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+% \iffalse meta-comment
+%
+% Copyright 1989-2019 Einar \'Arnason, Johannes L. Braams, Javier
+% Bezos and any individual authors listed elsewhere in this file. All
+% rights reserved.
+%
+% This file is part of the Babel system.
+% --------------------------------------
+%
+% It may be distributed and/or modified under the
+% conditions of the LaTeX Project Public License, either version 1.3
+% of this license or (at your option) any later version.
+% The latest version of this license is in
+% http://www.latex-project.org/lppl.txt
+% and version 1.3 or later is part of all distributions of LaTeX
+% version 2003/12/01 or later.
+%
+% This work has the LPPL maintenance status "maintained".
+%
+% The Current Maintainer of this work is Javier Bezos.
+%
+% The list of all files belonging to the Babel system is
+% given in the file `manifest.bbl. See also `legal.bbl' for additional
+% information.
+%
+% The list of derived (unpacked) files belonging to the distribution
+% and covered by LPPL is defined by the unpacking scripts (with
+% extension .ins) which are part of the distribution.
+% \fi
+% \CheckSum{646}
+%
+% \iffalse
+% Tell the \LaTeX\ system who we are and write an entry on the
+% transcript.
+%<*dtx>
+\ProvidesFile{icelandic.dtx}
+%</dtx>
+%<code>\ProvidesLanguage{icelandic}
+%\fi
+%\ProvidesFile{icelandic.dtx}
+ [2019/07/04 v1.3 Icelandic support from the babel system]
+%\iffalse
+%% File iceland.dtx
+%
+%% Icelandic Language Definition File
+%% Copyright (C) 1996--2019
+%% by Einar \'Arnason <einar@lif.hi.is>
+%% Johannes Braams, TeXniek
+%% Javier Bezos (>=1.2a)
+%
+%%
+%
+%<*filedriver>
+\documentclass{ltxdoc}
+\usepackage[T1]{fontenc}
+\OnlyDescription
+% \expandafter\def\csname u8:ǫ\endcsname{\k{o}}
+% \expandafter\def\csname u8:Ǫ\endcsname{\k{O}}
+\usepackage[utf8]{inputenc}
+\usepackage[icelandic.utf8old,english]{babel}
+\font\manual=logo10 % font used for the METAFONT logo, etc.
+\newcommand*\MF{{\manual META}\-{\manual FONT}}
+\newcommand*\TeXhax{\TeX hax}
+\newcommand*\babel{\textsf{babel}}
+\newcommand*\langvar{$\langle \it lang \rangle$}
+\newcommand*\note[1]{}
+\newcommand*\Lopt[1]{\textsf{#1}}
+\newcommand*\file[1]{\texttt{#1}}
+\begin{document}
+\begin{center}
+ \textbf{\Large A Babel language definition file for
+ Icelandic}\\[3mm]^^A\]
+ Einar \'Arnason\\
+ \texttt{einar@lif.hi.is}
+\end{center}
+ \DocInput{icelandic.dtx}
+\end{document}
+%</filedriver>
+%\fi
+% \GetFileInfo{iceland.dtx}
+%
+%
+% \changes{icelandic-1.1c}{1997/05/21}{Removed code already present in
+% \file{babel.def}}
+%
+% \section{The Icelandic language}
+%
+% \subsection{Overview}
+%
+% The file \file{\filename}\footnote{The file described in this
+% section has version number 1.3 and was last revised on 2019-07-04
+% by Javier Bezos to fix some issues.} defines all the language
+% definition macros for the Icelandic language
+%
+% Customization for the Icelandic language was made following
+% several official and semiofficial publications~\cite{74:_augl,
+% 77:_augl,88:_reglur,94:_si,97:_forst_fs}. These publications do
+% not always agree and we indicate those instances.
+%
+% For this language the character |"| is made active. In
+% table~\ref{tab:icelandic-extras} an overview is given of its
+% purpose.
+% \begin{table}[htb]
+% \begin{center}
+% \begin{otherlanguage*}{icelandic}
+% \begin{tabular}{lp{8cm}}
+% \verb="|= & disable ligature at this position. \\
+% |"-| & an explicit hyphen sign, allowing hyphenation
+% in the rest of the word. \\
+% |""| & like |"-|, but producing no hyphen sign
+% (for compund words with hyphen, e.g.\ |x-""y|). \\
+% |"~| & for a compound word mark without a breakpoint. \\
+% |"=| & for a compound word mark with a breakpoint, allowing
+% hyphenation in the composing words. \\
+% |"`| & for Icelandic left double quotes (looks like ,,). \\
+% |"'| & for Icelandic right double quotes. \\
+% |">| & for Icelandic `french' left double quotes
+% (similar to $>>$).\\
+% |"<| & for Icelandic `french' right double quotes
+% (similar to $<<$).\\
+% |"o| & for old Icelandic "o \\
+% |"O| & for old Icelandic "O \\
+% |"ó| & for old Icelandic "ó \\
+% |"Ó| & for old Icelandic "Ó \\
+% |"e| & for old Icelandic "e \\
+% |"E| & for old Icelandic "E \\
+% |"é| & for old Icelandic "é \\
+% |"É| & for old Icelandic "É \\
+% |\tala| & for typesetting numbers\\
+% |\grada| & for the `degree' symbol\\
+% |\gradur| & for `degrees', e.g. 5~\gradur C\\
+% |\upp| & for textsuperscript \\
+% \end{tabular}
+% \end{otherlanguage*}
+% \caption{The shorthands and extra definitions made
+% by \file{icelandic.ldf}}\label{tab:icelandic-extras}
+% \end{center}
+% \end{table}
+% The shorthands in table~\ref{tab:icelandic-extras} can also be
+% typeset by using the commands in
+% table~\ref{tab:icelandic-commands}.
+% \begin{table}[htb]
+% \begin{center}
+% \begin{otherlanguage*}{icelandic}
+% \begin{tabular}{lp{8cm}}
+% |\ilqq| & for Icelandic left double quotes
+% (looks like ,,). \\
+% |\irqq| & for Icelandic right double quotes
+% (looks like ``). \\
+% |\ilq| & for Icelandic left single quotes
+% (looks like ,). \\
+% |\irq| & for Icelandic right single quotes
+% (looks like `). \\
+% |\iflqq| & for Icelandic `french' left double quotes
+% (similar to $>>$).\\
+% |\ifrqq| & for Icelandic `french' right double quotes
+% (similar to $<<$).\\
+% |\ifrq| & for Icelandic `french' right single quotes
+% (similar to $<$).\\
+% |\iflq| & for Icelandic `french' left single quotes
+% (similar to $>$). \\
+% |\dq| & the original quotes character (|"|). \\
+% |\oob| & for old Icelandic "o \\
+% |\Oob| & for old Icelandic "O \\
+% |\ooob| & for old Icelandic "ó \\
+% |\OOob| & for old Icelandic "Ó \\
+% |\eob| & for old Icelandic "e \\
+% |\Eob| & for old Icelandic "E \\
+% |\eeob| & for old Icelandic "é \\
+% |\EEob| & for old Icelandic "É \\
+% \end{tabular}
+% \end{otherlanguage*}
+% \caption{Commands which produce quotes and old Icelandic
+% diacritics, defined by
+% \file{icelandic.ldf}}\label{tab:icelandic-commands}
+% \end{center}
+% \end{table}
+%
+% Version 1.2 does not raise an error with \textsf{luatex}, and in
+% addition Unicode strings are defined. Shorthands for ó, Ó, é and
+% É with ogonek now works with \verb|utf8| and \textsf{inputenc} in
+% 8-bit engines, but for compatibility and due to some limitations
+% they must be activated explicitly with the modifier
+% \verb|utf8old|, ie:
+% \begin{verbatim}
+% \usepackage[icelandic.utf8old]{babel}
+% \end{verbatim}
+% This modifier is not necessary with \textsf{xe/luatex}. Note with
+% the latter you need a font containing those glyphs (or at least
+% with the possibility to compose them), as well as defining the
+% \verb|EU1| or \verb|EU2| encoding (with \textsf{fontspec} and/or
+% \textsf{fontenc}).\footnote{If you definitely don't want to load
+% it, there is still an alternative -- the \texttt{strings=generic}
+% option described in the \textsf{babel} manual, which relies
+% entirely on the LICR, but this is discouraged.} For example:
+% \begin{verbatim}
+% \documentclass{article}
+% \usepackage[icelandic]{babel}
+% \usepackage{fontspec}
+% \setmainfont{Arial}
+% \begin{document}
+% Íslenska er indóevrópskt, germanskt og vesturnorrænt tungumál sem
+% er einkum talað og ritað á Íslandi og er móðurmál langflestra
+% Íslendinga. (From Wikipedia.)
+% \end{document}
+% \end{verbatim}
+%
+% The original definitions for the ogonek are preserved, even if
+% the results are not always satisfactory. To be fixed.
+%
+% See also below for some extra features.
+%
+% \begin{thebibliography}{1}
+%
+% \bibitem{88:_reglur}
+% Alþingi.
+% \newblock {\em Reglur um frágang þingskjala og prentun umræðna},
+% 1988.
+%
+% \bibitem{74:_augl}
+% Auglýsing um greinarmerkjasetningu.
+% \newblock Stj.tíð B, nr. 133/1974, 1974.
+%
+% \bibitem{77:_augl}
+% Auglýsing um breyting auglýsingu nr. 132/1974 um íslenska
+% stafsetningu.
+% \newblock Stj.tíð B, nr. 261/1977, 1977.
+%
+% \bibitem{unknown72:_first_gramm_treat}
+% Einar Haugen, editor.
+% \newblock {\em First Grammatical Treatise}.
+% \newblock Longman, London, 2 edition, 1972.
+%
+% \bibitem{97:_forst_fs}
+% Staðlaráð Íslands og Fagráð í upplýsingatækni, Reykjavík.
+% \newblock {\em Forstaðall FS 130:1997}, 1997.
+%
+% \bibitem{94:_si}
+% STRÍ Staðlaráð Íslands.
+% \newblock {\em SI - kerfið}, 2 edition, 1994.
+%
+% \end{thebibliography}
+%
+% \StopEventually{}
+%
+%
+% \subsection{\TeX{}nical details}
+%
+% When this file was read through the option \Lopt{icelandic} we make
+% it behave as if \Lopt{icelandic} was specified.
+%
+% \begin{macrocode}
+\def\bbl@tempa{icelandic}
+\ifx\CurrentOption\bbl@tempa
+ \def\CurrentOption{icelandic}
+\fi
+% \end{macrocode}
+%
+% The macro |\LdfInit| takes care of preventing that this file is
+% loaded more than once, checking the category code of the
+% \texttt{@} sign, etc.
+% \begin{macrocode}
+%<*code>
+\LdfInit\CurrentOption{captions\CurrentOption}
+% \end{macrocode}
+%
+% When this file is read as an option, i.e., by the |\usepackage|
+% command, \texttt{icelandic} will be an `unknown' language, so we
+% have to make it known. So we check for the existence of
+% |\l@icelandic| to see whether we have to do something here.
+%
+% \begin{macrocode}
+\ifx\l@icelandic\@undefined
+ \@nopatterns{Icelandic}
+ \adddialect\l@icelandic0
+\fi
+% \end{macrocode}
+%
+% \begin{macro}{\if@Two@E}
+% We will need a new `if' : |\if@Two@E| is true if and only if
+% \LaTeXe{} is running \emph{not} in compatibility mode. It is
+% used in the definitions of the command |\tala| and |\upp|.
+% The definition is somewhat complicated, due to the fact that
+% |\if@compatibility| is not recognized as a |\if| in
+% \LaTeX-2.09 based formats.
+% \begin{macrocode}
+\newif\if@Two@E \@Two@Etrue
+\def\@FI@{\fi}
+\ifx\@compatibilitytrue\@undefined
+ \@Two@Efalse \def\@FI@{\relax}
+\else
+ \if@compatibility \@Two@Efalse \fi
+\@FI@
+% \end{macrocode}
+% \end{macro}
+%
+% The icelandic hyphenation patterns can be used with
+% |\lefthyphenmin| and |\righthyphenmin| set to~2.
+% \changes{icelandic-1.1f}{2000/09/22}{Now use \cs{providehyphenmins}
+% to provide a default value}
+% \begin{macrocode}
+\providehyphenmins{\CurrentOption}{\tw@\tw@}
+% \end{macrocode}
+%
+% \subsection{Captionnames and date}
+%
+% The next step consists of defining the Icelandic equivalents for
+% the \LaTeX{} captionnames.
+%
+% \begin{macro}{\captionsicelandic}
+% The macro |\captionsicelandic| will define all strings used
+% used in the four standard document classes provided
+% with \LaTeX.
+% \changes{icelandic-1.1f}{2000/09/20}{Added \cs{glossaryname}}
+% \changes{icelandic-1.1g}{2002/01/00}{Only use 7-bit ASCII characters
+% in order to keep the texts input encoding independant}
+% \changes{icelandic-1.1g}{2002/01/09}{Added translation for Glossary}
+%
+% \begin{macro}{\dateicelandic}
+% The macro |\dateicelandic| redefines the command |\today|
+% to produce Icelandic dates.
+% \changes{icelandic-1.1c}{1997/10/01}{Use \cs{edef} to define
+% \cs{today} to save memory}
+% \changes{icelandic-1.1c}{1998/03/28}{use \cs{def} instead of
+% \cs{edef}}
+% \changes{icelandic-1.2a}{2015/12/28}{Define strings using
+% \cs{StartBabelCommands}}
+% \changes{icelandic-1.2b}{2016/01/14}{Warning if used with xe/lua
+% without EUx encondings}
+%
+% \begin{macrocode}
+\StartBabelCommands*{icelandic}{captions}
+ [unicode, charset=utf8, fontenc=EU1 EU2 TU]
+ \SetString{\prefacename}{Formáli}
+ \SetString{\abstractname}{Útdráttur}
+ \SetString{\appendixname}{Viðauki}
+ \SetString{\listfigurename}{Myndaskrá}
+ \SetString{\listtablename}{Töfluskrá}
+ \SetString{\indexname}{Atriðisorðaskrá}
+ \SetString{\enclname}{Hjálagt}
+ \SetString{\pagename}{Blaðsíða}
+ \SetString{\seename}{Sjá}
+ \SetString{\alsoname}{Sjá einnig}
+ \SetString{\proofname}{Sönnun}
+ \SetString{\glossaryname}{Orðalisti}
+\StartBabelCommands*{icelandic}{date}
+ [unicode, charset=utf8, fontenc=EU1 EU2 TU]
+ \SetStringLoop{month#1name}{%
+ janúar,febrúar,mars,apríl,maí,júní,%
+ júlí,ágúst,september,október,nóvember,desember}
+% \end{macrocode}
+%
+% And now, the generic branch, using the LICR and assuming T1.
+%
+% \begin{macrocode}
+\StartBabelCommands*{icelandic}{captions}
+ \SetString{\prefacename}{Form\'{a}li}
+ \SetString{\refname}{Heimildir}
+ \SetString{\abstractname}{\'{U}tdr\'{a}ttur}
+ \SetString{\bibname}{Heimildir}
+ \SetString{\chaptername}{Kafli}
+ \SetString{\appendixname}{Vi{\dh}auki}
+ \SetString{\contentsname}{Efnisyfirlit}
+ \SetString{\listfigurename}{Myndaskr\'{a}}
+ \SetString{\listtablename}{T\"{o}fluskr\'{a}}
+ \SetString{\indexname}{Atri{\dh}isor{\dh}askr\'{a}}
+ \SetString{\figurename}{Mynd}
+ \SetString{\tablename}{Tafla}
+ \SetString{\partname}{Hluti}
+ \SetString{\enclname}{Hj\'{a}lagt}
+ \SetString{\ccname}{Samrit}
+ \SetString{\headtoname}{Til:} % in letter
+ \SetString{\pagename}{Bla{\dh}s\'{\i}{\dh}a}
+ \SetString{\seename}{Sj\'{a}}
+ \SetString{\alsoname}{Sj\'{a} einnig}
+ \SetString{\proofname}{S\"{o}nnun}
+ \SetString{\glossaryname}{Or{\dh}alisti}
+\StartBabelCommands*{icelandic}{date}
+ \SetStringLoop{month#1name}{%
+ jan\'{u}ar,febr\'{u}ar,mars,apr\'{\i}l,ma\'{\i},j\'{u}n\'{\i},%
+ j\'{u}l\'{\i},\'{a}g\'{u}st,september,okt\'{o}ber,n\'{o}vember,desember}
+ \SetString\today{%
+ {\number\day}.~\@nameuse{month\romannumeral\month name}
+ {\number\year}}
+\EndBabelCommands
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+%
+% \subsection{Icelandic quotation marks}
+%
+%
+% \begin{macro}{\dq}
+% We save the original double quote character in |\dq| to keep
+% it available, the math accent |\"| can now be typed as |"|.
+% \begin{macrocode}
+\begingroup \catcode`\"12
+\def\x{\endgroup
+ \def\@SS{\mathchar"7019 }
+ \def\dq{"}}
+\x
+% \end{macrocode}
+% \end{macro}
+%
+% Now we can define the icelandic and icelandic `french' quotes.
+% The icelandic `french' guillemets are the reverse of french
+% guillemets. We define single icelandic `french' quotes for
+% compatibility. Shorthands are provided for a number of different
+% quotation marks, which make them useable both outside and
+% inside mathmode.
+%
+% \begin{macrocode}
+\let\ilq\grq
+\let\irq\grq
+\let\iflq\frq
+\let\ifrq\flq
+\let\ilqq\glqq
+\let\irqq\grqq
+\let\iflqq\frqq
+\let\ifrqq\flqq
+% \end{macrocode}
+%
+% \section{Shorthands}
+%
+% The code below is necessary because we need an extra active
+% character. This character is then used as indicated in
+% table~\ref{tab:icelandic-commands}.
+%
+% To be able to define the function of |"|, we also define a
+% couple of `support' macros.
+%
+% \begin{macrocode}
+\initiate@active@char{"}
+\declare@shorthand{icelandic}{"`}{\glqq}
+\declare@shorthand{icelandic}{"'}{\grqq}
+\declare@shorthand{icelandic}{">}{\frqq}
+\declare@shorthand{icelandic}{"<}{\flqq}
+% \end{macrocode}
+% and some additional commands:
+% \begin{macrocode}
+\declare@shorthand{icelandic}{"-}{\nobreak\-\bbl@allowhyphens}
+\declare@shorthand{icelandic}{"|}{%
+ \textormath{\nobreak\discretionary{-}{}{\kern.03em}%
+ \bbl@allowhyphens}{}}
+\declare@shorthand{icelandic}{""}{\hskip\z@skip}
+\declare@shorthand{icelandic}{"~}{\textormath{\leavevmode\hbox{-}}{-}}
+\declare@shorthand{icelandic}{"=}{\nobreak-\hskip\z@skip}
+% \end{macrocode}
+%
+%
+% \subsection{Old Icelandic}
+% \label{oldicelandic}
+%
+% \changes{icelandic-1.1}{1997/04/24}{Added definitions for old
+% icelandic.}
+% \changes{icelandic-1.2a}{2105/03/28}{Reorganized for luatex,
+% Unicode and utf8.}
+%
+% In old Icelandic some letters have special diacritical marks,
+% described for example in \emph{First Grammatical
+% Treatise}~\cite{unknown72:_first_gramm_treat,97:_forst_fs}. We
+% provide these in the \texttt{T1} encoding with the `ogonek', as
+% well in \verb|EU|$x$ encondings. The ogonek is placed with the
+% letters `o', and `O', `ó' and `Ó', `e' and `E', and `é' and
+% `É'. Shorthands are provided for these as well.
+%
+% The following code by Leszek Holenderski lifted from
+% \texttt{polish.dtx} is designed to position the diacritics
+% correctly for every font in every size in Computer Modern. In
+% other fonts they might be slightly misplaced. These macros need a
+% few extra dimension variables.
+%
+% \begin{macrocode}
+\newdimen\pl@left
+\newdimen\pl@down
+\newdimen\pl@right
+\newdimen\pl@temp
+% \end{macrocode}
+%
+% \begin{macro}{\sob}
+% The macro |\sob| is used to put the `ogonek' in the right
+% place.
+%
+% \begin{macrocode}
+\def\sob#1#2#3#4#5{%parameters: letter and fractions hl,ho,vl,vo
+ \setbox0\hbox{#1}\setbox1\hbox{\k{}}\setbox2\hbox{p}%
+ \pl@right=#2\wd0 \advance\pl@right by-#3\wd1
+ \pl@down=#5\ht1 \advance\pl@down by-#4\ht0
+ \pl@left=\pl@right \advance\pl@left by\wd1
+ \pl@temp=-\pl@down \advance\pl@temp by\dp2 \dp1=\pl@temp
+ \leavevmode
+ \kern\pl@right\lower\pl@down\box1\kern-\pl@left #1}
+% \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\oob}
+% \begin{macro}{\Oob}
+% \begin{macro}{\ooob}
+% \begin{macro}{\OOob}
+% \begin{macro}{\eob}
+% \begin{macro}{\Eob}
+% \begin{macro}{\eeob}
+% \begin{macro}{\EEob}
+%
+% Now, just define the composite characters.
+%
+% \begin{macrocode}
+\DeclareTextCommandDefault{\oob}{\sob{o}{.85}{0}{.04}{0}}
+\DeclareTextCommandDefault{\Oob}{\sob{O}{.7}{0}{0}{0}}
+\DeclareTextCommandDefault{\ooob}{\sob{\'{o}}{.85}{0}{.04}{0}}
+\DeclareTextCommandDefault{\OOob}{\sob{\'{O}}{.7}{0}{0}{0}}
+\DeclareTextCommandDefault{\eob}{\sob{e}{1}{0}{.04}{0}}
+\DeclareTextCommandDefault{\Eob}{\sob{E}{1}{0}{.04}{0}}
+\DeclareTextCommandDefault{\eeob}{\sob{\'{e}}{1}{0}{.04}{0}}
+\DeclareTextCommandDefault{\EEob}{\sob{\'{E}}{1}{0}{.04}{0}}
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% And their shorthands.
+%
+% \begin{macrocode}
+\declare@shorthand{icelandic}{"o}{\oob}
+\declare@shorthand{icelandic}{"O}{\Oob}
+\declare@shorthand{icelandic}{"e}{\eob}
+\declare@shorthand{icelandic}{"E}{\Eob}
+\StartBabelCommands*{icelandic}{captions}
+ [unicode, charset=utf8, fontenc=EU1 EU2 TU]
+ \AfterBabelCommands{%
+ \newcommand\icelandic@og{%
+ \@ifundefined{T@\ifcase\bbl@engine\or EU2\or EU1\fi}%
+ {\edef\icelandic@tempa##1{\noexpand\DeclareTextCommand{##1}{TU}}}%
+ {\edef\icelandic@tempa##1{%
+ \noexpand\DeclareTextCommand
+ {##1}{\ifcase\bbl@engine\or EU2\or EU1\fi}}}%
+ \icelandic@tempa{\oob}{ǫ}%
+ \icelandic@tempa{\Oob}{Ǫ}%
+ \icelandic@tempa{\ooob}{\'{ǫ}}%
+ \icelandic@tempa{\OOob}{\'{Ǫ}}%
+ \icelandic@tempa{\eob}{ę}%
+ \icelandic@tempa{\Eob}{Ę}%
+ \icelandic@tempa{\eeob}{\'{ę}}%
+ \icelandic@tempa{\EEob}{\'{Ę}}%
+ \declare@shorthand{icelandic}{"ó}{\ooob}%
+ \declare@shorthand{icelandic}{"Ó}{\OOob}%
+ \declare@shorthand{icelandic}{"é}{\eeob}%
+ \declare@shorthand{icelandic}{"É}{\EEob}}}
+\StartBabelCommands*{icelandic}{captions}
+ \AfterBabelCommands{%
+ \providecommand\icelandic@og{%
+ \declare@shorthand{icelandic}{"^^db}{\OOob}%
+ \declare@shorthand{icelandic}{"^^e9}{\eeob}%
+ \declare@shorthand{icelandic}{"^^c9}{\EEob}%
+ \declare@shorthand{icelandic}{"^^fb}{\ooob}%
+ \@expandtwoargs\in@{,utf8old,}{,\BabelModifiers,}%
+ \ifin@
+ \declare@shorthand{icelandic}{"^^c3}{\icelandic@preq}%
+ \@namedef{icelandic@preq@^^b3}{\ooob}%
+ \@namedef{icelandic@preq@^^93}{\OOob}%
+ \@namedef{icelandic@preq@^^a9}{\eeob}%
+ \@namedef{icelandic@preq@^^89}{\EEob}%
+ \def\icelandic@preq##1{%
+ \@ifundefined{icelandic@preq@\string##1}%
+ {"{}\UTFviii@two@octets ^^c3##1}%
+ {\@nameuse{icelandic@preq@\string##1}}}%
+ \fi}%
+ \icelandic@og
+ \let\icelandic@og\relax}
+\EndBabelCommands
+
+% \end{macrocode}
+%
+% \begin{macro}{\extrasicelandic}
+% \begin{macro}{\noextrasicelandic}
+%
+% The macro |\extrasicelandic|
+% will perform all the extra definitions needed for the Icelandic
+% language. The macro |\noextrasicelandic| is used to cancel the
+% actions of |\extrasicelandic|.
+%
+% For Icelandic the \texttt{"} character is
+% made active. This is done once, later on its definition may vary.
+% \begin{macrocode}
+\@namedef{extras\CurrentOption}{%
+ \languageshorthands{icelandic}}
+\expandafter\addto\csname extras\CurrentOption\endcsname{%
+ \bbl@activate{"}}
+% \end{macrocode}
+% Don't forget to turn the shorthands off again.
+% \changes{icelandic-1.1e}{1999/12/17}{Deactivate shorthands ouside of
+% Icelandic}
+% \begin{macrocode}
+\addto\noextrasicelandic{\bbl@deactivate{"}}
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \subsection{Formatting numbers}
+% \label{numbers}
+%
+% \changes{icelandic-1.1a}{1997/04/26}{Added definitions for
+% formatting numbers in Icelandic and some extra utilities.}
+% This section is lifted from \texttt{frenchb.dtx} by D. Flipo.
+% In English the decimal part starts with a point and thousands
+% should be separated by a comma: an approximation of $1000\pi$
+% should be inputed as |$3{,}141.592{,}653$| in math-mode and
+% as |3,141.592,653| in text.
+% \changes{icelandic-1.1b}{1997/05/05}{Added references to various
+% publications used}
+%
+% In Icelandic the decimal part starts with a comma and thousands
+% should be separated by a space~\cite{88:_reglur} or by a
+% period~\cite{97:_forst_fs}; we have the space. The above
+% approximation of $1000\pi$ should be inputed as
+% |$3\;141{,}592\;653$| in math-mode and as something like
+% |3~141,592~653| in text. Braces are mandatory around the comma in
+% math-mode, the reason is mentioned in the \TeX{}book p.~134:
+% the comma is of type |\mathpunct| (thus normally followed by a
+% space) while the point is of type |\mathord| (no space added).
+%
+% Thierry Bouche suggested that a second type of comma, of type
+% |\mathord| would be useful in math-mode, and proposed to
+% introduce a command (named |\decimalsep| in this package),
+% the expansion of which would depend on the current language.
+%
+% Vincent Jalby suggested a command |\nombre| to conveniently
+% typeset numbers: inputting |\nombre{3141,592653}| either in
+% text or in math-mode will format this number properly according
+% to the current language (Icelandic or non-Icelandic). We use
+% |\nombre| to define command |\tala| in Icelandic.
+%
+% |\tala| accepts an optional argument which happens to be
+% useful with the extension `dcolumn', it specifies the decimal
+% separator used in the \emph{source code}:
+% |\newcolumntype{d}{D{,}{\decimalsep}{-1}}| \\
+% |\begin{tabular}{|d|}\hline | \\
+% | 3,14 \\ | \\
+% | \tala[,]{123,4567} \\ | \\
+% | \tala[,]{9876,543}\\\hline| \\
+% |\end{tabular} | \\
+% will print a column of numbers aligned on the decimal point
+% (comma or point depending on the current language), each slice
+% of 3 digits being separated by a space or a comma according to
+% the current language.
+%
+% \begin{macro}{\decimalsep}
+% \begin{macro}{\thousandsep}
+% We need a internal definition, valid in both text and math-mode,
+% for the comma (|\@comma@|) and another one for the unbreakable
+% fixed length space (no glue) used in Icelandic (|\f@thousandsep|).
+%
+% The commands |\decimalsep| and |\thousandsep| get default
+% definitions (for the English language) when |icelandic| is loaded;
+% these definitions will be updated when the current language is
+% switched to or from Icelandic.
+% \begin{macrocode}
+\mathchardef\m@comma="013B \def\@comma@{\ifmmode\m@comma\else,\fi}
+\def\f@thousandsep{\ifmmode\mskip5.5mu\else\penalty\@M\kern.3em\fi}
+\newcommand{\decimalsep}{.} \newcommand{\thousandsep}{\@comma@}
+\expandafter\addto\csname extras\CurrentOption\endcsname{%
+ \def\decimalsep{\@comma@}%
+ \def\thousandsep{\f@thousandsep}}
+\expandafter\addto\csname noextras\CurrentOption\endcsname{%
+ \def\decimalsep{.}%
+ \def\thousandsep{\@comma@}}
+% \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\tala}
+% The decimal separator used when \emph{inputing} a number
+% with |\tala| \emph{has to be a comma}.
+% |\tala| splits the inputed number into two parts: what
+% comes before the first comma will be formatted by
+% \cs{@integerpart} while the rest (if not empty) will be
+% formatted by \cs{@decimalpart}. Both parts, once formatted
+% separately will be merged together with between them, either
+% the decimal separator \cs{decimalsep} or (in \LaTeXe{}
+% \emph{only}) the optional argument of |\tala|.
+%
+% \begin{macrocode}
+\if@Two@E
+ \newcommand{\tala}[2][\decimalsep]{%
+ \def\@decimalsep{#1}\@tala#2\@empty,\@empty,\@nil}
+\else
+ \newcommand{\tala}[1]{%
+ \def\@decimalsep{\decimalsep}\@tala#1\@empty,\@empty,\@nil}
+\fi
+\def\@tala#1,#2,#3\@nil{%
+ \ifx\@empty#2%
+ \@integerpart{#1}%
+ \else
+ \@integerpart{#1}\@decimalsep\@decimalpart{#2}%
+ \fi}
+% \end{macrocode}
+% The easiest bit is the decimal part:
+% We attempt to read the first four digits of the decimal part, if
+% it has less than 4 digits, we just have to print them, otherwise
+% |\thousandsep| has to be appended after the third digit, and the
+% algorithm is applied recursively to the rest of the decimal part.
+% \begin{macrocode}
+\def\@decimalpart#1{\@@decimalpart#1\@empty\@empty\@empty}
+\def\@@decimalpart#1#2#3#4{#1#2#3%
+ \ifx\@empty#4%
+ \else
+ \thousandsep\expandafter\@@decimalpart\expandafter#4%
+ \fi}
+% \end{macrocode}
+% Formatting the integer part is more difficult because the slices
+% of 3 digits start from the \emph{bottom} while the number is
+% read from the top!
+% This (tricky) code is borrowed from David Carlisle's comma.sty.
+% \begin{macrocode}
+\def\@integerpart#1{\@@integerpart{}#1\@empty\@empty\@empty}
+\def\@@integerpart#1#2#3#4{%
+ \ifx\@empty#2%
+ \@addthousandsep#1\relax
+ \else
+ \ifx\@empty#3%
+ \@addthousandsep\@empty\@empty#1#2\relax
+ \else
+ \ifx\@empty#4%
+ \@addthousandsep\@empty#1#2#3\relax
+ \else
+ \@@integerpartafterfi{#1#2#3#4}%
+ \fi
+ \fi
+ \fi}
+\def\@@integerpartafterfi#1\fi\fi\fi{\fi\fi\fi\@@integerpart{#1}}
+\def\@addthousandsep#1#2#3#4{#1#2#3%
+ \if#4\relax
+ \else
+ \thousandsep\expandafter\@addthousandsep\expandafter#4%
+ \fi}
+% \end{macrocode}
+% \end{macro}
+%
+% \subsection{Extra utilities}
+%
+% We now provide the Icelandic user with some extra utilities.
+%
+% \begin{macro}{\upp}
+% |\upp| is for typesetting superscripts. |\upp| relies on
+% \begin{macro}{\upp@size}
+% The internal macro |\upp@size| holds the size at which the
+% superscript will be typeset. The reason for this is that we have
+% to specify it differently for different formats.
+% \begin{macrocode}
+\ifx\sevenrm\@undefined
+ \ifx\@ptsize\@undefined
+ \let\upp@size\small
+ \else
+ \ifx\selectfont\@undefined
+% \end{macrocode}
+% In this case the format is the original \LaTeX-2.09:
+% \begin{macrocode}
+ \ifcase\@ptsize
+ \let\upp@size\ixpt\or
+ \let\upp@size\xpt\or
+ \let\upp@size\xipt
+ \fi
+% \end{macrocode}
+% When |\selectfont| is defined we probably have NFSS available:
+% \begin{macrocode}
+ \else
+ \ifcase\@ptsize
+ \def\upp@size{\fontsize\@ixpt{10pt}\selectfont}\or
+ \def\upp@size{\fontsize\@xpt{11pt}\selectfont}\or
+ \def\upp@size{\fontsize\@xipt{12pt}\selectfont}
+ \fi
+ \fi
+ \fi
+\else
+% \end{macrocode}
+% If we end up here it must be a plain based \TeX{} format, so:
+% \begin{macrocode}
+ \let\upp@size\sevenrm
+\fi
+% \end{macrocode}
+% \end{macro}
+% Now we can define |\upp|. When \LaTeXe{} runs in
+% compatibility mode (\LaTeX-2.09 emulation), |\textsuperscript| is
+% also defined, but does no good job, so we give two different
+% definitions for |\upp| using |\if@Two@E|.
+% \begin{macrocode}
+\if@Two@E
+ \DeclareRobustCommand*{\upp}[1]{\textsuperscript{#1}}
+\else
+ \DeclareRobustCommand*{\upp}[1]{%
+ \leavevmode\raise1ex\hbox{\upp@size#1}}
+\fi
+% \end{macrocode}
+%
+% \end{macro}
+%
+% Some definitions for special characters.
+% |\grada| needs a special treatment: it is |\char6|
+% in T1-encoding and |\char23| in OT1-encoding.
+% \begin{macrocode}
+\ifx\fmtname\LaTeXeFmtName
+ \DeclareTextSymbol{\grada}{T1}{6}
+ \DeclareTextSymbol{\grada}{OT1}{23}
+\else
+ \def\T@one{T1}
+ \ifx\f@encoding\T@one
+ \newcommand{\grada}{\char6}
+ \else
+ \newcommand{\grada}{\char23}
+ \fi
+\fi
+% \end{macrocode}
+%
+% \begin{macro}{\gradur}
+% Macro for typesetting the abbreviation for `degrees' (as in
+% `degrees Celsius'). As the bounding box of the character `degree'
+% has \emph{very} different widths in CMR/DC and PostScript fonts,
+% we fix the width of the bounding box of |\gradur| to 0.3\,em,
+% this lets the symbol `degree' stick to the preceding
+% (e.g., |45\gradur|) or following character (e.g., |20~\gradur C|).
+% \begin{macrocode}
+\DeclareRobustCommand*{\gradur}{%
+ \leavevmode\hbox to 0.3em{\hss\grada\hss}}
+% \end{macrocode}
+% \end{macro}
+%
+% The macro |\ldf@finish| takes care of looking for a
+% configuration file, setting the main language to be switched on
+% at |\begin{document}| and resetting the category code of
+% \texttt{@} to its original value.
+% \begin{macrocode}
+\ldf@finish\CurrentOption
+%</code>
+% \end{macrocode}
+%
+% \Finale
+%%
+%% \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 \~}
+%%
+\endinput