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<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta charset="utf-8" />
<meta name="generator" content="Docutils 0.20.2b.dev: https://docutils.sourceforge.io/" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<meta name="dcterms.rights" content="© 2013 – 2023 Günter Milde" />
<title>greek-fontenc.def</title>
<link rel="schema.dcterms" href="http://purl.org/dc/terms/"/>
<style type="text/css">

/* Minimal style sheet for the HTML output of Docutils.                    */
/*                                                                         */
/* :Author: Günter Milde, based on html4css1.css by David Goodger          */
/* :Id: $Id$                                                               */
/* :Copyright: © 2015, 2021 Günter Milde.                                  */
/* :License: Released under the terms of the `2-Clause BSD license`_,      */
/*    in short:                                                            */
/*                                                                         */
/*    Copying and distribution of this file, with or without modification, */
/*    are permitted in any medium without royalty provided the copyright   */
/*    notice and this notice are preserved.                                */
/*                                                                         */
/*    This file is offered as-is, without any warranty.                    */
/*                                                                         */
/* .. _2-Clause BSD license: http://www.spdx.org/licenses/BSD-2-Clause     */

/* This CSS3 stylesheet defines rules for Docutils elements without        */
/* HTML equivalent. It is required to make the document semantics visible. */
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p img, p video, figure img, figure video {
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</style>
<style type="text/css">

/* CSS3_ style sheet for the output of Docutils HTML5 writer.  */
/* Generic responsive design for all screen sizes.                         */
/*                                                                         */
/* :Author: Günter Milde                                                   */
/*                                                                         */
/* :Id: $Id$                                                               */
/* :Copyright: © 2021 Günter Milde.                                        */
/* :License: Released under the terms of the `2-Clause BSD license`_,      */
/*    in short:                                                            */
/*                                                                         */
/*    Copying and distribution of this file, with or without modification, */
/*    are permitted in any medium without royalty provided the copyright   */
/*    notice and this notice are preserved.                                */
/*                                                                         */
/*    This file is offered as-is, without any warranty.                    */
/*                                                                         */
/* .. _2-Clause BSD license: http://www.spdx.org/licenses/BSD-2-Clause     */
/* .. _CSS3: https://www.w3.org/Style/CSS/                                 */

/* Note:                                                                   */
/* This style sheet is provisional:                                        */
/* the API is not settled and may change with any minor Docutils version.  */



/* General Settings */
/* ================ */


* { box-sizing: border-box; }

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sup, sub { /* avoid additional inter-line space for lines with sup/sub */
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/* ============== */

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<body class="with-toc">
<main id="greek-fontenc-def">
<h1 class="title">greek-fontenc.def</h1>
<p class="subtitle" id="common-greek-font-encoding-definitions">Common Greek font encoding definitions</p>
<dl class="docinfo">
<dt class="version">Version<span class="colon">:</span></dt>
<dd class="version">2.3 (<a class="reference internal" href="#changelog">changelog</a>)</dd>
<dt class="copyright">Copyright<span class="colon">:</span></dt>
<dd class="copyright">© 2013 – 2023 Günter Milde</dd>
<dt class="licence">Licence<span class="colon">:</span></dt>
<dd class="licence"><p>This work may be distributed and/or modified under the
conditions of the <a class="reference external" href="http://www.latex-project.org/lppl.txt">LaTeX Project Public License</a>, either
version 1.3 of this license or any later version.</p>
</dd>
</dl>
<div class="topic abstract" role="doc-abstract">
<p class="topic-title">Abstract</p>
<p>This file provides definitions that are shared between
font encodings providing Greek characters.</p>
</div>
<nav class="contents" id="contents" role="doc-toc">
<p class="topic-title">Contents</p>
<ul class="simple">
<li><p><a class="reference internal" href="#usage" id="toc-entry-1">Usage</a></p></li>
<li><p><a class="reference internal" href="#implementation" id="toc-entry-2">Implementation</a></p>
<ul>
<li><p><a class="reference internal" href="#identification" id="toc-entry-3">Identification</a></p></li>
<li><p><a class="reference internal" href="#ensuregreek-greekscript" id="toc-entry-4">ensuregreek, greekscript</a></p></li>
<li><p><a class="reference internal" href="#aliases" id="toc-entry-5">Aliases</a></p></li>
<li><p><a class="reference internal" href="#composite-diacritics" id="toc-entry-6">Composite diacritics</a></p></li>
<li><p><a class="reference internal" href="#case-changing" id="toc-entry-7">Case changing</a></p>
<ul>
<li><p><a class="reference internal" href="#uclclist-extension" id="toc-entry-8">&#64;uclclist extension</a></p></li>
<li><p><a class="reference internal" href="#substitution-macros" id="toc-entry-9">Substitution macros</a></p></li>
<li><p><a class="reference internal" href="#mark-hiatus" id="toc-entry-10">Mark hiatus</a></p></li>
</ul>
</li>
</ul>
</li>
<li><p><a class="reference internal" href="#changelog" id="toc-entry-11">Changelog</a></p></li>
<li><p><a class="reference internal" href="#references" id="toc-entry-12">References</a></p></li>
</ul>
</nav>
<section id="usage">
<h2><a class="toc-backref" href="#toc-entry-1" role="doc-backlink">Usage</a></h2>
<p>This file is input by the font encoding definition files <a class="reference external" href="lgrenc.def.html">lgrenc.def</a>. and
<a class="reference external" href="tuenc-greek.def.html">tuenc-greek.def</a>.</p>
</section>
<section id="implementation">
<h2><a class="toc-backref" href="#toc-entry-2" role="doc-backlink">Implementation</a></h2>
<section id="identification">
<h3><a class="toc-backref" href="#toc-entry-3" role="doc-backlink">Identification</a></h3>
<pre class="literal-block">\ProvidesFile{greek-fontenc.def}
  [2023-06-01 2.3 Common Greek font encoding definitions]</pre>
</section>
<section id="ensuregreek-greekscript">
<h3><a class="toc-backref" href="#toc-entry-4" role="doc-backlink">ensuregreek, greekscript</a></h3>
<p>Provide “empty” encoding-specific definitions for <span class="docutils literal">\ensuregreek</span> and
<span class="docutils literal">\greekscript</span>. The definitions in this file make the font encoding fit
for use with the Greek script. (See <span class="docutils literal">textalpha.sty</span> for default
definitions.)</p>
<p>The <span class="docutils literal">\ensuregreek</span> macro can be used to ensure that its argument is set
in a font encoding with support for Greek. If the active font encoding
supports it, kerning between adjacent command calls (e.g.
<span class="docutils literal"><span class="pre">\ensuregreek{A}\ensuregreek{\Upsilon}</span></span>) is preserved. This allows, e.g.,
wrapping of compound Unicode character definitions.</p>
<pre class="literal-block">\ProvideTextCommand{\ensuregreek}{\LastDeclaredEncoding}{\&#64;firstofone}</pre>
<p>The <span class="docutils literal">\greekscript</span> declaration switches to a font encoding supporting
the Greek script, if required. The following definition announces the
<span class="docutils literal">\LastDeclaredEncoding</span> as Greek-supporting:</p>
<pre class="literal-block">\ProvideTextCommand{\greekscript}{\LastDeclaredEncoding}{}</pre>
</section>
<section id="aliases">
<h3><a class="toc-backref" href="#toc-entry-5" role="doc-backlink">Aliases</a></h3>
<p>Aliases are defined via <cite>DeclareTextCommand</cite> so that up/downcasing works
without the need for additional <a class="reference internal" href="#uclclist">uclclist</a> entries.</p>
<p>Names matching mathematical variant symbols:</p>
<pre class="literal-block">% \var... matching GREEK ... SYMBOL
\DeclareTextCommand{\textvarbeta}{\LastDeclaredEncoding}{\textbetasymbol}   % ϐ
\DeclareTextCommand{\textvarkappa}{\LastDeclaredEncoding}{\textkappasymbol} % ϰ
\DeclareTextCommand{\textvarTheta}{\LastDeclaredEncoding}{\textThetasymbol} % ϴ
\DeclareTextCommand{\textvartheta}{\LastDeclaredEncoding}{\textthetasymbol} % ϑ
\DeclareTextCommand{\textvarpi}{\LastDeclaredEncoding}{\textpisymbol}       % ϖ
\DeclareTextCommand{\textvarrho}{\LastDeclaredEncoding}{\textrhosymbol}     % ϱ
% \var... matching GREEK LETTER ...
\DeclareTextCommand{\textvarepsilon}{\LastDeclaredEncoding}{\textepsilon}   % ε
\DeclareTextCommand{\textvarphi}{\LastDeclaredEncoding}{\textphi}           % φ
\DeclareTextCommand{\textvarsigma}{\LastDeclaredEncoding}{\textfinalsigma}  % ς</pre>
<p>Compatibility aliases for <a class="reference external" href="https://ctan.org/pkg/hyperref">hyperref</a>’s puenc.def:</p>
<pre class="literal-block">\DeclareTextCommand{\textnumeralsigngreek}{\LastDeclaredEncoding}{\textdexiakeraia}
\DeclareTextCommand{\textnumeralsignlowergreek}{\LastDeclaredEncoding}{\textaristerikeraia}

\DeclareTextCommand{\textmugreek}{\LastDeclaredEncoding}{\textmu}
\DeclareTextCommand{\textStigmagreek}{\LastDeclaredEncoding}{\textStigma}
\DeclareTextCommand{\textstigmagreek}{\LastDeclaredEncoding}{\textstigma}
\DeclareTextCommand{\textDigammagreek}{\LastDeclaredEncoding}{\textDigamma}
\DeclareTextCommand{\textdigammagreek}{\LastDeclaredEncoding}{\textdigamma}
\DeclareTextCommand{\textKoppagreek}{\LastDeclaredEncoding}{\textKoppa}
\DeclareTextCommand{\textkoppagreek}{\LastDeclaredEncoding}{\textkoppa}
\DeclareTextCommand{\textSampigreek}{\LastDeclaredEncoding}{\textSampi}
\DeclareTextCommand{\textsampigreek}{\LastDeclaredEncoding}{\textsampi}</pre>
<p>Names from <a class="reference external" href="https://ctan.org/pkg/babel">babel</a> and <a class="reference external" href="https://ctan.org/pkg/teubner">teubner</a> (do we want to define them here as alias?)</p>
<pre class="code latex literal-block"><code><span class="keyword">\DeclareTextCommand</span><span class="name builtin">{</span><span class="keyword">\anwtonos</span><span class="name builtin">}{</span><span class="keyword">\LastDeclaredEncoding</span><span class="name builtin">}{</span><span class="keyword">\textdexiakeraia</span><span class="name builtin">}</span>     <span class="comment">% ʹ
</span><span class="keyword">\DeclareTextCommand</span><span class="name builtin">{</span><span class="keyword">\katwtonos</span><span class="name builtin">}{</span><span class="keyword">\LastDeclaredEncoding</span><span class="name builtin">}{</span><span class="keyword">\textaristerikeraia</span><span class="name builtin">}</span> <span class="comment">% ͵</span></code></pre>
<p>Two Unicode code points and names for one character:</p>
<pre class="literal-block">\DeclareTextCommand{\accoxia}{\LastDeclaredEncoding}{\acctonos}
\DeclareTextCommand{\accdialytikaoxia}{\LastDeclaredEncoding}{\accdialyikatonos}
\DeclareTextCommand{\acckoronis}{\LastDeclaredEncoding}{\accpsili}</pre>
<p>Symbol macros for the breathings:</p>
<p>Moved to <span class="docutils literal">textalpha.sty</span> to avoid clashes with local definitions
of <span class="docutils literal">\&lt;</span> and <span class="docutils literal">\&gt;</span> in documents using LGR or babel-greek.
(Bugreport David Kastrup). If you want to use the short macros without
loading <cite>textalpha</cite>, you can define them in the document preamble like</p>
<pre class="code latex literal-block"><code><span class="keyword">\DeclareTextCommand</span><span class="name builtin">{</span><span class="keyword">\&lt;</span><span class="name builtin">}{</span>LGR<span class="name builtin">}{</span><span class="keyword">\accdasia</span><span class="name builtin">}</span>
<span class="keyword">\DeclareTextCommand</span><span class="name builtin">{</span><span class="keyword">\&gt;</span><span class="name builtin">}{</span>LGR<span class="name builtin">}{</span><span class="keyword">\accpsili</span><span class="name builtin">}</span>
<span class="keyword">\DeclareTextCompositeCommand</span><span class="name builtin">{</span><span class="keyword">\&gt;</span><span class="name builtin">}{</span>LGR<span class="name builtin">}{</span>'<span class="name builtin">}{</span><span class="keyword">\accpsilioxia</span><span class="name builtin">}</span>
<span class="keyword">\DeclareTextCompositeCommand</span><span class="name builtin">{</span><span class="keyword">\&gt;</span><span class="name builtin">}{</span>LGR<span class="name builtin">}{</span>`<span class="name builtin">}{</span><span class="keyword">\accpsilivaria</span><span class="name builtin">}</span>
<span class="keyword">\DeclareTextCompositeCommand</span><span class="name builtin">{</span><span class="keyword">\&gt;</span><span class="name builtin">}{</span>LGR<span class="name builtin">}{</span>~<span class="name builtin">}{</span><span class="keyword">\accpsiliperispomeni</span><span class="name builtin">}</span>
<span class="keyword">\DeclareTextCompositeCommand</span><span class="name builtin">{</span><span class="keyword">\&lt;</span><span class="name builtin">}{</span>LGR<span class="name builtin">}{</span>'<span class="name builtin">}{</span><span class="keyword">\accdasiaoxia</span><span class="name builtin">}</span>
<span class="keyword">\DeclareTextCompositeCommand</span><span class="name builtin">{</span><span class="keyword">\&lt;</span><span class="name builtin">}{</span>LGR<span class="name builtin">}{</span>`<span class="name builtin">}{</span><span class="keyword">\accdasiavaria</span><span class="name builtin">}</span>
<span class="keyword">\DeclareTextCompositeCommand</span><span class="name builtin">{</span><span class="keyword">\&lt;</span><span class="name builtin">}{</span>LGR<span class="name builtin">}{</span>~<span class="name builtin">}{</span><span class="keyword">\accdasiaperispomeni</span><span class="name builtin">}</span></code></pre>
<p>Or use alternative symbols for the breathings (cf. X compose
table, LCI encoding)?</p>
<pre class="code latex literal-block"><code><span class="keyword">\DeclareTextCommand</span><span class="name builtin">{</span><span class="literal string">\(</span><span class="name builtin">}{</span><span class="name variable">\LastDeclaredEncoding</span><span class="name builtin">}{</span><span class="name variable">\accdasia</span><span class="name builtin">}
</span><span class="name variable">\DeclareTextCommand</span><span class="name builtin">{</span><span class="literal string">\)</span><span class="name builtin">}{</span><span class="keyword">\LastDeclaredEncoding</span><span class="name builtin">}{</span><span class="keyword">\accpsili</span><span class="name builtin">}</span></code></pre>
</section>
<section id="composite-diacritics">
<h3><a class="toc-backref" href="#toc-entry-6" role="doc-backlink">Composite diacritics</a></h3>
<p>Composite accents can be input as sequence of simple diacritics (in
arbitrary order) via named macro, symbol macro and “transliteration
characters”, e.g. one of</p>
<pre class="code latex literal-block"><code><span class="keyword">\accdialyticavaria\textalpha</span>,
<span class="keyword">\accdialytica\accvaria\textalpha</span>,
<span class="keyword">\&quot;\'\textalpha</span>,
<span class="keyword">\&quot;</span>'<span class="keyword">\textalpha</span>, or
<span class="keyword">\'</span>&quot;<span class="keyword">\textalpha</span>.</code></pre>
<p>Separate definitions for the supported variants of the second input token
are required as composition is based on the non-expanded input</p>
<p>The composition with simple “transliteration characters” must also be defined
for the symbol macros, otherwise it fails with <span class="docutils literal">\Makeuppercase</span>.</p>
<p>For Unicode encodings (where they do not resolve to Greek named macros),
composite definitions starting with standard macros are requried:</p>
<pre class="literal-block">\DeclareTextCompositeCommand{\accdialytika}{\LastDeclaredEncoding}{\acctonos}{\accdialytikatonos}
\DeclareTextCompositeCommand{\accdialytika}{\LastDeclaredEncoding}{\accoxia}{\accdialytikatonos}
\DeclareTextCompositeCommand{\accdialytika}{\LastDeclaredEncoding}{\'}{\accdialytikatonos}
\DeclareTextCompositeCommand{\accdialytika}{\LastDeclaredEncoding}{'}{\accdialytikatonos}
\DeclareTextCompositeCommand{\&quot;}{\LastDeclaredEncoding}{\'}{\accdialytikatonos}
\DeclareTextCompositeCommand{\&quot;}{\LastDeclaredEncoding}{'}{\accdialytikatonos}
\DeclareTextCompositeCommand{\accdialytika}{\LastDeclaredEncoding}{\accvaria}{\accdialytikavaria}
\DeclareTextCompositeCommand{\accdialytika}{\LastDeclaredEncoding}{\`}{\accdialytikavaria}
\DeclareTextCompositeCommand{\accdialytika}{\LastDeclaredEncoding}{`}{\accdialytikavaria}
\DeclareTextCompositeCommand{\&quot;}{\LastDeclaredEncoding}{\`}{\accdialytikavaria}
\DeclareTextCompositeCommand{\&quot;}{\LastDeclaredEncoding}{`}{\accdialytikavaria}
\DeclareTextCompositeCommand{\accdialytika}{\LastDeclaredEncoding}{\accperispomeni}{\accdialytikaperispomeni}
\DeclareTextCompositeCommand{\accdialytika}{\LastDeclaredEncoding}{\~}{\accdialytikaperispomeni}
\DeclareTextCompositeCommand{\accdialytika}{\LastDeclaredEncoding}{~}{\accdialytikaperispomeni}
\DeclareTextCompositeCommand{\&quot;}{\LastDeclaredEncoding}{\~}{\accdialytikaperispomeni}
\DeclareTextCompositeCommand{\&quot;}{\LastDeclaredEncoding}{~}{\accdialytikaperispomeni}

\DeclareTextCompositeCommand{\acctonos}{\LastDeclaredEncoding}{\accdialytika}{\accdialytikatonos}
\DeclareTextCompositeCommand{\acctonos}{\LastDeclaredEncoding}{\&quot;}{\accdialytikatonos}
\DeclareTextCompositeCommand{\acctonos}{\LastDeclaredEncoding}{&quot;}{\accdialytikatonos}
\DeclareTextCompositeCommand{\'}{\LastDeclaredEncoding}{\&quot;}{\accdialytikatonos}
\DeclareTextCompositeCommand{\'}{\LastDeclaredEncoding}{&quot;}{\accdialytikatonos}
\DeclareTextCompositeCommand{\acctonos}{\LastDeclaredEncoding}{\accdasia}{\accdasiaoxia}
\DeclareTextCompositeCommand{\acctonos}{\LastDeclaredEncoding}{\&lt;}{\accdasiaoxia}
\DeclareTextCompositeCommand{\acctonos}{\LastDeclaredEncoding}{&lt;}{\accdasiaoxia}
\DeclareTextCompositeCommand{\'}{\LastDeclaredEncoding}{\&lt;}{\accdasiaoxia}
\DeclareTextCompositeCommand{\'}{\LastDeclaredEncoding}{&lt;}{\accdasiaoxia}
\DeclareTextCompositeCommand{\acctonos}{\LastDeclaredEncoding}{\accpsili}{\accpsilioxia}
\DeclareTextCompositeCommand{\acctonos}{\LastDeclaredEncoding}{\&gt;}{\accpsilioxia}
\DeclareTextCompositeCommand{\acctonos}{\LastDeclaredEncoding}{&gt;}{\accpsilioxia}
\DeclareTextCompositeCommand{\'}{\LastDeclaredEncoding}{\&gt;}{\accpsilioxia}
\DeclareTextCompositeCommand{\'}{\LastDeclaredEncoding}{&gt;}{\accpsilioxia}
\DeclareTextCompositeCommand{\'}{\LastDeclaredEncoding}{\'}{\textquoteright}
\DeclareTextCompositeCommand{\'}{\LastDeclaredEncoding}{'}{\textquoteright}

\DeclareTextCompositeCommand{\accvaria}{\LastDeclaredEncoding}{\accdialytika}{\accdialytikavaria}
\DeclareTextCompositeCommand{\accvaria}{\LastDeclaredEncoding}{\&quot;}{\accdialytikavaria}
\DeclareTextCompositeCommand{\accvaria}{\LastDeclaredEncoding}{&quot;}{\accdialytikavaria}
\DeclareTextCompositeCommand{\`}{\LastDeclaredEncoding}{\&quot;}{\accdialytikavaria}
\DeclareTextCompositeCommand{\`}{\LastDeclaredEncoding}{&quot;}{\accdialytikavaria}
\DeclareTextCompositeCommand{\accvaria}{\LastDeclaredEncoding}{\accdasia}{\accdasiavaria}
\DeclareTextCompositeCommand{\accvaria}{\LastDeclaredEncoding}{\&lt;}{\accdasiavaria}
\DeclareTextCompositeCommand{\accvaria}{\LastDeclaredEncoding}{&lt;}{\accdasiavaria}
\DeclareTextCompositeCommand{\`}{\LastDeclaredEncoding}{\&lt;}{\accdasiavaria}
\DeclareTextCompositeCommand{\`}{\LastDeclaredEncoding}{&lt;}{\accdasiavaria}
\DeclareTextCompositeCommand{\accvaria}{\LastDeclaredEncoding}{\accpsili}{\accpsilivaria}
\DeclareTextCompositeCommand{\accvaria}{\LastDeclaredEncoding}{\&gt;}{\accpsilivaria}
\DeclareTextCompositeCommand{\accvaria}{\LastDeclaredEncoding}{&gt;}{\accpsilivaria}
\DeclareTextCompositeCommand{\`}{\LastDeclaredEncoding}{\&gt;}{\accpsilivaria}
\DeclareTextCompositeCommand{\`}{\LastDeclaredEncoding}{&gt;}{\accpsilivaria}
\DeclareTextCompositeCommand{\`}{\LastDeclaredEncoding}{\`}{\textquoteleft}
\DeclareTextCompositeCommand{\`}{\LastDeclaredEncoding}{`}{\textquoteleft}

\DeclareTextCompositeCommand{\accperispomeni}{\LastDeclaredEncoding}{\accdialytika}{\accdialytikaperispomeni}
\DeclareTextCompositeCommand{\accperispomeni}{\LastDeclaredEncoding}{\&quot;}{\accdialytikaperispomeni}
\DeclareTextCompositeCommand{\accperispomeni}{\LastDeclaredEncoding}{&quot;}{\accdialytikaperispomeni}
\DeclareTextCompositeCommand{\~}{\LastDeclaredEncoding}{\&quot;}{\accdialytikaperispomeni}
\DeclareTextCompositeCommand{\~}{\LastDeclaredEncoding}{&quot;}{\accdialytikaperispomeni}
\DeclareTextCompositeCommand{\accperispomeni}{\LastDeclaredEncoding}{\accdasia}{\accdasiaperispomeni}
\DeclareTextCompositeCommand{\accperispomeni}{\LastDeclaredEncoding}{\&lt;}{\accdasiaperispomeni}
\DeclareTextCompositeCommand{\accperispomeni}{\LastDeclaredEncoding}{&lt;}{\accdasiaperispomeni}
\DeclareTextCompositeCommand{\~}{\LastDeclaredEncoding}{\&lt;}{\accdasiaperispomeni}
\DeclareTextCompositeCommand{\~}{\LastDeclaredEncoding}{&lt;}{\accdasiaperispomeni}
\DeclareTextCompositeCommand{\accperispomeni}{\LastDeclaredEncoding}{\accpsili}{\accpsiliperispomeni}
\DeclareTextCompositeCommand{\accperispomeni}{\LastDeclaredEncoding}{\&gt;}{\accpsiliperispomeni}
\DeclareTextCompositeCommand{\accperispomeni}{\LastDeclaredEncoding}{&gt;}{\accpsiliperispomeni}
\DeclareTextCompositeCommand{\~}{\LastDeclaredEncoding}{\&gt;}{\accpsiliperispomeni}
\DeclareTextCompositeCommand{\~}{\LastDeclaredEncoding}{&gt;}{\accpsiliperispomeni}

\DeclareTextCompositeCommand{\accpsili}{\LastDeclaredEncoding}{\acctonos}{\accpsilioxia}
\DeclareTextCompositeCommand{\accpsili}{\LastDeclaredEncoding}{\accoxia}{\accpsilioxia}
\DeclareTextCompositeCommand{\accpsili}{\LastDeclaredEncoding}{\'}{\accpsilioxia}
\DeclareTextCompositeCommand{\accpsili}{\LastDeclaredEncoding}{'}{\accpsilioxia}
\DeclareTextCompositeCommand{\accpsili}{\LastDeclaredEncoding}{\accvaria}{\accpsilivaria}
\DeclareTextCompositeCommand{\accpsili}{\LastDeclaredEncoding}{\`}{\accpsilivaria}
\DeclareTextCompositeCommand{\accpsili}{\LastDeclaredEncoding}{`}{\accpsilivaria}
\DeclareTextCompositeCommand{\accpsili}{\LastDeclaredEncoding}{\accperispomeni}{\accpsiliperispomeni}
\DeclareTextCompositeCommand{\accpsili}{\LastDeclaredEncoding}{\~}{\accpsiliperispomeni}
\DeclareTextCompositeCommand{\accpsili}{\LastDeclaredEncoding}{~}{\accpsiliperispomeni}

\DeclareTextCompositeCommand{\accdasia}{\LastDeclaredEncoding}{\acctonos}{\accdasiaoxia}
\DeclareTextCompositeCommand{\accdasia}{\LastDeclaredEncoding}{\accoxia}{\accdasiaoxia}
\DeclareTextCompositeCommand{\accdasia}{\LastDeclaredEncoding}{\'}{\accdasiaoxia}
\DeclareTextCompositeCommand{\accdasia}{\LastDeclaredEncoding}{'}{\accdasiaoxia}
\DeclareTextCompositeCommand{\accdasia}{\LastDeclaredEncoding}{\accvaria}{\accdasiavaria}
\DeclareTextCompositeCommand{\accdasia}{\LastDeclaredEncoding}{\`}{\accdasiavaria}
\DeclareTextCompositeCommand{\accdasia}{\LastDeclaredEncoding}{`}{\accdasiavaria}
\DeclareTextCompositeCommand{\accdasia}{\LastDeclaredEncoding}{\accperispomeni}{\accdasiaperispomeni}
\DeclareTextCompositeCommand{\accdasia}{\LastDeclaredEncoding}{\~}{\accdasiaperispomeni}</pre>
</section>
<section id="case-changing">
<span id="uclclist"></span><h3><a class="toc-backref" href="#toc-entry-7" role="doc-backlink">Case changing</a></h3>
<p>UPPERCASE (all-caps) is generated with <span class="docutils literal">\MakeUppercase</span>. The
implementation of this command changed in June 2022 <a class="citation-reference" href="#ltnews35" id="citation-reference-1" role="doc-biblioref">[ltnews35]</a>.</p>
<p>According to Greek typographical tradition, diacritics (except dialytika)
are placed before capital letters in Titlecase and dropped in UPPERCASE.</p>
<p>Different conventions exist for the treatment of the <a class="reference external" href="https://en.wikipedia.org/wiki/Iota_subscript">mute iota</a> with
uppercase letters. The traditional typographic form and the most common
used in Greece is a subscript, corresponding to the COMBINING GREEK
YPOGEGRAMMENI (U+0345). Even if the pre-composed characters are named …
WITH [… AND] PROSGEGRAMMENI, capitalization should not use the GREEK
PROSGEGRAMMENI (U+1FBE) <a class="citation-reference" href="#nicholas-03" id="citation-reference-2" role="doc-biblioref">[Nicholas-03]</a>, <a class="citation-reference" href="#haralambous-98" id="citation-reference-3" role="doc-biblioref">[Haralambous-98]</a>.  Upper case
glyphs with adscript are a stylistic choice, provided by the font. In the
CB Fonts, a small capital adscript iota is used.</p>
<p>The “Latin” diacritics <em>macron</em> and <em>breve</em> are used to denote the
length of vowels. They are sometimes used in dictionaries and textbooks
but not part of the Greek orthography. There is no established rule
regarding their handling in uppercase. LaTeX used to keep them but
the <a class="reference external" href="https://icu.unicode.org/design/case/greek-upper">Unicode reference implementation</a> drops them.</p>
<p>Up to 2022/06, macro substitutions in the <span class="docutils literal">\&#64;uclclist</span> could be used to
get the expected behaviour:</p>
<section id="uclclist-extension">
<h4><a class="toc-backref" href="#toc-entry-8" role="doc-backlink">&#64;uclclist extension</a></h4>
<p>Based on Werner Lemberg’s 2008 <a class="reference external" href="http://www.eutypon.gr/eutypon/pdf/e2008-20/e20-a03.pdf">babel patch</a> and <span class="docutils literal">fontenc.sty</span>.</p>
<p>The definition of an auxiliary, self-resetting macro makes this idempotent
(only the first use of this function will expand the <span class="docutils literal">&#64;uclclist</span>).
The second and third lines are TeX’ way of writing <span class="docutils literal">uclclist += …</span></p>
<p>The <span class="docutils literal">\LGR&#64;…</span> auxiliary macros are defined below.</p>
<pre class="literal-block">\providecommand*\update&#64;uclc&#64;with&#64;greek{%
  \expandafter\def\expandafter\&#64;uclclist\expandafter{%
    \&#64;uclclist
    \accdasia\LGR&#64;accdropped
    \accdasiaoxia\LGR&#64;hiatus
    \accdasiavaria\LGR&#64;accdropped
    \accdasiaperispomeni\LGR&#64;accdropped
    \accpsili\LGR&#64;hiatus
    \accpsilioxia\LGR&#64;hiatus
    \accpsilivaria\LGR&#64;hiatus
    \accpsiliperispomeni\LGR&#64;accdropped
    \acctonos\LGR&#64;hiatus
    \accoxia\LGR&#64;hiatus
    \accvaria\LGR&#64;accdropped
    \accdialytikatonos\LGR&#64;accDialytika
    \accdialytikavaria\LGR&#64;accDialytika
    \accdialytikaperispomeni\LGR&#64;accDialytika
    \accperispomeni\LGR&#64;accdropped
    \LGR&#64;ypogegrammeni\prosgegrammeni
    \textalpha      \textAlpha
    \textbeta       \textBeta
    \textbetasymbol    \textBeta
    \textvarbeta       \textBeta
    \textgamma      \textGamma
    \textdelta      \textDelta
    \textepsilon    \textEpsilon
    \textepsilonsymbol \textEpsilon
    \textvarepsilon    \textEpsilon
    \textzeta       \textZeta
    \texteta        \textEta
    \texttheta      \textTheta
    \texttheta         \textThetasymbol
    \texttheta         \textvarTheta
    \textthetasymbol   \textTheta
    \textvartheta      \textTheta
    \textiota       \textIota
    \textkappa      \textKappa
    \textkappasymbol   \textKappa
    \textvarkappa      \textKappa
    \textlambda     \textLambda
    \textmu         \textMu
    \textnu         \textNu
    \textxi         \textXi
    \textomicron    \textOmicron
    \textpi         \textPi
    \textpisymbol   \textPi
    \textvarpi      \textPi
    \textrho        \textRho
    \textvarrho        \textRho
    \textrhosymbol     \textRho
    \textfinalsigma \textSigma
    \textsigma      \textSigma
    \textautosigma  \textSigma
    \texttau        \textTau
    \textupsilon    \textUpsilon
    \textphi        \textPhi
    \textphisymbol  \textPhi
    \textvarphi     \textPhi
    \textchi        \textChi
    \textpsi        \textPsi
    \textomega      \textOmega
    \textkoppa      \textKoppa
    \textqoppa      \textQoppa
    \textvarstigma  \LGR&#64;Stigma
    \textstigma     \textStigma
    \textsampi      \textSampi
    \textdigamma    \textDigamma
  }%
  \let\update&#64;uclc&#64;with&#64;greek\relax
}</pre>
<p>Expand the uclc list using the just defined macro:</p>
<pre class="literal-block">\update&#64;uclc&#64;with&#64;greek</pre>
</section>
<section id="substitution-macros">
<h4><a class="toc-backref" href="#toc-entry-9" role="doc-backlink">Substitution macros</a></h4>
<p>Drop diacritics (The argument passing ensures that kerning is preserved)</p>
<pre class="literal-block">\DeclareTextCommand{\LGR&#64;accdropped}{\LastDeclaredEncoding}[1]{#1}</pre>
<p>Keep dialytika: Define a dummy alias so that downcasing with
<span class="docutils literal">\MakeLowercase</span> does not convert a simple dialytika to a composite
accent:</p>
<pre class="literal-block">\DeclareTextCommand{\LGR&#64;accDialytika}{\LastDeclaredEncoding}{\accdialytika}
\DeclareTextCompositeCommand{\accdialytika}{\LastDeclaredEncoding}{\LGR&#64;hiatus}{\accdialytika}
\DeclareTextCompositeCommand{\accdialytika}{\LastDeclaredEncoding}{\LGR&#64;accdropped}{\accdialytika}</pre>
<p>The prosgegrammeni (adscript iota) is used only with capital letters.
We define a dummy macro to enable the conversion of <span class="docutils literal">\prosgegrammeni</span>
to <span class="docutils literal">\ypogegrammeni</span> (subscript iota) but not vice versa:</p>
<pre class="literal-block">\DeclareTextCommand{\LGR&#64;ypogegrammeni}{\LastDeclaredEncoding}{\ypogegrammeni}</pre>
<p>Prevent downcasing <span class="docutils literal">\textStigma</span> to the stigma variant <span class="docutils literal">\textvarstigma</span>
(only available in LGR). This happened sometimes with the post-2022/06
<span class="docutils literal">\MakeLowercase</span>:</p>
<pre class="literal-block">\DeclareTextCommand{\LGR&#64;Stigma}{\LastDeclaredEncoding}{\textStigma}</pre>
</section>
<section id="mark-hiatus">
<h4><a class="toc-backref" href="#toc-entry-10" role="doc-backlink">Mark hiatus</a></h4>
<p>Tonos and dasia mark a hiatus if placed on the
first vowel of a diphthong (ΑΙ, ΑΥ, ΕΙ). A dialytika must be placed on the
second vowel if they are dropped (άυλος → ΑΫΛΟΣ, μάινα → ΜΑΪΝΑ, κέικ → ΚΕΪΚ,
ἀυπνία → ΑΫΠΝΙΑ):</p>
<pre class="literal-block">\DeclareTextCommand{\LGR&#64;hiatus}{\LastDeclaredEncoding}[1]{#1}
\DeclareTextCompositeCommand{\LGR&#64;hiatus}{\LastDeclaredEncoding}{&gt;}{\LGR&#64;hiatus}
\DeclareTextCompositeCommand{\LGR&#64;hiatus}{\LastDeclaredEncoding}{&lt;}{\LGR&#64;accdropped}
\DeclareTextCompositeCommand{\LGR&#64;hiatus}{\LastDeclaredEncoding}{\textAlpha}{\LGR&#64;A&#64;hiatus}
\DeclareTextCompositeCommand{\LGR&#64;hiatus}{\LastDeclaredEncoding}{\textEpsilon}{\LGR&#64;E&#64;hiatus}</pre>
<p>The font encoding file must define the <span class="docutils literal">\LGR&#64;hiatus</span> TextCommand. See
<span class="docutils literal">lgrenc.def</span> for an example.</p>
<p>The following macro can be used to test if the next character is an Alpha or
Epsilon. As <span class="docutils literal">\&#64;ifnextchar</span> gobbles spaces the lookahead macro definition
from <span class="docutils literal">amsgen.sty</span> is used:</p>
<p>This macro is a variant of LaTeX’s <span class="docutils literal">\&#64;ifnextchar</span>, macro
that does not skip over spaces.</p>
<pre class="literal-block">\providecommand*{\LGR&#64;ifnextchar}[3]{%
  \let\reserved&#64;d= #1%
  \def\reserved&#64;a{#2}\def\reserved&#64;b{#3}%
  \futurelet\&#64;let&#64;token\LGR&#64;ifnch
}
\providecommand*{\LGR&#64;ifnch}{%
  \ifx\&#64;let&#64;token\reserved&#64;d \let\reserved&#64;b\reserved&#64;a \fi
  \reserved&#64;b
}</pre>
</section>
</section>
</section>
<section id="changelog">
<h2><a class="toc-backref" href="#toc-entry-11" role="doc-backlink">Changelog</a></h2>
<table class="borderless">
<tbody>
<tr><td><p>0.9</p></td>
<td><p>2013-07-03</p></td>
<td><p>code “outsourced” from lgrxenc.def</p></td>
</tr>
<tr><td><p>0.9.1</p></td>
<td><p>2013-07-17</p></td>
<td><p>composite definitions starting with standard accent cmds</p></td>
</tr>
<tr><td><p>0.11</p></td>
<td><p>2013-11-28</p></td>
<td><p><span class="docutils literal">\greekscript</span> TextCommand</p></td>
</tr>
<tr><td><p>0.12</p></td>
<td><p>2014-12-12</p></td>
<td><p>Remove symbol macros for breathing accents.</p></td>
</tr>
<tr><td><p>0.13</p></td>
<td><p>2015-08-04</p></td>
<td><p>No &#64;uclclist entry for ypogegrammeni/prosgegrammeni.</p></td>
</tr>
<tr><td><p>0.13.4</p></td>
<td><p>2019-07-10</p></td>
<td><p><span class="docutils literal">&#64;uclclist</span> entry for <span class="docutils literal">\prosgegrammeni</span>.</p></td>
</tr>
<tr><td><p>1.0</p></td>
<td><p>2020-09-25</p></td>
<td><p><span class="docutils literal">\textKoppagreek</span> and <span class="docutils literal">\textstigmagreek</span> aliases.</p></td>
</tr>
<tr><td><p>2.0</p></td>
<td><p>2020/10/30</p></td>
<td><p>Alias definitions matching mathematical variant symbols.</p></td>
</tr>
<tr><td><p>2.2</p></td>
<td><p>2023-02-28</p></td>
<td><p>Add missing accent composite commands.</p></td>
</tr>
<tr><td><p>2.2.1</p></td>
<td><p>2023-03-08</p></td>
<td><p><span class="docutils literal">&#64;uclclist</span> entry for <span class="docutils literal">\accoxia</span>, prevent
downcasing <span class="docutils literal">\textStigma</span> to <span class="docutils literal">\textvarstigma</span>.</p></td>
</tr>
<tr><td><p>2.3</p></td>
<td><p>2023-06-01</p></td>
<td><p><span class="docutils literal">&#64;uclclist</span> entries for symbol variants.</p></td>
</tr>
</tbody>
</table>
</section>
<section id="references">
<h2><a class="toc-backref" href="#toc-entry-12" role="doc-backlink">References</a></h2>
<div role="list" class="citation-list">
<div class="citation" id="haralambous-98" role="doc-biblioentry">
<span class="label"><span class="fn-bracket">[</span><a role="doc-backlink" href="#citation-reference-3">Haralambous-98</a><span class="fn-bracket">]</span></span>
<p>Yannis Haralambous
<cite>From Unicode to Typography, a Case Study: the Greek Script</cite>, 1998.
<a class="reference external" href="https://hal.science/hal-02101618">https://hal.science/hal-02101618</a></p>
</div>
<div class="citation" id="ltnews35" role="doc-biblioentry">
<span class="label"><span class="fn-bracket">[</span><a role="doc-backlink" href="#citation-reference-1">ltnews35</a><span class="fn-bracket">]</span></span>
<p>LaTeX Project Team <cite>LaTeX News 35</cite>, June 2022.
<a class="reference external" href="https://www.latex-project.org/news/latex2e-news/ltnews35.pdf">https://www.latex-project.org/news/latex2e-news/ltnews35.pdf</a></p>
</div>
<div class="citation" id="nicholas-03" role="doc-biblioentry">
<span class="label"><span class="fn-bracket">[</span><a role="doc-backlink" href="#citation-reference-2">Nicholas-03</a><span class="fn-bracket">]</span></span>
<p>Nick Nicholas <cite>Titlecase and Adscripts</cite> 2003.
<a class="reference external" href="https://opoudjis.net/unicode/unicode_adscript.html">https://opoudjis.net/unicode/unicode_adscript.html</a></p>
</div>
</div>
</section>
</main>
</body>
</html>