\uccode"1FC9="0395
+\global\lccode"1FCA="1F74 \global\uccode"1FCA="0397
+\global\lccode"1FCB="1F75 \global\uccode"1FCB="0397
+\global\lccode"1FCC="1FC3 \global\uccode"1FCC="1FCC
+\global\lccode"1FD0="1FD0 \global\uccode"1FD0="1FD8
+\global\lccode"1FD1="1FD1 \global\uccode"1FD1="1FD9
+\global\lccode"1FD2="1FD2 \global\uccode"1FD2="03AA
+\global\lccode"1FD3="1FD3 \global\uccode"1FD3="03AA
+\global\lccode"1FD6="1FD6 \global\uccode"1FD6="0399
+\global\lccode"1FD7="1FD7 \global\uccode"1FD7="03AA
+\global\lccode"1FD8="1FD0 \global\uccode"1FD8="1FD8
+\global\lccode"1FD9="1FD1 \global\uccode"1FD9="1FD9
+\global\lccode"1FDA="1F76 \global\uccode"1FDA="0399
+\global\lccode"1FDB="1F77 \global\uccode"1FDB="0399
+\global\lccode"1FE0="1FE0 \global\uccode"1FE0="1FE8
+\global\lccode"1FE1="1FE1 \global\uccode"1FE1="1FE9
+\global\lccode"1FE2="1FE2 \global\uccode"1FE2="03AB
+\global\lccode"1FE3="1FE3 \global\uccode"1FE3="03AB
+\global\lccode"1FE4="1FE4 \global\uccode"1FE4="03A1
+\global\lccode"1FE5="1FE5 \global\uccode"1FE5="03A1
+\global\lccode"1FE6="1FE6 \global\uccode"1FE6="03A5
+\global\lccode"1FE7="1FE7 \global\uccode"1FE7="03AB
+\global\lccode"1FE8="1FE0 \global\uccode"1FE8="1FE8
+\global\lccode"1FE9="1FE1 \global\uccode"1FE9="1FE9
+\global\lccode"1FEA="1F7A \global\uccode"1FEA="03A5
+\global\lccode"1FEB="1F7B \global\uccode"1FEB="03A5
+\global\lccode"1FEC="1FE5 \global\uccode"1FEC="1FEC
+\global\lccode"1FF2="1FF2 \global\uccode"1FF2="1FFC
+\global\lccode"1FF3="1FF3 \global\uccode"1FF3="1FFC
+\global\lccode"1FF4="1FF4 \global\uccode"1FF4="1FFC
+\global\lccode"1FF6="1FF6 \global\uccode"1FF6="03A9
+\global\lccode"1FF7="1FF7 \global\uccode"1FF7="1FFC
+\global\lccode"1FF8="1F78 \global\uccode"1FF8="039F
+\global\lccode"1FF9="1F79 \global\uccode"1FF9="039F
+\global\lccode"1FFA="1F7C \global\uccode"1FFA="03A9
+\global\lccode"1FFB="1F7D \global\uccode"1FFB="03A9
+\global\lccode"1FFC="1FF3 \global\uccode"1FFC="1FFC
+% \end{macrocode}
+% Next I define the various strings that correspond to the standard \LaTeX\ captions.
+% I first define the strings for monotonic Greek.
+% \begin{macrocode}
+\def\prefacename{Πρόλογος}%
+\def\refname{Αναφορές}%
+\def\abstractname{Περίληψη}%
+\def\bibname{Βιβλιογραφία}%
+\def\chaptername{Κεφάλαιο}%
+\def\appendixname{Παράρτημα}%
+\def\contentsname{Περιεχόμενα}%
+\def\listfigurename{Κατάλογος σχημάτων}%
+\def\listtablename{Κατάλογος πινάκων}%
+\def\indexname{Ευρετήριο}%
+\def\figurename{Σχήμα}%
+\def\tablename{Πίνακας}%
+\def\partname{Μέρος}%
+\def\enclname{Συνημμένα}%
+\def\ccname{Κοινοποίηση}%
+\def\headtoname{Προς}%
+\def\pagename{Σελίδα}%
+\def\seename{βλέπε}%
+\def\alsoname{βλέπε επίσης}%
+\def\proofname{Απόδειξη}%
+\def\glossaryname{Γλωσσάρι}%
+% \end{macrocode}
+% Macro |\polytonicn@mes| is invoked when polytonic Greek is the main language of the document.
+% \begin{macrocode}
+\def\polytonicn@mes{%
+ \def\refname{Ἀναφορὲς}%
+ \def\indexname{Εὑρετήριο}%
+ \def\figurename{Σχῆμα}%
+ \def\headtoname{Πρὸς}%
+ \def\alsoname{βλέπε ἐπίσης}%
+ \def\proofname{Ἀπόδειξη}%
+}
+% \end{macrocode}
+% Macro |\@ncientn@mes| is invoked when ancient Greek is the main language of the document.
+% \begin{macrocode}
+\def\@ncientn@mes{%
+ \def\prefacename{Προοίμιον}%
+ \def\abstractname{Περίληψις}%
+ \def\bibname{Βιβλιογραφία}%
+ \def\chaptername{Κεφάλαιον}%
+ \def\appendixname{Παράρτημα}%
+ \def\contentsname{Περιεχόμενα}%
+ \def\listfigurename{Κατάλογος σχημάτων}%
+ \def\listtablename{Κατάλογος πινάκων}%
+ \def\indexname{Εὑρετήριον}%
+ \def\tablename{Πίναξ}%
+ \def\partname{Μέρος}%
+ \def\enclname{Συνημμένως}%
+ \def\ccname{Κοινοποίησις}%
+ \def\headtoname{Πρὸς}%
+ \def\pagename{Σελὶς}%
+ \def\seename{ὃρα}%
+ \def\alsoname{ὃρα ὡσαύτως}%
+ \def\proofname{Ἀπόδειξις}%
+ \def\glossaryname{Γλωσσάριον}%
+ \def\refname{Ἀναφοραὶ}%
+ \def\figurename{Σχῆμα}%
+ \def\headtoname{Πρὸς}%
+}
+% \end{macrocode}
+% I redefine |\today| so as to produce dates in Greek. The
+% names of months are defined by the macro |\gr@month|.
+% \begin{macrocode}
+\def\gr@month{%
+ \ifcase\month\or Ιανουαρίου\or Φεβρουαρίου\or Μαρτίου\or Απριλίου\or
+ Μαΐου\or Ιουνίου\or Ιουλίου\or Αυγούστου\or
+ Σεπτεμβρίου\or Οκτωβρίου\or Νοεμβρίου\or Δεκεμβρίου\fi}
+\def\today{\number\day \space \gr@month\space \number\year}
+% \end{macrocode}
+% When either polytonic Greek or ancient Greek is the main language of the document,
+% then the macro |\gr@c@month| becomes active.
+% \begin{macrocode}
+\def\gr@c@month{%
+ \ifcase\month\or Ἰανουαρίου\or Φεβρουαρίου\or Μαρτίου\or Ἀπριλίου\or
+ Μαΐου\or Ἰουνίου\or Ἰουλίου\or Αὐγούστου\or Σεπτεμβρίου\or
+ Ὀκτωβρίου\or Νοεμβρίου\or Δεκεμβρίου\fi}
+% \end{macrocode}
+% Next, I define a few macros that allow one to access characters
+% that are not usually easily accessible from the keyboard (e.g., the sampi or the
+% koppa symbol). The list includes a command for the unicode symbol GREEK ANO TELEIA,
+% which, in some systems, is confused with MIDDLE DOT. The use of command |\numer@lsign|
+% will be explained later.
+% \begin{macrocode}
+\def\anwtonos{ʹ} %GREEK NUMERAl SIGN
+\let\numer@lsign\anwtonos
+\def\katwtonos{͵} %GREEK LOWER NUMERAL SIGN
+\def\koppa{\char"03DF\relax}
+\def\sampi{\char"03E1\relax}
+\def\Digamma{\char"03DC\relax}
+\def\ddigamma{\char"03DD\relax}
+\def\anoteleia{\char"0387\relax}
+\def\euro{\char"20AC\relax}
+\def\permill{\char"2030\relax}
+% \end{macrocode}
+% Many users prefer the use of the letters sigma and tau instead of the stigma symbol in
+% Greek numerals, therefore, by default the |\stigma| command expands to ``στ''.
+% \begin{macrocode}
+\def\stigma{στ\relax}
+% \end{macrocode}
+% The following commands take care of the basic rules of typography. Note that the first command
+% changes the way space is added after punctuation symbols and the last two commands force \LaTeX\
+% to add indentation space to the first paragraph after a header. Since a number of users need, for
+% their own reasons, to be able to disable this particular feature I have introduced a new package
+% option, namely |noindentfirst|, which restores the default behavior. In order to be able
+% to do this I need the original value of the boolean variable |\@afterindentfalse|.
+% \begin{macrocode}
+\frenchspacing
+\let\@saveafterindentfalse\@afterindentfalse
+\let\@afterindentfalse\@afterindenttrue
+\@afterindenttrue
+% \end{macrocode}
+% Lua\LaTeX\ and \XeLaTeX\ have different ways to load hyphenation patterns. Package
+% \textsf{luahyphenrules} by Javier Bezos facilitates this process for people who
+% want to use Lua\LaTeX\ and the ``traditional'' way to load hyphenation patterns.
+% To ensure proper inclusion of LuaTeX staff, I use the following ``idiom'':
+% \begin{center}
+% |\ifx\directlua\undefined |\texttt{\textit{non Lua\LaTeX\ code}}|\else |%
+% \texttt{\textit{Lua\LaTeX\ code}}|\fi|
+% \end{center}
+% \begin{macrocode}
+\ifx\directlua\undefined\else\RequirePackage{luahyphenrules}\fi
+% \end{macrocode}
+% The code that follows specifies which hyphenation patterns will be active. The \XeLaTeX\ code
+% is quite standard and depends on the \textsf{babel} pattern loading mechanism, while the
+% Lua\LaTeX\ code uses the |\HyphenRules| macro, which has essentially the functionality
+% of the |\selectlanguage| macro.
+% \begin{macrocode}
+\DeclareOption{monogreek}{%
+ \ifx\directlua\undefined%
+ \language\l@monogreek\else\HyphenRules{monogreek}\fi%
+}
+\DeclareOption{polygreek}{%
+ \ifx\directlua\undefined%
+ \language\l@polygreek\else\HyphenRules{polygreek}\fi%
+ \polytonicn@mes%
+ \let\gr@month\gr@c@month%
+}
+\DeclareOption{ancientgreek}{%
+ \ifx\directlua\undefined%
+ \language\l@ancientgreek\else\HyphenRules{ancientgreek}\fi%
+ \@ncientn@mes%
+ \let\gr@month\gr@c@month%
+}
+% \end{macrocode}
+% If a user wants to use the stigma symbol in Greek numerals, she should use the
+% |stigma| option.
+% \begin{macrocode}
+\DeclareOption{stigma}{%
+ \def\stigma{\char"03DB\relax}
+}
+% \end{macrocode}
+% As noted above, the new option |noindentfirst| restores the default \LaTeX\ behavior of adding no
+% indentation to the first paragraph after any header.
+% \begin{macrocode}
+\DeclareOption{noindentfirst}{%
+ \let\@afterindentfalse\@saveafterindentfalse
+}
+% \end{macrocode}
+% Nowadays it is customary in Greece to use Greek numerals without the GREEK NUMERAL SIGN at the end
+% of numeral. Thus, the |nonumeralsign| option disables the typesetting of the GREEK NUMERAL SIGN
+% at the end of Greek numerals.
+% \begin{macrocode}
+\DeclareOption{nonumeralsign}{%
+ \let\numer@lsign\relax
+}
+% \end{macrocode}
+% Package \textsf{listings} does not work properly with UTF-8 encoded files. So this
+% option should be used whenever one wants to use this package and see Greek text come out
+% correctly. In versaion 3.1.0 of this package, I had included the code that modifies
+% package \textsf{listings} in the source code of this package. However, this decision
+% was wrong since when one does not use the \texttt{listings} option, processing of the
+% input file stops with an error message about a text line that contains an invalid character.
+% So the best way to solve this problem is to move the code in a different file and load it
+% when the user has specified \texttt{listings} option. To enable this option, I use a boolean
+% variable.
+% \begin{macrocode}
+\newif\if@mylistings
+\@mylistingsfalse
+\DeclareOption{listings}{\@mylistingstrue}
+% \end{macrocode}
+% By default the |monogreek| option is activated.
+% \begin{macrocode}
+\ExecuteOptions{monogreek}
+\ProcessOptions
+% \end{macrocode}
+% If the user has enabled the |listings| option, then it loads the package \textsf{xelistings}
+% \begin{macrocode}
+\if@mylistings
+\RequirePackage{xelistings}
+\fi
+% \end{macrocode}
+% Now I am going to define the macros that typeset alphabetic Greek numerals. The code
+% is borrowed from the greek option for the babel package.
+% \begin{macro}{\gr@ill@value}
+% When the argument of |\greeknumeral| has a value outside of the
+% acceptable bounds ($0 < x < 999999$) a warning will be issued
+% (and nothing will be printed).
+% \begin{macrocode}
+\def\gr@ill@value#1{%
+ \PackageWarning{xgreek}{Illegal value (#1) for greeknumeral}}
+% \end{macrocode}
+% \end{macro}
+% \begin{macro}{\anw@true}
+% \begin{macro}{\anw@false}
+% \begin{macro}{\anw@print}
+% When a large number with three \emph{trailing} zeros is to be
+% printed those zeros \emph{and} the numeric mark need to be
+% discarded. As each `digit' is processed by a separate macro
+% \emph{and} because the processing needs to be expandable we need
+% some helper macros that help remember to \emph{not} print the
+% numeric mark (|\numer@lsign|).
+%
+% The command |\anw@false| switches the printing of the numeric
+% mark off by making |\anw@print| expand to nothing. The command
+% |\anw@true| (re)enables the printing of the numeric marc. These
+% macro's need to be robust in order to prevent improper expansion
+% during writing to files or during |\uppercase|.
+% \begin{macrocode}
+\DeclareRobustCommand\anw@false{%
+ \DeclareRobustCommand\anw@print{}}
+\DeclareRobustCommand\anw@true{%
+ \DeclareRobustCommand\anw@print{\numer@lsign}}
+\anw@true
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\@greeknumeral}
+% This command is used to get Greek numerals. The command uses
+% |\numer@lsign| to get the NUMERAL SIGN. Obviously, when the
+% user has specified the \texttt{no\-numeral\-sign} option, then numeral
+% comes out without the trailing NUMERAL SIGN. However, when a user
+% wants to typeset a Greek numeral, the numeral must come out correctly,
+% regardless of what appears in headers, etc. And that is exactly the
+% reason why this command is inaccessible to users.
+% The command |\@greeknumeral| needs to be \emph{fully} expandable
+% in order to get the right information in auxiliary
+% files. Therefore we use a big |\if|-construction to check the
+% value of the argument and start the parsing at the right level.
+% \begin{macrocode}
+\def\@greeknumeral#1{%
+% \end{macrocode}
+% If the value is negative or zero nothing is printed and a warning
+% is issued.
+% \begin{macrocode}
+ \ifnum#1<\@ne\space\gr@ill@value{#1}%
+ \else
+ \ifnum#1<10\expandafter\gr@num@i\number#1%
+ \else
+ \ifnum#1<100\expandafter\gr@num@ii\number#1%
+ \else
+% \end{macrocode}
+% The available shorthands for 1.000 (|\@m|) and 10.000
+% (|\@M|) are used to save a few tokens.
+% \begin{macrocode}
+ \ifnum#1<\@m\expandafter\gr@num@iii\number#1%
+ \else
+ \ifnum#1<\@M\expandafter\gr@num@iv\number#1%
+ \else
+ \ifnum#1<100000\expandafter\gr@num@v\number#1%
+ \else
+ \ifnum#1<1000000\expandafter\gr@num@vi\number#1%
+ \else
+% \end{macrocode}
+% If the value is too large, nothing is printed and a warning
+% is issued.
+% \begin{macrocode}
+ \space\gr@ill@value{#1}%
+ \fi
+ \fi
+ \fi
+ \fi
+ \fi
+ \fi
+ \fi
+}
+% \end{macrocode}
+% \end{macro}
+%
+% What is left to make complete the definition of command |\greeknumeral| is a set of macros to produce
+% the various digits.
+% \begin{macro}{\gr@num@i}
+% \begin{macro}{\gr@num@ii}
+% \begin{macro}{\gr@num@iii}
+% As there is no ``digit'' representing $0$ in this system, the zeros
+% are simply discarded. When there is a large number with three
+% \emph{trailing} zeros also the numeric mark is discarded.
+% Therefore these macros need to pass the information to each other
+% about the (non-)translation of a zero.
+% \begin{macrocode}
+\def\gr@num@i#1{%
+ \ifcase#1\or α\or β\or γ\or δ\or ε\or \stigma\or ζ\or η\or θ\fi
+ \ifnum#1=\z@\else\anw@true\fi\anw@print}
+\def\gr@num@ii#1{%
+ \ifcase#1\or ι\or κ\or λ\or μ\or ν\or ξ\or ο\or π\or \koppa\fi
+ \ifnum#1=\z@\else\anw@true\fi\gr@num@i}
+\def\gr@num@iii#1{%
+ \ifcase#1\or ρ\or σ\or τ\or υ\or φ\or χ\or ψ\or ω\or \sampi\fi
+ \ifnum#1=\z@\anw@false\else\anw@true\fi\gr@num@ii}
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\gr@num@iv}
+% \begin{macro}{\gr@num@v}
+% \begin{macro}{\gr@num@vi}
+% The first three ``digits'' always have the numeric mark, except
+% when one is discarded because it's value is zero.
+% \begin{macrocode}
+\def\gr@num@iv#1{%
+ \ifnum#1=\z@\else\katwtonos\fi
+ \ifcase#1\or α\or β\or γ\or δ\or ε\or \stigma\or ζ\or η\or θ\fi
+ \gr@num@iii}
+\def\gr@num@v#1{%
+ \ifnum#1=\z@\else\katwtonos\fi
+ \ifcase#1\or ι\or κ\or λ\or μ\or ν\or ξ\or ο\or π\or \koppa\fi
+ \gr@num@iv}
+\def\gr@num@vi#1{%
+ \katwtonos
+ \ifcase#1\or ρ\or σ\or τ\or υ\or φ\or χ\or ψ\or ω\or \sampi\fi
+ \gr@num@v}
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \begin{macro}{\@Greeknumeral}
+% The command |\@Greeknumeral| prints uppercase Greek numerals.
+% The parsing is performed by the macro |\@greeknumeral|. The printing
+% of the NUMERAL SIGN depends on the value of |\numer@lsign|.
+% \begin{macrocode}
+\def\@Greeknumeral#1{%
+ \expandafter\MakeUppercase\expandafter{\@greeknumeral{#1}}}
+% \end{macrocode}
+% \end{macro}
+% \begin{macro}{\greeknumeral}
+% This command prints lowercase Greek numerals and the NUMERAL SIGN
+% is always printed.
+% \begin{macrocode}
+\def\greeknumeral#1{%
+ \let\@numer@lsign\numer@lsign%
+ \let\numer@lsign\anwtonos%
+ \@greeknumeral{#1}
+ \let\numer@lsign\@numer@lsign}
+% \end{macrocode}
+% \end{macro}
+% \begin{macro}{\Greeknumeral}
+% This command prints uppercase Greek numerals and the NUMERAL SIGN
+% is always printed.
+% \begin{macrocode}
+\def\Greeknumeral#1{%
+ \let\@numer@lsign\numer@lsign%
+ \let\numer@lsign\anwtonos%
+ \@Greeknumeral{#1}
+ \let\numer@lsign\@numer@lsign}
+% \end{macrocode}
+% \end{macro}
+%
+% The alphabetic numbering system is not the only numbering system employed by Greeks.
+% In fact, Greeks used various systems that are now known as {\em acrophonic} numbering
+% systems. Many scholars are familiar with the acrophonic Attic numbering system and the
+% the command |\atticnum| can be used to generate acrophonic Attic numerals.
+% The acrophonic Attic numbering system, like the Roman one, employs
+% letters to denote important numbers. Multiple occurrence of a letter denote
+% a multiple of the ``important'' number, e.g., the letter Ι denotes 1, so
+% ΙΙΙ denotes 3. Here are the basic digits used in the acrophonic Attic numbering
+% system:
+% \begin{itemize}
+% \item Ι denotes the number one (1)
+% \item Π denotes the number five (5)
+% \item Δ denotes the number ten (10)
+% \item Η denotes the number one hundred (100)
+% \item Χ denotes the number one thousand (1000)
+% \item Μ denotes the number ten thousands (10000)
+%\end{itemize}
+% Moreover, the letters Δ, Η, Χ, and Μ under the letter ^^^^^^010143 (a form of Π)
+% denote five times their original value. In particular, the symbol ^^^^^10144, denotes
+% the number 50, the symbol ^^^^^10145 denotes the number 500, the symbol ^^^^^10146
+% denotes the number 5000, and the symbol ^^^^^10147 denotes the number 50,000. It
+% must be noted that the numbering system does not provide negative numerals or a symbol for
+% zero.
+%\begin{macro}{\@@atticnum}
+% Now, let me definite the macro
+% |\@@atticnum|. This macro uses one integer variable (or counter in
+% \TeX's jargon.)
+% \begin{macrocode}
+\newcount\@attic@num
+% \end{macrocode}
+% The macro |\@@atticnum| is also defined as a robust command.
+% \begin{macrocode}
+\DeclareRobustCommand*{\@@atticnum}[1]{%
+% \end{macrocode}
+% After assigning to variable |\@attic@num| the value of the macro's argument,
+% we make sure that the argument is in the expected range, i.e., it is greater
+% than zero, and less or equal to $249999$. In case it isn't, it simply
+% produces a |\space|, warns the user about it and quits. Although, the
+% |\atticnum| macro is capable to produce an Athenian numeral for even greater
+% intergers, the following argument by Claudio Beccari convised me to place
+% this upper limit:
+% \begin{quote}
+% According to psychological perception studies (that ancient Athenians
+% and Romans perfectly knew without needing to study Freud and Jung)
+% living beings (which includes at least all vertebrates, not only
+% humans) can perceive up to four randomly set objects of the same kind
+% without the need of counting, the latter activity being a specific
+% acquired ability of human kind; the biquinary numbering notation
+% used by the Athenians and the Romans exploits this natural
+% characteristic of human beings.
+% \end{quote}
+% \begin{macrocode}
+ \@attic@num#1\relax
+ \ifnum\@attic@num<\@ne%
+ \space%
+ \PackageWarning{xgreek}{%
+ Illegal value (\the\@attic@num) for acrophonic
+ Attic numeral}%
+ \else\ifnum\@attic@num>249999%
+ \space%
+ \PackageWarning{xgreek}{%
+ Value too large (\the\@attic@num) for acrophonic
+ Attic numeral}%
+ \else
+% \end{macrocode}
+% Having done all the necessary checks, it is possible to proceed with the actual
+% computation. If the number is greater than $49999$, then it certainly
+% has at least one ^^^^^10147 ``digit''. The macro finds all such digits by continuously
+% subtracting $50000$ from |\@attic@num|, until |\@attic@num| becomes less than
+% $50000$.
+% \begin{macrocode}
+ \@whilenum\@attic@num>49999\do{%
+ ^^^^^^010147\advance\@attic@num-50000}%
+% \end{macrocode}
+% Next the macro checks for tens of thousands.
+% \begin{macrocode}
+ \@whilenum\@attic@num>9999\do{%
+ M\advance\@attic@num-\@M}%
+% \end{macrocode}
+% Since a number can have only one ^^^^^10146 ``digit'' (equivalent to 5000), it
+% is easy to check whether is should have one and produce the corresponding numeral when
+% it does have one.
+% \begin{macrocode}
+ \ifnum\@attic@num>4999%
+ ^^^^^^010146\advance\@attic@num-5000%
+ \fi\relax
+% \end{macrocode}
+% The macro should also check for thousands, the same way it checked for tens of thousands.
+% \begin{macrocode}
+ \@whilenum\@attic@num>999\do{%
+ Χ\advance\@attic@num-\@m}%
+% \end{macrocode}
+% Since a numeral can have at most one ^^^^^10145 ``digit'' (equivalent to 500), this should be
+% handled the way the macro handled the case of the five thousands ``digit''.
+% \begin{macrocode}
+ \ifnum\@attic@num>499%
+ ^^^^^^010145\advance\@attic@num-500%
+ \fi\relax
+% \end{macrocode}
+% It is time to check hundreds, which follow the same pattern as thousands.
+% \begin{macrocode}
+ \@whilenum\@attic@num>99\do{%
+ Η\advance\@attic@num-100}%
+% \end{macrocode}
+% A numeral can have only one ^^^^^10144 ``digit'' (equivalent to 50).
+% \begin{macrocode}
+ \ifnum\@attic@num>49%
+ ^^^^^^010144\advance\@attic@num-50%
+ \fi\relax
+% \end{macrocode}
+% The macro now checks now for tens digit.
+% \begin{macrocode}
+ \@whilenum\@attic@num>9\do{%
+ Δ\advance\@attic@num by-10}%
+% \end{macrocode}
+% Finally, it has to check for fives and the digits 1, 2, 3, and 4.
+% \begin{macrocode}
+ \@whilenum\@attic@num>4\do{%
+ Π\advance\@attic@num-5}%
+ \ifcase\@attic@num\or Ι\or ΙΙ\or ΙΙΙ\or ΙΙΙΙ\fi%
+ \fi\fi}
+% \end{macrocode}
+%\end{macro}
+%
+%\begin{macro}{\@atticnum}
+% The command |\@atticnum| has one argument, which
+% is a counter. It calls the command |\@@atticnum| to process the value of
+% the counter.
+% \begin{macrocode}
+\def\@atticnum#1{%
+ \expandafter\@@atticnum\expandafter{\the#1}}
+% \end{macrocode}
+%\end{macro}
+%\begin{macro}{\atticnum}
+% The command |\atticnum| is a wrapper that declares
+% a new counter in a local scope, assigns to it the value of the argument of the command
+% and calls the macro |\@atticnum|. This way the command can process correctly
+% either a number or a counter.
+% \begin{macrocode}
+\def\atticnum#1{%
+ \@attic@num#1\relax
+ \@atticnum{\@attic@num}}
+% \end{macrocode}
+%\end{macro}
+%
+% \begin{macro}{\greek@alph}
+% \begin{macro}{\greek@Alph}
+% Here I redefine the macros |\@alph| and |\@Alph|. First, I define some placeholders
+% \begin{macrocode}
+\let\latin@alph\@alph
+\let\latin@Alph\@Alph
+% \end{macrocode}
+% Then I define the Greek versions; the additional |\expandafter|s
+% are needed in order to make sure the table of contents will be
+% correct (e.g., when there are appendices).
+% \begin{macrocode}
+\def\greek@alph#1{\expandafter\@greeknumeral\expandafter{\the#1}}
+\def\greek@Alph#1{\expandafter\@Greeknumeral\expandafter{\the#1}}
+% \end{macrocode}
+% By default Greek alphabetic enumerals instaed of Latin numerals are used to enumerate items in an
+% enumeration environment.
+% \begin{macrocode}
+ \let\@alph\greek@alph
+ \let\@Alph\greek@Alph
+% \end{macrocode}
+% If for some reason, one needs to have the Latin numerals back, then she has to invoke command
+% |\nogreekalph|. And if she wants to switch back, then she has to use the |\greekalph|
+% command:
+% \begin{macrocode}
+\def\nogreekalph{%
+ \let\@alph\latin@alph
+ \let\@Alph\latin@Alph}
+\def\greekalph{%
+ \let\@alph\greek@alph
+ \let\@Alph\greek@Alph}
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\setlanguage}
+% We provide the |\setlanguage| command which
+% activates the hypehnation patterns of some other language. It is similar
+% to babel's |\selectlanguage|, but we opted to use a new name to avoid possible name conflicts.
+% Valid arguments include |monogreek|, |polygreek|, |ancientgreek|, and |american|. As was noted
+% previously, package \textsf{luahyphenrules} provides the command |\HyphenRules| which has exactly
+% the same functionality as this command. So when using Lua\LaTeX\ users will actually use the
+% |\HyphenRules| command.
+% \begin{macrocode}
+\ifx\directlua\undefined%
+ \def\setlanguage#1{%
+ \expandafter\ifx\csname l@#1\endcsname\relax%
+ \typeout{^^J Error: No hyphenation pattern for}%
+ \typeout{ language #1 are loaded,}%
+ \typeout{ default hyphenation patterns are used.^^J}%
+ \language=0%
+ \else\language=\csname l@#1\endcsname\fi}
+\else
+ \let\setlanguage\HyphenRules
+\fi
+% \end{macrocode}
+% \end{macro}
+% The macros |\grtoday| and |\Grtoday| produces the current date, only that the
+% month and the day are shown as greek numerals instead of arabic
+% as it is usually the case. In addition, the two commands differ in that the
+% later produces the Greek numerals in uppercase.
+% \begin{macrocode}
+\def\grtoday{%
+ \expandafter\greeknumeral\expandafter{\the\day}\space
+ \gr@c@month\space
+ \expandafter\greeknumeral\expandafter{\the\year}}
+\def\Grtoday{%
+ \expandafter\Greeknumeral\expandafter{\the\day}\space
+ \gr@c@month\space
+ \expandafter\Greeknumeral\expandafter{\the\year}}
+%</xgreek>
+% \end{macrocode}
+% \section{The Source Code of \textsf{xelistings}}
+%
+% If the user has enabled the |listings| option, then the package loads the rudimentary package
+% \textsf{xelistings}. This package loads the \textsf{listings} package and makes accessible to
+% it all characters in the range 128--255 plus all Greek letters that belong to the
+% Greek and Coptic Unicode block. This is achieved by redefining the command |\lst@DefEC|.
+% \begin{macrocode}
+%<*xelistings>
+\RequirePackage{listings}
+\lstset{inputencoding=utf8}
+\lst@InputCatcodes
+\gdef\lst@DefEC{%
+ \lst@CCECUse \lst@ProcessLetter
+ ^^80^^81^^82^^83^^84^^85^^86^^87^^88^^89^^8a^^8b^^8c^^8d^^8e^^8f%
+ ^^90^^91^^92^^93^^94^^95^^96^^97^^98^^99^^9a^^9b^^9c^^9d^^9e^^9f%
+ ^^a0^^a1^^a2^^a3^^a4^^a5^^a6^^a7^^a8^^a9^^aa^^ab^^ac^^ad^^ae^^af%
+ ^^b0^^b1^^b2^^b3^^b4^^b5^^b6^^b7^^b8^^b9^^ba^^bb^^bc^^bd^^be^^bf%
+ ^^c0^^c1^^c2^^c3^^c4^^c5^^c6^^c7^^c8^^c9^^ca^^cb^^cc^^cd^^ce^^cf%
+ ^^d0^^d1^^d2^^d3^^d4^^d5^^d6^^d7^^d8^^d9^^da^^db^^dc^^dd^^de^^df%
+ ^^e0^^e1^^e2^^e3^^e4^^e5^^e6^^e7^^e8^^e9^^ea^^eb^^ec^^ed^^ee^^ef%
+ ^^f0^^f1^^f2^^f3^^f4^^f5^^f6^^f7^^f8^^f9^^fa^^fb^^fc^^fd^^fe^^ff%
+ ^^^^0396^^^^0388^^^^0389^^^^038a^^^^038c% <--- Begin of Greek Letters
+ ^^^^038e^^^^038f^^^^0390^^^^0391^^^^0392%
+ ^^^^0393^^^^0394^^^^0395^^^^0396^^^^0397%
+ ^^^^0398^^^^0399^^^^039a^^^^039b^^^^039c%
+ ^^^^039d^^^^039e^^^^039f^^^^03a0^^^^03a1%
+ ^^^^03a3^^^^03a4^^^^03a5^^^^03a6^^^^03a7%
+ ^^^^03a8^^^^03a9^^^^03aa^^^^03ab^^^^03ac%
+ ^^^^03ad^^^^03ae^^^^03af^^^^03b0^^^^03b1%
+ ^^^^03b2^^^^03b3^^^^03b4^^^^03b5^^^^03b6%
+ ^^^^03b7^^^^03b8^^^^03b9^^^^03ba^^^^03bb%
+ ^^^^03bc^^^^03bd^^^^03be^^^^03bf^^^^03c0%
+ ^^^^03c1^^^^03c2^^^^03c3^^^^03c4^^^^03c5%
+ ^^^^03c6^^^^03c7^^^^03c8^^^^03c9^^^^03ca%
+ ^^^^03cb^^^^03cc^^^^03cd^^^^03ce% <--- End of Greek Letters
+ ^^00}%
+\lst@RestoreCatcodes
+%</xelistings>
+% \end{macrocode}
+% \Finale