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-rw-r--r--Master/texmf-dist/doc/latex/greek-fontenc/textalpha-doc.tex146
1 files changed, 96 insertions, 50 deletions
diff --git a/Master/texmf-dist/doc/latex/greek-fontenc/textalpha-doc.tex b/Master/texmf-dist/doc/latex/greek-fontenc/textalpha-doc.tex
index 099bbc94cda..00163fdc15e 100644
--- a/Master/texmf-dist/doc/latex/greek-fontenc/textalpha-doc.tex
+++ b/Master/texmf-dist/doc/latex/greek-fontenc/textalpha-doc.tex
@@ -7,17 +7,18 @@
\usepackage[LGR,T1]{fontenc}
% UTF8 input encoding for pdfTeX or LuaTeX in 8-bit compatibility mode:
-% (XeTeX in compatibility mode would require xetex-inputenc.sty, which is not
-% at CTAN but on https://github.com/wspr/xetex-inputenc)
+% (XeTeX in compatibility mode would require xetex-inputenc.sty, which is
+% not at CTAN but on https://github.com/wspr/xetex-inputenc)
\usepackage[utf8]{luainputenc}
-\usepackage[pdfencoding=auto,colorlinks=true]{hyperref}
+\usepackage[pdfencoding=auto,colorlinks=true,linkcolor=blue]{hyperref}
\usepackage{bookmark}
% hyperrefs PU encoding supports Greek LICR macros
\DeclareTextCommand{\ensuregreek}{PU}[1]{#1}
-\usepackage[normalize-symbols] % comment option out to test error reporting
- {textalpha}
+\usepackage[normalize-symbols, % comment option out to test error reporting
+ keep-semicolon%
+ ]{textalpha}
\begin{document}
@@ -25,20 +26,14 @@
\author{Günter Milde}
\maketitle
-Standard 8-bit TeX fonts do not support the Greek script. If Greek
-characters shall be used with 8-bit TeX, setup of a Greek text font and an
-explcit font-encoding switch is required.
-
-With the \emph{textalpha} package, you can easily write a single Greek
-symbol (like \textPsi{} or \textmu{}) or a
-\textlambda\textomicron\textgamma\textomicron\textvarsigma{} in non-Greek
-text as well as ISO-conforming formulas with upright constants (like
-\textpi): $A = \mbox{\textpi} r^2$ vs. $A = \pi r^2$. Input is possible via
-LICR macros (\verb|\textalpha| \ldots \verb|\textOmega|)
-or Unicode literals\footnote{%
+\abstract{\noindent
+The \emph{textalpha} package enables the use of Greek characters
+in text independent of font encoding or TeX engine. Input is possible via
+text commands (\verb|\textalpha| \ldots
+\verb|\textOmega|) or Unicode literals\footnote{%
Requires \emph{\href{http://www.ctan.org/pkg/greek-inputenc}{greek-inputenc}}
-and the utf8 option or XeTeX/LuaTeX.}.
-
+or XeTeX/LuaTeX.}.
+}
\tableofcontents
\section{Usage}
@@ -47,48 +42,48 @@ Load this package in the preamble of your document with
\begin{verbatim}
\usepackage{textalpha}
\end{verbatim}
-If it is loaded after the setup of Unicode fonts with
+eventually with options \texttt{normalize-symbols} and/or
+\texttt{keep-semicolon}.
+
+If \emph{textalpha} is loaded after the setup of Unicode fonts with the
\href{http://www.ctan.org/pkg/fontspec}{\emph{fontspec}} package under
LuaTeX and XeTeX, it provides a compatible interface for Greek in text mode.
-If you want to merge symbol variants, use the
-\texttt{normalize-symbols} option:%
-\footnote{This option is ignored with Unicode fonts.}
-\begin{verbatim}
- \usepackage[normalize-symbols]{textalpha}
-\end{verbatim}
See the source of this document \url{textalpha-doc.tex} for a setup and
usage example, the literate source of the package
\href{textalpha.sty.html}{textalpha.sty} for the implementation, and
-\emph{Font setup for Greek with XeTeX/LuaTeX}
-(\href{euenc-doc.pdf}{euenc-doc.pdf}) for special feature under XeTeX/LuaTeX.
+\href{tuenc-greek-doc.pdf}{tuenc-greek-doc.pdf} for
+\emph{Font setup for Greek with XeTeX/LuaTeX}.
\subsection{option \texttt{normalize-symbols}}
-This option is ignored with Unicode fonts.
-
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.
-TeX supports some of the variant shape symbols in mathematical mode
-($\theta|\vartheta, \phi|\varphi, \pi|\varpi, \rho|\varrho,
-\epsilon|\varepsilon$).
+in Unicode. TeX supports some of the variant shape symbols in mathematical
+mode ($\theta|\vartheta, \phi|\varphi, \pi|\varpi, \rho|\varrho,
+\epsilon|\varepsilon$) but not in the LGR font encoding used for Greek in
+8-bit TeX.
The variations have no syntactic meaning in Greek text and text fonts may
use the variant shapes in place of the “regular” ones as a stylistic choice.
-However, some Greek texts in Unicode encoding use these GREEK
-... SYMBOL characters in place of the corresponding GREEK LETTER ...
-characters.
+However, some Greek texts use these GREEK ... SYMBOL characters in place of
+the corresponding GREEK LETTER ... characters.
The \texttt{normalize-symbols} option merges letters and symbols to Greek
-letters. This way, text copied from external sources can be compiled without
+letters.
+This way, text copied from external sources can be compiled without
errors even if it contains GREEK SYMBOL characters in place of GREEK LETTERS:
\begin{quote}
This text uses both variants for beta (β|ϐ), theta (θ|ϑ), phi (φ|ϕ), pi
(π|ϖ), kappa (κ|ϰ), rho (ρ|ϱ), Theta (Θ|ϴ), and epsilon (ε|ϵ) in the LaTeX
source.
+
+ \greekscript
+ This text uses both variants for beta (β|ϐ), theta (θ|ϑ), phi (φ|ϕ), pi
+ (π|ϖ), kappa (κ|ϰ), rho (ρ|ϱ), Theta (Θ|ϴ), and epsilon (ε|ϵ) in the LaTeX
+ source.
\end{quote}
\textbf{Attention}: Do not use this option in cases where the distinction
@@ -97,7 +92,51 @@ scientific context). Try the \emph{alphabeta} package with the
respective characters in math mode or use XeTeX/LuaTeX with Unicode fonts in
these cases.
-\section{Limitations}
+This option is ignored with Unicode fonts.
+
+\subsection{\texttt{keep-semicolon}}
+
+LGR is no ``standard font encoding''. Latin characters and some other ASCII
+symbols are mapped to Greek ``equivalents'' if LGR is the active font
+encoding. (See
+\href{http://mirrors.ctan.org/language/babel/contrib/greek/usage.pdf}{usage.pdf}
+for a description of this Latin-Greek transliteration.)
+
+Special care is required with the question mark characters: The LGR font
+encoding uses the Latin question mark as input for the \emph{erotimatiko}
+and maps the semicolon to a middle dot (\emph{ano teleia}).
+As a result, Unicode-encoded texts that use the semicolon as
+\emph{erotimatiko} end up with an \emph{ano teleia} in its place!
+Without special care, only the deprecated character 037E GREEK QUESTION MARK%
+\footnote{The Unicode standard provides the code point 037E GREEK QUESTION MARK
+ but says character 003B SEMICOLON and not 037E is the preferred
+ character for a `Greek question mark' (erotimatiko).}
+works with both, Xe/LuaTeX and 8-bit TeX.
+
+The \verb|\textsemicolon| command inserts an \emph{erotimatiko} in LGR and a
+semicolon else (i.e. always a character that looks like a semicolon):
+\begin{quote}
+ Latin (T1) a\textsemicolon{} b,
+ Greek (LGR) \ensuregreek{a\textsemicolon{} b}
+\end{quote}
+
+With the \texttt{keep-semicolon} option, character 003B SEMICOLON can be used
+for the \emph{erotimatiko} also with LGR encoded fonts:
+
+\begin{center}
+\begin{tabular}{lll}
+ Latin (T1) & Greek (LGR) & question mark character \\
+ \midrule
+ Τί φήις; & \ensuregreek{Τί φήις;} & 037E GREEK QUESTION MARK \\
+ Τί φήις; & \ensuregreek{Τί φήις;} & 003B SEMICOLON \\
+ Τί φήις? & \ensuregreek{Τί φήις?} & 003F QUESTION MARK \\
+\end{tabular}
+\end{center}
+
+This option is ignored with Unicode fonts.
+
+
+\section{Limitations \label{sec:limitations}}
Because the internal font encoding switch interferes with other work behind
the scenes, kerning, diacritics and up/down-casing show problems if Greek
@@ -110,7 +149,7 @@ wrapping the Greek text in \verb|\ensuregreek|%
is set in a font encoding supporting Greek.
% This can be used to fix these
% problems without adverse side-effects if the active font encoding is
- % already LGR or Unicode.
+ % already LGR or TU.
},
or XeTeX/LuaTeX with Unicode fonts.
@@ -149,17 +188,20 @@ UPPERCASE:
}
\end{quote}
%
-This fails for accent macros if the active font encoding is not LGR or
-Unicode. Pre-composed literal Unicode characters are handled correctly:
+This fails for accent macros if the active font encoding does not support
+Greek. Pre-composed literal Unicode characters are handled correctly:
\begin{quote}
- \ensuregreek{\'\textAlpha/Ά} (LICR/Unicode in LGR) vs.
- \'\textAlpha/Ά (LICR/Unicode in T1).
+ \begin{tabular}{ccc}
+ & LICR & Unicode \\ \hline
+ LGR & \ensuregreek{\'\textAlpha} & \ensuregreek{Ά} \\
+ T1 & \'\textAlpha & Ά \\
+ \end{tabular}
\end{quote}
The dialytika marks a \emph{hiatus} (break-up of a diphthong). It must be
present in UPPERCASE even where it is redundant in lowercase (the hiatus can
also be marked by an accent on the first character of a diphthong). The
-auto-hiatus feature works in LGR and Unicode font encodings only:
+auto-hiatus feature works in LGR and TU font encodings only:
\begin{quote}
\acctonos\textalpha\textupsilon{}, \acctonos\textepsilon\textiota{} $\mapsto$
\MakeUppercase{\ensuregreek{
@@ -185,7 +227,7 @@ internal font encoding switch: compare
\ensuregreek{\textAlpha\textUpsilon\textAlpha} (LGR) to
\textAlpha\textUpsilon\textAlpha (T1).
-Compiling with LuaTeX provides kerning also over font encoding boundaries.
+Compiling with LuaTeX provides kerning also on font encoding boundaries.
\section{Test and Examples}
@@ -198,6 +240,7 @@ Greek letters via Latin transcription in LGR font encoding:
\ensuregreek{a b g d e z h j i k l m n x o p r sv c t u f q y w}
\end{quote}
+\smallskip\noindent
Greek letters via default macros in other font encoding (here T1):
\begin{quote}
@@ -214,6 +257,7 @@ Greek letters via default macros in other font encoding (here T1):
\textphi{} \textchi{} \textpsi{} \textomega{}
\end{quote}
+\smallskip\noindent
Archaic Greek letters and Greek punctuation
\begin{quote}
@@ -234,6 +278,7 @@ Archaic Greek letters and Greek punctuation
\textvarstigma
\end{quote}
+\smallskip\noindent
Diacritics
\begin{quote}
@@ -269,6 +314,7 @@ Diacritics
\end{quote}
+\medskip\noindent
Accent macros can start with \verb|\a| instead of \verb|\| when the
short form is redefined, e.\,g. inside a \emph{tabbing} environment.
This also works for the new-defined Dasia and Psili shortcuts:
@@ -299,20 +345,20 @@ Kerning is preserved if the font encoding is LGR: \ensuregreek{AΫA}
\toprule
& 0 & 1 & 2 & 3 & 4 & 5 & 6 & 7 & 8 & 9 & A & B & C & D & E & F\\
\midrule
-370 & * & * & * & * & ʹ & ͵ & * & * & & & ͺ & * & * & * & ; & \\
+370 & ◦ & ◦ & ◦ & ◦ & ʹ & ͵ & ◦ & ◦ & & & ͺ & ◦ & ◦ & ◦ & ; & \\
380 & & & & & ΄ & ΅ & Ά & · & Έ & Ή & Ί & & Ό & & Ύ & Ώ\\
390 & ΐ & Α & Β & Γ & Δ & Ε & Ζ & Η & Θ & Ι & Κ & Λ & Μ & Ν & Ξ & Ο\\
3A0 & Π & Ρ & & Σ & Τ & Υ & Φ & Χ & Ψ & Ω & Ϊ & Ϋ & ά & έ & ή & ί\\
3B0 & ΰ & α & β & γ & δ & ε & ζ & η & θ & ι & κ & λ & μ & ν & ξ & ο\\
3C0 & π & ρ & ς & σ & τ & υ & φ & χ & ψ & ω & ϊ & ϋ & ό & ύ & ώ & \\
-3D0 & * & * & * & * & * & * & * & * & Ϙ & ϙ & Ϛ & ϛ & Ϝ & ϝ & * & ϟ\\
-3E0 & Ϡ & ϡ & * & * & * & * & * & * & * & * & * & * & * & * & * & *\\
-3F0 & * & * & * & * & * & * & * & * & * & * & * & * & * & * & * & *\\
+3D0 & ◦ & ◦ & ◦ & ◦ & ◦ & ◦ & ◦ & ◦ & Ϙ & ϙ & Ϛ & ϛ & Ϝ & ϝ & ◦ & ϟ\\
+3E0 & Ϡ & ϡ & ◦ & ◦ & ◦ & ◦ & ◦ & ◦ & ◦ & ◦ & ◦ & ◦ & ◦ & ◦ & ◦ & ◦\\
+3F0 & ◦ & ◦ & ◦ & ◦ & ◦ & ◦ & ◦ & ◦ & ◦ & ◦ & ◦ & ◦ & ◦ & ◦ & ◦ & ◦\\
\bottomrule
\end{tabular}
} % end centerline
\caption{Greek and Coptic Unicode Block, input as literal Unicode
- characters in T1 font encoding (legend: * glyph missing in LGR).}
+ characters in T1 font encoding (legend: ◦ glyph missing in LGR).}
\label{tab:greek-and-coptic}
\end{table}