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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 0.17b.dev: http://docutils.sourceforge.net/" />
<title>textalpha.sty</title>
<meta name="dcterms.rights" content="© 2010 Günter Milde" />
<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 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 CSS2.1_ stylesheet defines rules for Docutils elements without */
/* HTML equivalent. It is required to make the document semantic visible. */
/* */
/* .. _CSS2.1: http://www.w3.org/TR/CSS2 */
/* .. _validates: http://jigsaw.w3.org/css-validator/validator$link */
/* alignment of text and inline objects inside block objects*/
.align-left { text-align: left; }
.align-right { text-align: right; }
.align-center { clear: both; text-align: center; }
.align-top { vertical-align: top; }
.align-middle { vertical-align: middle; }
.align-bottom { vertical-align: bottom; }
/* titles */
h1.title, p.subtitle {
text-align: center;
}
p.topic-title,
p.sidebar-title,
p.rubric,
p.admonition-title,
p.system-message-title {
font-weight: bold;
}
h1 + p.subtitle,
h2 + p.section-subtitle {
font-size: 1.6em;
}
h3 + p.section-subtitle {
font-size: 1.28em;
}
p.subtitle,
p.section-subtitle,
p.sidebar-subtitle {
font-weight: bold;
margin-top: -0.5em;
}
p.sidebar-title {
font-size: larger;
}
p.rubric {
font-size: larger;
color: maroon;
}
a.toc-backref {
color: black;
text-decoration: none; }
/* Warnings, Errors */
div.system-messages h2,
span.problematic,
p.system-message-title {
color: red;
}
/* inline literals */
span.docutils.literal {
font-family: monospace;
white-space: pre-wrap;
}
/* do not wraph at hyphens and similar: */
.literal > span.pre { white-space: nowrap; }
/* Lists */
/* compact and simple lists: no margin between items */
.simple li, .compact li,
.simple ul, .compact ul,
.simple ol, .compact ol,
.simple > li p, .compact > li p,
dl.simple > dd, dl.compact > dd {
margin-top: 0;
margin-bottom: 0;
}
/* Table of Contents */
div.topic.contents { margin: 0.5em 0; }
div.topic.contents ul {
list-style-type: none;
padding-left: 1.5em;
}
/* Enumerated Lists */
ol.arabic { list-style: decimal }
ol.loweralpha { list-style: lower-alpha }
ol.upperalpha { list-style: upper-alpha }
ol.lowerroman { list-style: lower-roman }
ol.upperroman { list-style: upper-roman }
dt span.classifier { font-style: italic }
dt span.classifier:before {
font-style: normal;
margin: 0.5em;
content: ":";
}
/* Field Lists and drivatives */
/* bold field name, content starts on the same line */
dl.field-list > dt,
dl.option-list > dt,
dl.docinfo > dt,
dl.footnote > dt,
dl.citation > dt {
font-weight: bold;
clear: left;
float: left;
margin: 0;
padding: 0;
padding-right: 0.5em;
}
/* Offset for field content (corresponds to the --field-name-limit option) */
dl.field-list > dd,
dl.option-list > dd,
dl.docinfo > dd {
margin-left: 9em; /* ca. 14 chars in the test examples */
}
/* start field-body on a new line after long field names */
dl.field-list > dd > *:first-child,
dl.option-list > dd > *:first-child
{
display: inline-block;
width: 100%;
margin: 0;
}
/* field names followed by a colon */
dl.field-list > dt:after,
dl.docinfo > dt:after {
content: ":";
}
/* Bibliographic Fields (docinfo) */
pre.address { font: inherit; }
dd.authors > p { margin: 0; }
/* Option Lists */
dl.option-list { margin-left: 1.5em; }
dl.option-list > dt { font-weight: normal; }
span.option { white-space: nowrap; }
/* Footnotes and Citations */
dl.footnote.superscript > dd {margin-left: 1em; }
dl.footnote.brackets > dd {margin-left: 2em; }
dl > dt.label { font-weight: normal; }
a.footnote-reference.brackets:before,
dt.label > span.brackets:before { content: "["; }
a.footnote-reference.brackets:after,
dt.label > span.brackets:after { content: "]"; }
a.footnote-reference.superscript,
dl.footnote.superscript > dt.label {
vertical-align: super;
font-size: smaller;
}
dt.label > span.fn-backref { margin-left: 0.2em; }
dt.label > span.fn-backref > a { font-style: italic; }
/* Line Blocks */
div.line-block { display: block; }
div.line-block div.line-block {
margin-top: 0;
margin-bottom: 0;
margin-left: 40px;
}
/* Figures, Images, and Tables */
.figure.align-left,
figure.align-left,
img.align-left,
object.align-left,
table.align-left {
margin-right: auto;
}
.figure.align-center,
figure.align-center,
img.align-center,
object.align-center,
table.align-center {
margin-left: auto;
margin-right: auto;
}
.figure.align-right,
figure.align-right,
img.align-right,
object.align-right,
table.align-right {
margin-left: auto;
}
img.align-center, img.align-right,
object.align-center, object.align-right {
display: block;
}
/* reset inner alignment in figures and tables */
.figure.align-left, .figure.align-right,
figure.align-left, figure.align-right,
table.align-left, table.align-center, table.align-right {
text-align: inherit;
}
/* Sidebar */
aside.sidebar {
width: 30%;
max-width: 26em;
float: right;
clear: right;
}
/* Text Blocks */
blockquote,
div.topic,
div.admonition,
div.system-message,
pre.literal-block,
pre.doctest-block,
pre.math,
pre.code {
margin-left: 1.5em;
margin-right: 1.5em;
}
pre.code .ln { color: gray; } /* line numbers */
/* Tables */
table { border-collapse: collapse; }
td, th {
border-style: solid;
border-color: silver;
padding: 0 1ex;
border-width: thin;
}
td > p:first-child, th > p:first-child { margin-top: 0; }
td > p, th > p { margin-bottom: 0; }
table > caption {
text-align: left;
margin-bottom: 0.25em
}
table.borderless td, table.borderless th {
border: 0;
padding: 0;
padding-right: 0.5em /* separate table cells */
}
/* Document Header and Footer */
header { border-bottom: 1px solid black; }
footer { border-top: 1px solid black; }
/* new HTML5 block elements: set display for older browsers */
header, section, footer, aside, nav, main, article, figure {
display: block;
}
</style>
<style type="text/css">
/* CSS31_ style sheet for the output of Docutils HTML writers. */
/* Rules for easy reading and pre-defined style variants. */
/* */
/* :Author: Günter Milde, based on html4css1.css by David Goodger */
/* :Id: $Id$ */
/* :Copyright: © 2015 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: http://www.w3.org/TR/CSS3 */
/* Document Structure */
/* ****************** */
/* "page layout" */
body {
margin: 0;
background-color: #dbdbdb;
}
div.document,
main {
line-height:1.3;
counter-reset: table figure;
/* avoid long lines --> better reading */
/* optimum is 45…75 characters/line <http://webtypography.net/2.1.2> */
/* OTOH: lines should not be too short because of missing hyphenation, */
max-width: 50em;
padding: 1px 2%; /* 1px on top avoids grey bar above title (mozilla) */
margin: auto;
background-color: white;
}
/* Sections */
/* Transitions */
hr.docutils {
width: 80%;
margin-top: 1em;
margin-bottom: 1em;
clear: both;
}
/* Paragraphs */
/* ========== */
/* vertical space (parskip) */
p, ol, ul, dl, li, dd,
div.line-block,
div.topic,
table {
margin-top: 0.5em;
margin-bottom: 0.5em;
}
p:first-child { margin-top: 0; }
/* (:last-child is new in CSS 3) */
p:last-child { margin-bottom: 0; }
h1, h2, h3, h4, h5, h6,
dl > dd {
margin-bottom: 0.5em;
}
/* Lists */
/* ===== */
/* Separate list entries in compound lists */
dl > dd, ol > li,
/* Definition Lists */
/* Indent lists nested in definition lists */
/* (:only-child is new in CSS 3) */
dd > ul:only-child, dd > ol:only-child { padding-left: 1em; }
/* Description Lists */
/* styled like in most dictionaries, encyclopedias etc. */
dl.description > dt {
font-weight: bold;
clear: left;
float: left;
margin: 0;
padding: 0;
padding-right: 0.5em;
}
/* Field Lists */
/* example for custom field-name width */
dl.field-list.narrow > dd {
margin-left: 5em;
}
/* run-in: start field-body on same line after long field names */
dl.field-list.run-in > dd p {
display: block;
}
/* Bibliographic Fields */
/* generally, bibliographic fields use special definition list dl.docinfo */
/* but dedication and abstract are placed into "topic" divs */
div.abstract p.topic-title {
text-align: center;
}
div.dedication {
margin: 2em 5em;
text-align: center;
font-style: italic;
}
div.dedication p.topic-title {
font-style: normal;
}
/* Citations */
dl.citation dt.label {
font-weight: bold;
}
span.fn-backref {
font-weight: normal;
}
/* Text Blocks */
/* =========== */
/* Literal Blocks */
pre.literal-block,
pre.doctest-block,
pre.math,
pre.code {
font-family: monospace;
}
/* Block Quotes */
blockquote > table,
div.topic > table {
margin-top: 0;
margin-bottom: 0;
}
blockquote p.attribution,
div.topic p.attribution {
text-align: right;
margin-left: 20%;
}
/* Tables */
/* ====== */
/* th { vertical-align: bottom; } */
table tr { text-align: left; }
/* "booktabs" style (no vertical lines) */
table.booktabs {
border: 0;
border-top: 2px solid;
border-bottom: 2px solid;
border-collapse: collapse;
}
table.booktabs * {
border: 0;
}
table.booktabs th {
border-bottom: thin solid;
}
/* numbered tables (counter defined in div.document) */
table.numbered > caption:before {
counter-increment: table;
content: "Table " counter(table) ": ";
font-weight: bold;
}
/* Explicit Markup Blocks */
/* ====================== */
/* Footnotes and Citations */
/* ----------------------- */
/* line on the left */
dl.footnote {
padding-left: 1ex;
border-left: solid;
border-left-width: thin;
}
/* Directives */
/* ---------- */
/* Body Elements */
/* ~~~~~~~~~~~~~ */
/* Images and Figures */
/* let content flow to the side of aligned images and figures */
.figure.align-left,
figure.align-left,
img.align-left,
object.align-left {
display: block;
clear: left;
float: left;
margin-right: 1em;
}
.figure.align-right,
figure.align-right,
img.align-right,
object.align-right {
display: block;
clear: right;
float: right;
margin-left: 1em;
}
/* Stop floating sidebars, images and figures at section level 1,2,3 */
h1, h2, h3, h4 { clear: both; }
/* Numbered figures */
figure.numbered > figcaption > p:before {
counter-increment: figure;
content: "Figure " counter(figure) ": ";
font-weight: bold;
}
/* Admonitions and System Messages */
div.admonition,
div.system-message,
aside.sidebar {
border: medium outset;
margin: 1em 1.5em;
padding: 0.5em 1em;
}
div.caution p.admonition-title,
div.attention p.admonition-title,
div.danger p.admonition-title,
div.error p.admonition-title,
div.warning p.admonition-title,
div.error {
color: red;
}
/* Sidebar */
/* Move right. In a layout with fixed margins, */
/* it can be moved into the margin. */
div.sidebar,
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<body>
<main id="textalpha-sty">
<h1 class="title">textalpha.sty</h1>
<p class="subtitle" id="greek-symbols-in-text">Greek symbols in text</p>
<dl class="docinfo">
<dt class="copyright">Copyright</dt>
<dd class="copyright">© 2010 Günter Milde</dd>
<dt class="licence">Licence</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>
<dt class="identification">Identification</dt>
<dd class="identification"><pre class="literal-block">\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{textalpha}
[2020/10/30 2.0 macros for Greek letters in text]</pre>
</dd>
</dl>
<div class="abstract topic">
<p class="topic-title">Abstract</p>
<p>Provide a set of <span class="docutils literal">\text*</span> macros for Greek characters
in text mode.</p>
</div>
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>The package was renamed from <cite>textgreek</cite> to <cite>textalpha</cite> to prevent
confusion with the <a class="reference external" href="http://ctan.org/pkg/textgreek">textgreek</a> package by Leonard Michlmayr.</p>
</div>
<dl>
<dt>Changelog:</dt>
<dd><table class="borderless">
<colgroup>
<col style="width: 8%" />
<col style="width: 14%" />
<col style="width: 78%" />
</colgroup>
<tbody>
<tr><td><p>0.1</p></td>
<td><p>2010-06-16</p></td>
<td><p>initial version</p></td>
</tr>
<tr><td><p>0.2</p></td>
<td><p>2012-06-27</p></td>
<td><p>support for compound Unicode definitions outside LGR</p></td>
</tr>
<tr><td><p>0.3</p></td>
<td><p>2013-05-03</p></td>
<td><p>new accent macro names with <span class="docutils literal">lgrxenc.def</span> 0.7</p></td>
</tr>
<tr><td><p>0.4</p></td>
<td><p>2013-05-28</p></td>
<td><p>use <span class="docutils literal">lgrenc.def</span> from greek-fontenc.</p></td>
</tr>
<tr><td><p>0.5</p></td>
<td><p>2013-09-11
..</p></td>
<td><p>move to <a class="reference external" href="http://ctan.org/pkg/greek-fontenc">greek-fontenc</a>,
support XeTeX/LuaTeX, add breve below accents.</p></td>
</tr>
<tr><td><p>0.11</p></td>
<td><p>2013-11-28</p></td>
<td><p>compatibility with Xe/LuaTeX in 8-bit mode.</p></td>
</tr>
<tr><td><p>0.12</p></td>
<td><p>2014-12-12</p></td>
<td><p>fix auxiliary macro names,
define symbol macros for breathing accents.</p></td>
</tr>
<tr><td><p>0.13</p></td>
<td><p>2015-09-04
..</p></td>
<td><p>Option <a class="reference internal" href="#normalize-symbols">normalize-symbols</a>: support for symbol variants.
Option <a class="reference internal" href="#keep-semicolon">keep-semicolon</a>: use semicolon as erotimatiko
in LGR.</p></td>
</tr>
<tr><td><p>0.13.2</p></td>
<td><p>2016-02-05</p></td>
<td><p>Support for standard Unicode text font encoding “TU”
(new in fontspec v2.5a).</p></td>
</tr>
<tr><td><p>0.13.4</p></td>
<td><p>2019-07-11</p></td>
<td><p>Auxiliary command for subscript iota.</p></td>
</tr>
<tr><td><p>0.14</p></td>
<td><p>2020-02-28</p></td>
<td><p>Update test for Unicode fonts.
Rename <span class="docutils literal"><span class="pre">greek-euenc</span></span> to <span class="docutils literal"><span class="pre">tuenc-greek</span></span>.
Don’t use <span class="docutils literal">\LastDeclaredEncoding</span>.</p></td>
</tr>
<tr><td><p>1.0</p></td>
<td><p>2020-09-25</p></td>
<td><p>Also set <span class="docutils literal">\encodingdefault</span> with <span class="docutils literal">\greekscript</span>.</p></td>
</tr>
<tr><td><p>2.0</p></td>
<td><p>2020-10-30
..</p></td>
<td><p>Load <span class="docutils literal"><span class="pre">tuenc-greek.def</span></span> with Xe/LuaTeX by default.
Load <span class="docutils literal"><span class="pre">puenc-greek.def</span></span> if used with <a class="reference external" href="http://ctan.org/pkg/hyperref">hyperref</a>.</p></td>
</tr>
</tbody>
</table>
</dd>
</dl>
<div class="contents topic" id="contents">
<p class="topic-title">Contents</p>
<ul class="simple">
<li><p><a class="reference internal" href="#motivation" id="id1">Motivation</a></p></li>
<li><p><a class="reference internal" href="#usage" id="id2">Usage</a></p></li>
<li><p><a class="reference internal" href="#implementation" id="id3">Implementation</a></p>
<ul>
<li><p><a class="reference internal" href="#options" id="id4">Options</a></p>
<ul>
<li><p><a class="reference internal" href="#normalize-symbols" id="id5">normalize-symbols</a></p></li>
<li><p><a class="reference internal" href="#keep-semicolon" id="id6">keep-semicolon</a></p></li>
</ul>
</li>
<li><p><a class="reference internal" href="#symbol-macros-for-breathings" id="id7">Symbol macros for breathings</a></p></li>
<li><p><a class="reference internal" href="#font-encodings" id="id8">Font encodings</a></p></li>
<li><p><a class="reference internal" href="#default-declarations" id="id9">Default declarations</a></p>
<ul>
<li><p><a class="reference internal" href="#greekscript-ensuregreek" id="id10">greekscript, ensuregreek</a></p></li>
<li><p><a class="reference internal" href="#greek-alphabet" id="id11">Greek Alphabet</a></p></li>
<li><p><a class="reference internal" href="#additional-greek-symbols" id="id12">Additional Greek symbols</a></p>
<ul>
<li><p><a class="reference internal" href="#variant-shape-symbols" id="id13">variant shape symbols</a></p></li>
</ul>
</li>
<li><p><a class="reference internal" href="#diacritics" id="id14">Diacritics</a></p></li>
<li><p><a class="reference internal" href="#auxiliary-macros" id="id15">Auxiliary macros</a></p></li>
<li><p><a class="reference internal" href="#semicolon-as-erotimatiko" id="id16">semicolon as erotimatiko</a></p></li>
</ul>
</li>
</ul>
</li>
</ul>
</div>
<section id="motivation">
<h2><a class="toc-backref" href="#id1">Motivation</a></h2>
<p>By default, TeX macros for Greek letters are only valid in mathematical
mode. This package sets up a suitable <a class="reference internal" href="#font-encoding">font encoding</a> and <cite>LaTeX internal
character representations</cite> (LICR) definitions for Greek (<span class="docutils literal">\textalpha</span> –
<span class="docutils literal">\textOmega</span>).</p>
<p>To allow documents using Greek LICR macros without worrying about the TeX
engine used to compile them, this package tests the declared font encodings
and does “the right thing” to set up Greek text font support:</p>
<ul class="simple">
<li><p>If an Unicode font encoding is declared by <span class="docutils literal">fontspec</span>, add Greek LICR
definitions.</p></li>
<li><p>Otherwise, the <a class="reference external" href="README.html#lgr">LGR font encoding</a> is set as <cite>default font encoding</cite>
(cf. <a class="reference external" href="http://mirror.ctan.org/macros/latex/base/fntguide.pdf">fntguide</a> section 5.3) for Greek.</p></li>
</ul>
<p>Advantages:</p>
<ul>
<li><p>Symbols from a Greek text font (e.g. the <a class="reference external" href="http://ctan.org/pkg/cbgreek-complete">CB fonts</a>) can be accessed
without the need for an explicite font-encoding switch anywhere in the
text.</p></li>
<li><p>Unicode input of Greek characters is supported</p>
<ul>
<li><p>via <span class="docutils literal"><span class="pre">\usepackage[utf8]{inputenc}</span></span> and <span class="docutils literal">lgrenc.dfu</span> from
<a class="reference external" href="http://ctan.org/pkg/greek-inputenc">greek-inputenc</a> for 8-bit TeX or XeTeX/LuaTeX in 8-bit compatibility
mode in any font encoding (see <a class="reference external" href="textalpha-doc.tex">textalpha-doc.tex</a>).</p></li>
<li><p>natively by XeTeX/LuaTeX for Unicode fonts.</p>
<p>If 8-bit font encodings like LGR are used alongside Unicode fonts, text
input can be done via the Latin transcription or LICR but <em>not via
literal Unicode characters</em> (see <a class="reference external" href="test-tuenc-greek.tex">test-tuenc-greek.tex</a>).</p>
</li>
</ul>
</li>
</ul>
<div class="admonition attention">
<p class="admonition-title">Attention!</p>
<p>The macros work well in any font encoding for single symbols.
However, with 8-bit TeX engines, the automatic font-encoding switches
behind the doors interfere with kerning between letters and replacement
of accent+character with a pre-composed character.</p>
<p>Therefore, Greek text should be written with the help of <a class="reference external" href="http://ctan.org/pkg/babel">babel</a> or
<a class="reference external" href="http://ctan.org/pkg/polyglossia">polyglossia</a> (setting the language to <span class="docutils literal">greek</span>) or wrapped in the
provided <span class="docutils literal">ensuregreek</span> macro. Using <a class="reference external" href="http://ctan.org/pkg/babel">babel</a> or <a class="reference external" href="http://ctan.org/pkg/polyglossia">polyglossia</a> also helps
to ensure correct hyphenation of Greek text.</p>
</div>
</section>
<section id="usage">
<h2><a class="toc-backref" href="#id2">Usage</a></h2>
<p>Ensure support for Greek characters in text mode with</p>
<pre class="code latex literal-block"><code><span class="keyword">\usepackage</span><span class="name builtin">{</span>textalpha<span class="name builtin">}</span></code></pre>
<p>eventually with the <a class="reference internal" href="#options">options</a> to normalize symbols variants</p>
<pre class="code latex literal-block"><code><span class="keyword">\usepackage</span><span class="name attribute">[normalize-symbols]</span><span class="name builtin">{</span>textalpha<span class="name builtin">}</span></code></pre>
<p>and/or to use the semicolon as <a class="reference external" href="https://en.wikipedia.org/wiki/Question_mark#Erotimatiko">erotimatiko</a> also in 8-bit TeX</p>
<pre class="code latex literal-block"><code><span class="keyword">\usepackage</span><span class="name attribute">[normalize-symbols,keep-semicolon]</span><span class="name builtin">{</span>textalpha<span class="name builtin">}</span></code></pre>
<p>To give <span class="docutils literal">textalpha.sty</span> a chance of finding out which <a class="reference internal" href="#font-encodings">font encodings</a>
are used, load it after <a class="reference external" href="http://ctan.org/pkg/fontspec">fontspec</a> and/or <a class="reference external" href="http://ctan.org/pkg/fontenc">fontenc</a>.</p>
<p>For detailled examples see <a class="reference external" href="textalpha-doc.tex">textalpha-doc.tex</a> and <a class="reference external" href="textalpha-doc.pdf">textalpha-doc.pdf</a>
(8-bit TeX and XeTeX/LuaTeX in 8-bit compatibility mode) as well as
<a class="reference external" href="test-tuenc-greek.tex">test-tuenc-greek.tex</a> and <a class="reference external" href="test-tuenc-greek.pdf">test-tuenc-greek.pdf</a> (XeTeX/LuaTeX with
Unicode fonts).</p>
<p>With XeTeX or LuaTex, Unicode fonts and LGR encoded 8-bit fonts can be used
in the same document (see <a class="reference external" href="test-tuenc-greek.tex">test-tuenc-greek.tex</a>).</p>
</section>
<section id="implementation">
<h2><a class="toc-backref" href="#id3">Implementation</a></h2>
<section id="options">
<h3><a class="toc-backref" href="#id4">Options</a></h3>
<section id="normalize-symbols">
<h4><a class="toc-backref" href="#id5">normalize-symbols</a></h4>
<p>The “variant shape” symbol characters like <span class="docutils literal">03D1 GREEK THETA SYMBOL</span> are
mathematical charcters for mathematical use
(similar to <span class="docutils literal">1D440 MATHEMATICAL ITALIC CAPITAL M</span>).
Unfortunately, some Greek texts sources in Unicode encoding mix letter and
symbol characters .</p>
<p>The “normalize-symbols” option controls the handling of <a class="reference internal" href="#variant-shape-symbols">variant shape
symbols</a> under 8-bit TeX:</p>
<ul class="simple">
<li><p>The option activates a simple “folding” mechanism that merges ϰ and κ to
textkappa etc. for text copied from external sources which may use the
GREEK SYMBOL characters in place of GREEK LETTERS,</p></li>
<li><p>Without this option, variant shape symbols in the input are reported as
errors to prevent information loss in cases where the distinction between
ϰ and κ is intended (e.g. in mathematical or scientific context).</p></li>
</ul>
<p>With XeTeX/LuaTeX and Unicode fonts, this option is ignored.</p>
<pre class="literal-block">\newif\iftextalpha@normalizeSymbols
\DeclareOption{normalize-symbols}{\textalpha@normalizeSymbolstrue}</pre>
</section>
<section id="keep-semicolon">
<h4><a class="toc-backref" href="#id6">keep-semicolon</a></h4>
<p>The <a class="reference external" href="https://en.wikipedia.org/wiki/Question_mark#Erotimatiko">erotimatiko</a> looks like a semicolon but is a
<strong>Greek question mark</strong>:</p>
<ul class="simple">
<li><p>The <a class="reference external" href="README.html#lgr">LGR font encoding</a> uses the Latin question mark as input for the
<cite>erotimatiko</cite> and maps the semicolon to a middle dot (<cite>ano teleia</cite>).</p></li>
<li><p>The Unicode standard provides the code point <span class="docutils literal">037E GREEK QUESTION MARK</span>
but says: “character <span class="docutils literal">003B SEMICOLON</span> (and not 037E) is the preferred
character for Greek question mark”.</p></li>
</ul>
<p>The <span class="docutils literal"><span class="pre">keep-semicolon</span></span> option allows to use the <a class="reference internal" href="#semicolon-as-erotimatiko">semicolon as erotimatiko</a>
in both, Xe/LuaTeX and 8-bit TeX. (The <cite>ano teleia</cite> can be input as
<span class="docutils literal">\textanoteleia</span> or using character <span class="docutils literal">00B7 MIDDLE DOT</span>.)
With XeTeX/LuaTeX and Unicode fonts, this option is ignored.</p>
<pre class="literal-block">\newif\iftextalpha@keepSemicolon
\DeclareOption{keep-semicolon}{\textalpha@keepSemicolontrue}
\ProcessOptions\relax</pre>
</section>
</section>
<section id="symbol-macros-for-breathings">
<span id="font-encoding"></span><h3><a class="toc-backref" href="#id7">Symbol macros for breathings</a></h3>
<p>In the Latin transcription provided by LGR, breathing accents (Dasia and
Psili) are input as < and >. Provide the corresponding NFSS macro accents.
(Used below for LGR, TU, and PU, if these font encodings are defined):</p>
<pre class="literal-block">\newcommand{\textalpha@define@breathings}[1]{
\DeclareTextCommand{\<}{#1}{\accdasia}
\DeclareTextCommand{\>}{#1}{\accpsili}
% Composite accents starting with the new-defined shortcuts:
\DeclareTextCompositeCommand{\>}{#1}{'}{\accpsilioxia}
\DeclareTextCompositeCommand{\>}{#1}{`}{\accpsilivaria}
\DeclareTextCompositeCommand{\>}{#1}{~}{\accpsiliperispomeni}
\DeclareTextCompositeCommand{\<}{#1}{'}{\accdasiaoxia}
\DeclareTextCompositeCommand{\<}{#1}{`}{\accdasiavaria}
\DeclareTextCompositeCommand{\<}{#1}{~}{\accdasiaperispomeni}
}</pre>
</section>
<section id="font-encodings">
<h3><a class="toc-backref" href="#id8">Font encodings</a></h3>
<p>With 8-bit LaTeX, the <a class="reference external" href="README.html#lgr">LGR font encoding</a> is used for Greek characters. If
no Greek-supporting font encoding (TU or LGR) is declared, LGR is
loaded and set up as default Greek font encoding by this package.</p>
<p>With XeTeX or LuaTeX, there is one common input and font encoding –
Unicode. 8-bit TeX font encodings are only used in compatibility mode or for
fonts not available otherwise. For compatibility with the LaTeX font
selection system, <a class="reference external" href="http://ctan.org/pkg/fontspec">fontspec</a> defines the TU font encoding. However
<cite>fontspec</cite> does not define Greek LICR macros. We therefore explicitely
load Greek LICR definitions for XeTeX/LuaTeX from <a class="reference external" href="tuenc-greek.def.html">tuenc-greek.def</a> which in turn includes <a class="reference external" href="greek-fontenc.def.html">greek-fontenc.def</a>.</p>
<p>Ensure a Greek-supporting font encoding exists and supports Greek LICR
macros:</p>
<ul class="simple">
<li><p>Load the Greek LICR definitions for Unicode if the font encoding TU
is detected.</p></li>
<li><p>If none of TU or LGR is declared, load <span class="docutils literal">tuenc.def</span> with
Xe/LuaTeX and <span class="docutils literal">lgrenc.def</span> else.</p></li>
</ul>
<pre class="literal-block">\ifdefined \UnicodeEncodingName % set by LaTeX for Unicode-aware engines
\input{tuenc-greek.def}
\textalpha@define@breathings{\UnicodeEncodingName}
\else
\@ifl@aded{def}{lgrenc}{}{% else
\input{lgrenc.def}
}
\textalpha@define@breathings{LGR}
% Hiatus feature (see greek-fontenc.def and babel-greek (greek.ldf))
\DeclareTextCompositeCommand{\<}{LGR}{^^9f}{\LGR@hiatus}
\DeclareTextCompositeCommand{\>}{LGR}{^^9f}{\LGR@hiatus}
\fi</pre>
<p>LGR may also be used in a document compiled with Xe/LuaTeX
(enables use of 8-bit TeX fonts and input via the Latin transcription).
Add setup for breathings:</p>
<pre class="literal-block">\@ifl@aded{def}{lgrenc}{
\textalpha@define@breathings{LGR}
% Hiatus feature (see greek-fontenc.def and babel-greek (greek.ldf))
\DeclareTextCompositeCommand{\<}{LGR}{^^9f}{\LGR@hiatus}
\DeclareTextCompositeCommand{\>}{LGR}{^^9f}{\LGR@hiatus}
}{}</pre>
<p>The package <a class="reference external" href="http://ctan.org/pkg/hyperref">hyperref</a> defines the PU font encoding which also supports
(monotonic) Greek. It currently misses polytonic greek, archaic symbols,
and the <span class="docutils literal">\greekscript</span> and <span class="docutils literal">\ensuregreek</span> TextCommands:</p>
<pre class="literal-block">\AtBeginDocument{
\@ifl@aded{def}{puenc}{
\makeatletter % required inside \AtBeginDocument
\input{puenc-greek.def}
\textalpha@define@breathings{PU}
\pdfstringdefDisableCommands{\let\TextOrMath\@firstoftwo}
\makeatother
}{}
}</pre>
<p>The package textcomp defines the TS1 font encoding with the MICRO SIGN
named <span class="docutils literal">\texmu</span>. Provide the alias <span class="docutils literal">\textmicro</span>:</p>
<pre class="literal-block">\AtBeginDocument{
\@ifl@aded{def}{ts1enc}{
\DeclareTextSymbol{\textmicro}{TS1}{181} % micro sign
\DeclareTextSymbolDefault{\textmicro}{TS1}
}{}
}</pre>
</section>
<section id="default-declarations">
<h3><a class="toc-backref" href="#id9">Default declarations</a></h3>
<p>The following definitions ensure that the Greek LICR macros can be used
anywhere in the document also with 8-bit TeX by declaring LGR as their
default font encoding. Abort here, if the LGR font encoding is not defined:</p>
<pre class="literal-block">\@ifl@aded{def}{lgrenc}{}{ % else return:
\expandafter\endinput
}</pre>
<section id="greekscript-ensuregreek">
<h4><a class="toc-backref" href="#id10">greekscript, ensuregreek</a></h4>
<p>The <span class="docutils literal">\greekscript</span> declaration ensures the current font encoding supports
the Greek script. <span class="docutils literal"><span class="pre">greek-fontenc.def</span></span> sets this to the empty declaration
for font encodings that do so. This is currently used by <span class="docutils literal">lgrenc.def</span>
(LGR) and <span class="docutils literal"><span class="pre">tuenc-greek.def</span></span> (Greek LICR macros for TU, EU1, or EU2).</p>
<p>We define LGR as default encoding for Greek text. We use
<span class="docutils literal">\ProvideTextCommandDefault</span> to enable the author or other packages to use
an alternative definition (see [<a class="reference external" href="http://mirror.ctan.org/macros/latex/base/fntguide.pdf">fntguide</a>]):</p>
<pre class="literal-block">\ProvideTextCommandDefault{\greekscript}{\fontencoding{LGR}\selectfont
\def\encodingdefault{\greekfontencoding}}</pre>
<p>The <span class="docutils literal">\ensuregreek</span> command can be used to ensure that its argument is set in
a font encoding with support for Greek. Again the default is LGR:</p>
<pre class="literal-block">\ProvideTextCommandDefault{\ensuregreek}[1]{\leavevmode{\greekscript #1}}</pre>
<!-- The [fntguide_] writes
Note that ``\DeclareTextAccentDefault`` can be used on any
one-argument encoding-specific command, not just those defined with
``\DeclareTextAccent``.
However, the simpler alternative
``\DeclareTextAccentDefault{\ensuregreek}{LGR}`` fails with the table of
Unicode characters in the test document `<textalpha-doc.tex>`__:
``! You can't use a prefix with `end-group character }'.`` -->
<p>Eventually, all font encodings supporting Greek script (e.g. LGI, PU, TU)
will declare <span class="docutils literal">\ensuregreek</span> as text command that passes the
argument unchanged. This way, kerning and selection of precomposed glyphs
would work also for cases like <span class="docutils literal"><span class="pre">\ensuregreek{\'A}U</span></span>.</p>
</section>
<section id="greek-alphabet">
<h4><a class="toc-backref" href="#id11">Greek Alphabet</a></h4>
<p>Define the <span class="docutils literal">text*</span> marcos as default for all font encodings:</p>
<pre class="literal-block">\DeclareTextSymbolDefault{\textAlpha}{LGR}
\DeclareTextSymbolDefault{\textBeta}{LGR}
\DeclareTextSymbolDefault{\textGamma}{LGR}
\DeclareTextSymbolDefault{\textDelta}{LGR}
\DeclareTextSymbolDefault{\textEpsilon}{LGR}
\DeclareTextSymbolDefault{\textZeta}{LGR}
\DeclareTextSymbolDefault{\textEta}{LGR}
\DeclareTextSymbolDefault{\textTheta}{LGR}
\DeclareTextSymbolDefault{\textIota}{LGR}
\DeclareTextSymbolDefault{\textKappa}{LGR}
\DeclareTextSymbolDefault{\textLambda}{LGR}
\DeclareTextSymbolDefault{\textMu}{LGR}
\DeclareTextSymbolDefault{\textNu}{LGR}
\DeclareTextSymbolDefault{\textXi}{LGR}
\DeclareTextSymbolDefault{\textOmicron}{LGR}
\DeclareTextSymbolDefault{\textPi}{LGR}
\DeclareTextSymbolDefault{\textRho}{LGR}
\DeclareTextSymbolDefault{\textSigma}{LGR}
\DeclareTextSymbolDefault{\textTau}{LGR}
\DeclareTextSymbolDefault{\textUpsilon}{LGR}
\DeclareTextSymbolDefault{\textPhi}{LGR}
\DeclareTextSymbolDefault{\textChi}{LGR}
\DeclareTextSymbolDefault{\textPsi}{LGR}
\DeclareTextSymbolDefault{\textOmega}{LGR}
%
\DeclareTextSymbolDefault{\textalpha}{LGR}
\DeclareTextSymbolDefault{\textbeta}{LGR}
\DeclareTextSymbolDefault{\textgamma}{LGR}
\DeclareTextSymbolDefault{\textdelta}{LGR}
\DeclareTextSymbolDefault{\textepsilon}{LGR}
\DeclareTextSymbolDefault{\textzeta}{LGR}
\DeclareTextSymbolDefault{\texteta}{LGR}
\DeclareTextSymbolDefault{\texttheta}{LGR}
\DeclareTextSymbolDefault{\textiota}{LGR}
\DeclareTextSymbolDefault{\textkappa}{LGR}
\DeclareTextSymbolDefault{\textlambda}{LGR}
\DeclareTextSymbolDefault{\textmu}{LGR}
\DeclareTextSymbolDefault{\textnu}{LGR}
\DeclareTextSymbolDefault{\textxi}{LGR}
\DeclareTextSymbolDefault{\textomicron}{LGR}
\DeclareTextSymbolDefault{\textpi}{LGR}
\DeclareTextSymbolDefault{\textrho}{LGR}
\DeclareTextSymbolDefault{\textsigma}{LGR}
\DeclareTextSymbolDefault{\textvarsigma}{LGR}
\DeclareTextSymbolDefault{\textfinalsigma}{LGR} % alias for \textvarsigma
\DeclareTextSymbolDefault{\textautosigma}{LGR} % char 115 in LGR
\DeclareTextSymbolDefault{\texttau}{LGR}
\DeclareTextSymbolDefault{\textupsilon}{LGR}
\DeclareTextSymbolDefault{\textphi}{LGR}
\DeclareTextSymbolDefault{\textchi}{LGR}
\DeclareTextSymbolDefault{\textpsi}{LGR}
\DeclareTextSymbolDefault{\textomega}{LGR}</pre>
</section>
<section id="additional-greek-symbols">
<h4><a class="toc-backref" href="#id12">Additional Greek symbols</a></h4>
<p>Including alias names for compatibility with hyperref’s puenc.def.</p>
<p>Ancient Greek Numbers (Athenian Numerals):</p>
<pre class="literal-block">\DeclareTextSymbolDefault{\textpentedeka}{LGR} % GREEK ACROPHONIC ATTIC FIFTY
\DeclareTextSymbolDefault{\textpentehekaton}{LGR} % GREEK ACROPHONIC ATTIC FIVE HUNDRED
\DeclareTextSymbolDefault{\textpenteqilioi}{LGR} % GREEK ACROPHONIC ATTIC FIVE THOUSAND
\DeclareTextSymbolDefault{\textpentemurioi}{LGR} % GREEK ACROPHONIC ATTIC FIFTY THOUSAND</pre>
<p>Archaic letters:</p>
<pre class="literal-block">\DeclareTextSymbolDefault{\textstigma}{LGR} % ϛ
\DeclareTextSymbolDefault{\textstigmagreek}{LGR} % ϛ (puenc.def)
\DeclareTextSymbolDefault{\textvarstigma}{LGR} % stigma variant (no separate Unicode character)
\DeclareTextSymbolDefault{\textkoppa}{LGR} % ϟ Greek small letter koppa
\DeclareTextSymbolDefault{\textkoppagreek}{LGR} % ϟ (puenc.def)
\DeclareTextSymbolDefault{\textKoppa}{LGR} % ϟ Greek letter koppa (numeral koppa)
\DeclareTextSymbolDefault{\textqoppa}{LGR} % ϙ (archaic koppa)
\DeclareTextSymbolDefault{\textQoppa}{LGR} % Ϙ (archaic Koppa)
\DeclareTextSymbolDefault{\textStigma}{LGR} % Ϛ ϹΤ ligature in some fonts
\DeclareTextSymbolDefault{\textStigmagreek}{LGR} % Ϛ (puenc.def)
\DeclareTextSymbolDefault{\textSampi}{LGR} % Ϡ
\DeclareTextSymbolDefault{\textSampigreek}{LGR} % Ϡ (puenc.def)
\DeclareTextSymbolDefault{\textsampi}{LGR} % ϡ
\DeclareTextSymbolDefault{\textsampigreek}{LGR} % ϡ (puenc.def)
\DeclareTextSymbolDefault{\textanoteleia}{LGR} % ·
\DeclareTextSymbolDefault{\texterotimatiko}{LGR} % ; (003B is the preferred character)
\DeclareTextSymbolDefault{\textdigamma}{LGR} % ϝ
\DeclareTextSymbolDefault{\textDigamma}{LGR} % Ϝ
\DeclareTextSymbolDefault{\textdigammagreek}{LGR} % ϝ (puenc.def)
\DeclareTextSymbolDefault{\textDigammagreek}{LGR} % Ϝ (puenc.def)</pre>
<p>numeral signs: <a class="reference external" href="http://en.wikipedia.org/wiki/Greek_numerals">http://en.wikipedia.org/wiki/Greek_numerals</a></p>
<pre class="literal-block">\DeclareTextSymbolDefault{\textdexiakeraia}{LGR} % ʹ (Dexia keraia)
\DeclareTextSymbolDefault{\textnumeralsigngreek}{LGR} % (puenc.def)
\DeclareTextSymbolDefault{\textaristerikeraia}{LGR} % ͵ (Aristeri keraia)
\DeclareTextSymbolDefault{\textnumeralsignlowergreek}{LGR} % (puenc.def)</pre>
<section id="variant-shape-symbols">
<h5><a class="toc-backref" href="#id13">variant shape symbols</a></h5>
<p>Mathematical notation uses variant shapes of some Greek letters as
additional symbols. There are separate code points for the symbol variants
in Unicode but not in the LGR font encoding used for Greek in 8-bit TeX.
The variations have no syntactic meaning in Greek text.</p>
<pre class="literal-block">\DeclareTextSymbolDefault{\textbetasymbol}{LGR} % ϐ GREEK BETA SYMBOL
\DeclareTextSymbolDefault{\textthetasymbol}{LGR} % ϑ $\vartheta$ GREEK THETA SYMBOL
\DeclareTextSymbolDefault{\textphisymbol}{LGR} % ϕ $\phi$ GREEK PHI SYMBOL
\DeclareTextSymbolDefault{\textpisymbol}{LGR} % ϖ $\varpi$ GREEK PI SYMBOL
\DeclareTextSymbolDefault{\textkappasymbol}{LGR} % ϰ GREEK KAPPA SYMBOL
\DeclareTextSymbolDefault{\textrhosymbol}{LGR} % ϱ $\varrho$ GREEK RHO SYMBOL
\DeclareTextSymbolDefault{\textThetasymbol}{LGR} % ϴ GREEK CAPITAL THETA SYMBOL
\DeclareTextSymbolDefault{\textepsilonsymbol}{LGR} % ϵ $\epsilon$ GREEK LUNATE EPSILON SYMBOL</pre>
<p>Define compatibility mappings if the <a class="reference internal" href="#normalize-symbols">normalize-symbols</a> option is set:</p>
<pre class="literal-block">\iftextalpha@normalizeSymbols
\DeclareTextCommand{\textbetasymbol} {LGR}{\textbeta}
\DeclareTextCommand{\textthetasymbol} {LGR}{\texttheta}
\DeclareTextCommand{\textphisymbol} {LGR}{\textphi}
\DeclareTextCommand{\textpisymbol} {LGR}{\textpi}
\DeclareTextCommand{\textkappasymbol} {LGR}{\textkappa}
\DeclareTextCommand{\textrhosymbol} {LGR}{\textrho}
\DeclareTextCommand{\textThetasymbol} {LGR}{\textTheta}
\DeclareTextCommand{\textepsilonsymbol}{LGR}{\textepsilon}
\fi</pre>
</section>
</section>
<section id="diacritics">
<h4><a class="toc-backref" href="#id14">Diacritics</a></h4>
<p>Greek diacritics via “named” macros:</p>
<pre class="literal-block">\DeclareTextAccentDefault{\accdasia}{LGR}
\DeclareTextAccentDefault{\accpsili}{LGR}
\DeclareTextAccentDefault{\acctonos}{LGR}
\DeclareTextAccentDefault{\accvaria}{LGR}
\DeclareTextAccentDefault{\accperispomeni}{LGR}
\DeclareTextAccentDefault{\accdialytika}{LGR}
%
\DeclareTextAccentDefault{\accdasiaoxia}{LGR}
\DeclareTextAccentDefault{\accdasiavaria}{LGR}
\DeclareTextAccentDefault{\accdasiaperispomeni}{LGR}
\DeclareTextAccentDefault{\accpsilioxia}{LGR}
\DeclareTextAccentDefault{\accpsilivaria}{LGR}
\DeclareTextAccentDefault{\accpsiliperispomeni}{LGR}
\DeclareTextAccentDefault{\accdialytikatonos}{LGR}
\DeclareTextAccentDefault{\accdialytikavaria}{LGR}
\DeclareTextAccentDefault{\accdialytikaperispomeni}{LGR}</pre>
<p>Symbol macros for the breathings:</p>
<pre class="literal-block">\DeclareTextAccentDefault{\<}{LGR}
\DeclareTextAccentDefault{\>}{LGR}</pre>
<p>Postfix accents:</p>
<pre class="literal-block">\DeclareTextSymbolDefault{\ypogegrammeni}{LGR} % "small" sub-iota
\DeclareTextSymbolDefault{\prosgegrammeni}{LGR} % "capital" sub-iota</pre>
<p>Other accents in LGR:</p>
<pre class="literal-block">\DeclareTextAccentDefault{\accinvertedbrevebelow}{LGR} % INVERTED BREVE BELOW
\DeclareTextAccentDefault{\textsubarch}{LGR} % tipa, Teubner name: ut
\DeclareTextAccentDefault{\accbrevebelow}{LGR} % BREVE BELOW</pre>
</section>
<section id="auxiliary-macros">
<h4><a class="toc-backref" href="#id15">Auxiliary macros</a></h4>
<p><span class="docutils literal">\MakeUppercase</span> requires four internal commands:</p>
<pre class="literal-block">\DeclareTextAccentDefault{\LGR@accdropped}{LGR}
\DeclareTextAccentDefault{\LGR@accDialytika}{LGR}
\DeclareTextAccentDefault{\LGR@hiatus}{LGR}
\DeclareTextSymbolDefault{\LGR@ypogegrammeni}{LGR}</pre>
</section>
<section id="semicolon-as-erotimatiko">
<h4><a class="toc-backref" href="#id16">semicolon as erotimatiko</a></h4>
<p>The text command <span class="docutils literal">\textsemicolon</span> inserts <span class="docutils literal">\texterotimatiko</span>
in LGR font encoding and a “normal” semicolon else:</p>
<pre class="literal-block">\ProvideTextCommandDefault{\textsemicolon}{;}
\ProvideTextCommand{\textsemicolon}{LGR}{\texterotimatiko}</pre>
<p>The LGR font encoding maps “;” to a middle dot (ano teleia). With the
<a class="reference internal" href="#keep-semicolon">keep-semicolon</a> option, the semicolon is made an active character and calls
<span class="docutils literal">\textsemicolon</span>:</p>
<pre class="literal-block">\iftextalpha@keepSemicolon
\catcode`;=\active
\newcommand{;}{\textsemicolon}
\fi</pre>
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