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CYRACC.DEF
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%% @texfile{
%% filename="cyracc.def",
%% version="2.1",
%% date="31-MAY-1991",
%% filetype="TeX: option",
%% copyright="Copyright (C) American Mathematical Society,
%% all rights reserved. Copying of this file is
%% authorized only if either:
%% (1) you make absolutely no changes to your copy
%% including name; OR
%% (2) if you do make changes, you first rename it to some
%% other name.",
%% author="American Mathematical Society",
%% address="American Mathematical Society,
%% Technical Support Department,
%% P. O. Box 6248,
%% Providence, RI 02940,
%% USA",
%% telephone="401-455-4080 or (in the USA) 800-321-4AMS",
%% email="Internet: Tech-Support@Math.AMS.org",
%% codetable="ISO/ASCII",
%% checksumtype="line count",
%% checksum="273",
%% keywords="amsfonts, tex, cyrillic",
%% abstract="This file contains definitions of accents and
%% special characters required for use of cyrillic fonts
%% arranged according to the AMS scheme.
%% The \font specification(s) should be made elsewhere, and should include
%% \newfam\cyrfam
%% \font\...cyr=wncyr... (e.g. \font\tencyr=wncyr10 )
%% An appropriate definition for cyrillic, usable in math and text, is
%% \def\cyr{\fam\cyrfam\...cyr\cyracc}
%% More extensive instructions for using cyrillic fonts are included in
%% the AMSFonts 2.0 User's Guide."
%% }
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\chardef\tempcat=\the\catcode`\@
\catcode`\@=11
% The first set of definitions is what will be in effect outside of cyrillic,
% i.e., in transliterated text.
% Definition of \cydot is not ideal; real dot should be in an accent font.
\def\cydot{{\mathsurround=0pt$\cdot$}}
% \ubar is the definition of \b from PLAIN; it may not work in math mode.
\def\ubar#1{\oalign{#1\crcr\hidewidth
\vbox to.2ex{\hbox{\char22}\vss}\hidewidth}}
% Soft and hard signs are represented in transliteration by prime and
% double prime respectively.
\def\cprime{\/{\mathsurround=0pt$'$}}
\def\Cprime{{\mathsurround=0pt$'$}}
\def\cdprime{\/{\mathsurround=0pt$''$}}
\def\Cdprime{{\mathsurround=0pt$\ubar{\hbox{$''$}}$}}
\def\dbar{dj} % make real barred d when accent font available
\def\Dbar{Dj} % ""
% It would be nice to make these control sequences unnecessary; that will
% probably require d to become active.
\def\dz{dz}
\def\Dz{Dz}
\def\dzh{dzh\cydot }
\def\Dzh{Dzh\cydot }
% Stress marks are sometimes used in cyrillic text, mainly for pedagogic
% reasons. These definitions support stress marks within {\cyr ...};
% in transliteration, they are suppressed. Stress is indicated in
% input by \! preceding a letter on which a stress mark is to appear;
% an acute accent will appear in the output. Since \! is also a plain
% command, for negative thin space in math mode, test for math mode and
% include the plain definition as appropriate.
\def\@gobble#1{}
\def\@testgrave{\`}
\def\@stressit{\futurelet\chartest\@stresschar }
\def\@stresschar#1{%
\ifx #1y\def\result{\futurelet\chartest\@yligature}%
\else \ifx #1Y\def\result{\futurelet\chartest\@Yligature}%
\else \ifx\chartest\@testgrave \def\result{\accent"26 }%
\else \def\result{\accent"26 #1}%
\fi \fi \fi
\result }
\def\@yligature{%
\ifx a\chartest \def\result{\accent"26 \char"1F \@gobble}%
\else \ifx u\chartest \def\result{\accent"26 \char"18 \@gobble}%
\else \def\result{\accent"26 y}%
\fi \fi
\result }
\def\@Yligature{%
\ifx a\chartest \def\result{\accent"26 \char"17 \@gobble}%
\else \ifx A\chartest \def\result{\accent"26 \char"17 \@gobble}%
\else \ifx u\chartest \def\result{\accent"26 \char"10 \@gobble}%
\else \ifx U\chartest \def\result{\accent"26 \char"10 \@gobble}%
\else \def\result{\accent"26 Y}%
\fi \fi \fi \fi
\result }
\def\!{\ifmmode \mskip-\thinmuskip \fi}
% These are the definitions that will produce cyrillic letters within
% {\cyr ...} for letters represented in input by control sequences and
% accented latin letters.
\def\cyracc{%
\def\cydot{{\kern0pt}}%
\def\cprime{\char"7E }\def\Cprime{\char"5E }%
\def\cdprime{\char"7F }\def\Cdprime{\char"5F }%
\def\dbar{dj}\def\Dbar{Dj}%
\def\dz{\char"1E }\def\Dz{\char"16 }%
\def\dzh{\char"0A }\def\Dzh{\char"02 }%
\def\'##1{\if c##1\char"0F %
\else \if C##1\char"07 %
\else \accent"26 ##1\fi \fi }%
\def\`##1{\if e##1\char"0B %
\else \if E##1\char"03 %
\else \errmessage{accent \string\` not defined in cyrillic}%
##1\fi \fi }%
\def\=##1{\if e##1\char"0D %
\else \if E##1\char"05 %
\else \if \i##1\char"0C %
\else \if I##1\char"04 %
\else \errmessage{accent \string\= not defined in cyrillic}%
##1\fi \fi \fi \fi }%
\def\u##1{\if \i##1\accent"24 i%
\else \accent"24 ##1\fi }%
\def\"##1{\if \i##1\accent"20 \char"3D %
\else \if I##1\accent"20 \char"04 %
\else \accent"20 ##1\fi \fi }%
\def\!{\ifmmode \def\result{\mskip-\thinmuskip}%
\else \def\result{\@stressit}\fi \result}}
% If cyrillic strings are to be included in \mark's, the accents need
% to be kept in unexpanded form until the \mark's are interpreted.
% See note on \mark below for details.
\def\keep@cyracc{\let\cyr=\relax \let\i=\relax
\let\ubar=\relax \let\cydot=\relax
\let\cprime=\relax \let\Cprime=\relax
\let\cdprime=\relax \let\Cdprime=\relax
\let\dbar=\relax \let\Dbar=\relax
\let\dz=\relax \let\Dz=\relax
\let\dzh=\relax \let\Dzh=\relax
\let\'=\relax \let\`=\relax \let\==\relax
\let\u=\relax \let\"=\relax \let\!=\relax }
\catcode`\@=\tempcat
\endinput
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ***** CYRACC.DEF *****
%
% Access to the cyrillic is through the MR 1980 transliteration scheme,
% using TeX/Metafont ligature capability. (An alternate set of ligatures
% exists, for accessing letters beyond the 26 located in the font positions
% of the 26 roman letters. An authoritative list of the ligature rules is
% given below, under the heading Ligatures.) Successful use of this file
% requires appropriate cyrillic and accent fonts, arranged according to
% the AMS/MR scheme.
%
% There are some weaknesses in this ligaturing and accent system.
% The following are known to be less than satisfactory:
%
% the intermediate `ligatures' for shch access numerals;
% primes (transliteration of hard/soft signs) use math mode;
% underbar on `cap' double prime is too low (hard sign);
% thorn d's don't yet exist;
% \cydot uses math mode;
% this scheme is not compatible with automatic Russian hyphenation.
%
%
% Notes on the macros:
%
% The single space following each hex character code is necessary
% to prevent the next input character from being gobbled.
%
%
% Note on \mark :
%
% Control sequences such as these cyrillic accents should remain
% unexpanded when generating \mark's; otherwise, the definition of
% the expanded strings in effect when the \mark is used may be
% inappropriate. By \let\...=\relax , the \... takes on the important
% characteristic of a primitive that it will not be expanded further.
% The following code has been shown to generate correct \mark entries
% that can be used successfully in running heads:
%
% \newtoks\marktoks
% \def\domark{\keep@cyracc \mark{\the\marktoks}}
%
% In running heads, the marks should be accessed using \the to expand
% the tokens strings properly.
%
%
% Ligatures
%
% This is a list of all the letter ligatures in the AMS cyrillic fonts,
% and in other cyrillic fonts (such as those developed at the University
% of Washington that use the AMS arrangement).
%
% LOWER CASE LIGATURES
%
% A. All-letter ligatures
%
% ch = `q
% dj = '016
% kh = `h
% lj = '011
% nj = '010
% sh = `x; xc = `7 (shc); 7h = `w (shch)
% ts = `c
% ya = '037
% yu = '030
% zh = '031
%
% B. Ligatures with keyed numerals
%
% c1 = '017
% d1 = '016 (dj); d2 = '012 (dzh); d3 = '036 (dz)
% e1 = '013; e2 = '015
% i1 = '014
% j1 = '037 (ya); j2 = '030 (yu)
% l1 = '011 (lj)
% n1 = '010 (nj)
% p1 = '176; p2 = '177
% z1 = '031 (zh)
%
% UPPER CASE LIGATURES
% A. All-letter ligatures
%
% CH, Ch = `Q
% KH, Kh = `H
% LJ, Lj = '001
% NJ, Nj = '000
% SH, Sh = `X; XH, Xh = `6 (SHC, SHc, Shc);
% 6H, 6h = `W (SHCH, SHCh, SHch, Shch)
% TS, Ts = `C
% YA, Ya = '027
% YU, Yu = '020
% ZH, Zh = '021
%
% B. Ligatures with keyed numerals
%
% C1 = '007
% D1 = '006 (DJ); D2 = '002 (DZH); D3 = '026 (DZ)
% E1 = '003; E2 = '005
% I1 = '004
% J1 = '027 (YA); J2 = '020 (YU)
% L1 = '001 (LJ)
% N0 = '175 (Number sign); N1 = '000 (NJ)
% P1 = '136; P2 = '137
% Z1 = '021 (ZH)
%
% DEACTIVATED LIGATURES
%
% The dzh and DZH ligatures were originally built in the following manner,
% but the results were not compatible with desired keyboarding schemes.
%
% dz = '036; '036(roman s)h = '012 (dzh)
% DZ = '026; '026(roman S)H = '002 (DZH)
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%