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+\def\filename{eiad.dtx}
+\def\fileversion{1.0}
+\def\filedate{1996/11/13}
+\let\docversion=\fileversion
+\let\docdate=\filedate
+% \iffalse meta-comment
+%
+% Copyright 1996 by Uwe Muench
+%
+% For further copyright information, and conditions for modification
+% and distribution, see the file legal.txt of the LaTeX2e
+% distribution, and any other copyright notices in this file.
+%
+% This system is distributed in the hope that it will be useful,
+% but WITHOUT ANY WARRANTY; without even the implied warranty of
+% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+%
+% For error reports concerning UNCHANGED versions of this file, please
+% contact me (email: muench@ph-cip.uni-koeln.de)
+%
+% Please do not request updates from me directly. Primary
+% distribution is through the CTAN archives.
+%
+%
+% Permission is granted to copy this file to another file with a
+% clearly different name and to customize the declarations in that
+% copy to serve the needs of your installation, provided that you
+% comply with the conditions in the file legal.txt of the LaTeX2e
+% distribution.
+%
+% However, NO PERMISSION is granted to produce or to distribute a
+% modified version of this file under its original name.
+%
+% You are NOT ALLOWED to change this file.
+%
+%
+%
+% \fi
+% \iffalse
+%%% File: eiad.dtx
+%% Copyright (C) 1996 Uwe Muench
+%% all rights reserved.
+%<package>\NeedsTeXFormat{LaTeX2e}
+%<package>\ProvidesPackage{eiad}[1996/11/13 v1.0 LaTeX package eiad]
+%<*driver>
+\documentclass{ltxdoc}
+\usepackage{eiad}
+\GetFileInfo{eiad.sty}
+\EnableCrossrefs
+\RecordChanges
+\begin{document}
+\title{The \texttt{eiad} package\thanks
+ {This file has version number \fileversion, dated \filedate.}\\
+ for use with \LaTeX2e}
+\author{Uwe M\"unch\\Schmittgasse~92\\51143 K\"oln\\
+ \texttt{muench@ph-cip.uni-koeln.de}}
+\date{\docdate}
+\maketitle
+\DocInput{eiad.dtx}
+\PrintChanges
+\end{document}
+%</driver>
+% \fi
+%
+% \CheckSum{15}
+%% \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 \~}
+%
+% \changes{v1.0}{1996/03/03}{First release}
+%
+% \section{Introduction}
+%
+% The font \textsf{eiad} provides a roman and a bold version of
+% Irish fonts for typesetting in gaelic. They are based on the
+% Computer Modern fonts. This font family was written by
+% Ivan~A.~Derzhanski and can be found on the CTAN in the directory
+% \texttt{tex-archive/fonts/eiad}.
+% This package provides means to use this font under \LaTeXe.
+%
+%
+% \section{Usage}
+%
+% This file can be used as a package by placing its name
+% in the argument of |\usepackage|. Afterwards the font family
+% \textsf{eiad}
+% is defined. This could also have been done by providing a
+% font definition file.
+%
+% \DescribeMacro{\eiadfamily}
+% The command |\eiadfamily| changes the current font family to
+% \texttt{eiad} and the encoding to \texttt{U} (unknown). The
+% \texttt{U} encoding is used
+% since the Irish long vowels are positioned at places where
+% e.\,g. the ligatures of the \texttt{OT1}-encoding (like ffl) can be found
+% normally (the new additional characters have to be somewhere
+% obviously\dots).
+% Usually this command should be used in a \TeX{} group only.
+%
+% \DescribeMacro{\texteiad}
+% The command |\texteiad| typesets its argument in the
+% \textsf{eiad} font.
+%
+% \DescribeMacro{\eiad}
+% The command |\eiad| provides the old font changing command (like
+% |\rm| compared to |\textrm|). A use of |\eiad| in math mode is
+% not possible.
+%
+% To access the new long vowels, the aspirated consonants and the
+% ligature `agus', I cite Ivan Derzhanski:
+% \begin{quote}
+% Within \TeX{} the accented Irish letters are accessible as ligatures, in
+% a manner consistent with the usage on the mailing-list
+% \texttt{gaelic-l}. A vowel followed by a slash yields a long
+% vowel; a lowercase consonant followed by `h', or
+% an uppercase consonant followed by either `H' or `h', yields an
+% aspirated consonant (the latter only works with those consonants
+% which actually undergo aspiration; for such things as `n' with a dot,
+% as found in some old texts, the standard \TeX nique (in this case |\.n|)
+% must be used.) The ligature `agus' is accessed as s` (`s'-backquote).
+% \end{quote}
+% So we get the following tables, first the vowels:
+% \begin{quote}
+% \begin{tabbing}
+% Input:\hspace{1cm}\= |a/| \= |e/| \= |i/| \= |o/| \= |u/| \\
+% \textsf{eiad} font \> \texteiad{a/} \> \texteiad{e/}\>
+% \texteiad{i/}\> \texteiad{o/} \> \texteiad{u/}
+% \end{tabbing}
+% \end{quote}
+% And now the aspirated consonants and the agus ligature:
+% \begin{quote}
+% \begin{tabbing}
+% Input:\hspace{1cm}\=
+% |s`| (agus) \= |bh| \= |ch| \= |dh| \= |fh| \= |gh|
+% \= |mh| \= |ph| \= |sh| \= |th| \\
+% \textsf{eiad} font \> \texteiad{s`} \>
+% \texteiad{bh} \> \texteiad{ch} \> \texteiad{dh} \> \texteiad{fh} \>
+% \texteiad{gh} \> \texteiad{mh} \> \texteiad{ph} \> \texteiad{sh} \>
+% \texteiad{th}
+% \end{tabbing}
+% \end{quote}
+% One could write commands which access these special characters only
+% during typesetting in the \textsf{eiad} font, otherwise creating a normal
+% vowel or consonant (instead of e.\,g.~a/ in the output). But I
+% don't think this is reasonable since the above transcription
+% seems to be common use. So it is possible to use your input text as
+% transcription also; a conversion to normal vowels or consonants
+% would be only an annoyance. Please contact me, if there is a
+% different transcription method, one could implement through such
+% macros.
+%
+% \StopEventually{}
+%
+%
+% \section{Implementation}
+%
+% First we declare a new font family for the \textsf{eiad} font.
+% \begin{macrocode}
+\DeclareFontFamily{OT1}{eiad}{}
+% \end{macrocode}
+%
+% This font is only available in the normal and the bold
+% series at 10 point, so we always scale silently to the desired
+% size.
+%
+% \begin{macrocode}
+\DeclareFontShape{OT1}{eiad}{m}{n}{<->s* eiad10}{}
+\DeclareFontShape{OT1}{eiad}{m}{bx}{<->s* eiadbf10}{}
+% \end{macrocode}
+%
+% Now we define the font changing commands.
+%
+% \begin{macro}{\eiadfamily}
+% The macro |\eiadfamily| selects the \textsf{eiad} family.
+% \begin{macrocode}
+\DeclareRobustCommand\eiadfamily{%
+ \fontfamily{eiad}%
+ \fontencoding{OT1}%
+ \selectfont}
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\texteiad}
+% The macro |\texteiad| typesets its argument in the \textsf{eiad} font.
+% \begin{macrocode}
+\DeclareTextFontCommand\texteiad{\eiadfamily}
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\eiad}
+% The macro |\eiad| is the old |\texteiad| version (compare |\rm|
+% to |\textrm|). A use of the \textsf{eiad} font in math mode is forbidden:
+% In math mode the switch |\eiad| is defined as |\relax|.
+% \begin{macrocode}
+\DeclareOldFontCommand{\eiad}{\eiadfamily}{%
+ \relax}% Switch for math mode
+% \end{macrocode}
+% \end{macro}
+%
+% \Finale
+%
+\endinput