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This question is directly inspired by Martin Schroder's answer to this question. Namely, I am wondering how would one use LuaTeX or XeTeX to produce Serbian (little bit different than Russian) Cyrillic output using American keyboard layout? How would produce the same output using Serbian keyboard layout? The correct way to produce such output using pdfTeX engine and American keyboard layout is:

\documentclass{article}
\usepackage[OT2,T1]{fontenc}
\input{cyracc.def}
\newcommand\textcyr[1]{{\fontencoding{OT2}\fontfamily{wncyr}\selectfont #1}}
\begin{document}
Serbian alphabet again \dots \textcyr{\cyracc
A B V G D DJ E Zh Z I J K L LJ M N NJ O P R S T \'C U F Kh C Ch \Dzh\ Sh
} 
\end{document}

which gives

enter image here

One can use of course inputenc to use Serbian keyboard. On another hand Babel unfortunately requires Serbian keyboard so for me personally was not interesting.

share|improve this question

3 Answers 3

up vote 10 down vote accepted

Here is a method for XeLaTeX.

Prepare a file ascii-to-serbian.map with the following content:

; TECkit mapping for TeX input conventions <-> Unicode characters

LHSName "ASCII-to-Serbian"
RHSName "UNICODE"

pass(Unicode)

; ligatures from Knuth's original CMR fonts
U+002D U+002D           <>  U+2013  ; -- -> en dash
U+002D U+002D U+002D    <>  U+2014  ; --- -> em dash

U+0027          <>  U+2019  ; ' -> right single quote
U+0027 U+0027   <>  U+201D  ; '' -> right double quote
U+0022           >  U+201D  ; " -> right double quote

U+0060          <>  U+2018  ; ` -> left single quote
U+0060 U+0060   <>  U+201C  ; `` -> left double quote

U+0021 U+0060   <>  U+00A1  ; !` -> inverted exclam
U+003F U+0060   <>  U+00BF  ; ?` -> inverted question

; additions supported in T1 encoding
U+002C U+002C   <>  U+201E  ; ,, -> DOUBLE LOW-9 QUOTATION MARK
U+003C U+003C   <>  U+00AB  ; << -> LEFT POINTING GUILLEMET
U+003E U+003E   <>  U+00BB  ; >> -> RIGHT POINTING GUILLEMET

U+0041 <> U+0410 ; A
U+0042 <> U+0411 ; B
U+0043 <> U+0426 ; C
U+0043 U+0048 <> U+0427 ; CH
U+0043 U+0068 <> U+0427 ; Ch
U+0043 U+0031 <> U+040B ; C1
U+0027 U+0043 <> U+040B ; 'C
U+0044 <> U+0414 ; D
U+0044 U+004A <> U+0402 ; DJ
U+0044 U+006A <> U+0402 ; Dj
U+0044 U+005A U+0048 <> U+040F ; DZH
U+0044 U+007A U+0068 <> U+040F ; Dzh
U+0044 U+0031 <> U+040F ; D1
U+0045 <> U+0415 ; E
U+0046 <> U+0424 ; F
U+0047 <> U+0413 ; G
U+0048 <> U+0425 ; H
U+0049 <> U+0418 ; I
U+004A <> U+0408 ; J
U+004B <> U+041A ; K
U+004B U+0048 <> U+0425 ; KH
U+004B U+0068 <> U+0425 ; Kh
U+004C <> U+041B ; L
U+004C U+004A <> U+0409 ; LJ
U+004C U+006A <> U+0409 ; Lj
U+004D <> U+041C ; M
U+004E <> U+041D ; N
U+004E U+004A <> U+040A ; NJ
U+004E U+006A <> U+040A ; Nj
U+004F <> U+041E ; O
U+0050 <> U+041F ; P
;U+0051 <> ; Q
U+0052 <> U+0420 ; R
U+0053 <> U+0421 ; S
U+0053 U+0048 <> U+0428 ; SH
U+0053 U+0068 <> U+0428 ; Sh
U+0054 <> U+0422 ; T
U+0055 <> U+0423 ; U
U+0056 <> U+0412 ; V
;U+0057 <> ; W
U+0058 <> U+0425 ; X
;U+0059 ; Y
U+005A <> U+0417 ; Z
U+005A U+0048 <> U+0416 ; ZH
U+005A U+0068 <> U+0416 ; Zh

U+0061 <> U+0430 ; a
U+0062 <> U+0431 ; b
U+0063 <> U+0446 ; c
U+0063 U+0068 <> U+0447 ; ch
U+0063 U+0031 <> U+045B ; c1
U+0027 U+0063 <> U+045B ; 'c
U+0064 <> U+0434 ; d
U+0064 U+006A <> U+0452 ; dj
U+0064 U+007A U+0068 <> U+045F ; dzh
U+0064 U+0031 <> U+045F ; d1
U+0065 <> U+0435 ; e
U+0066 <> U+0444 ; f
U+0067 <> U+0433 ; g
U+0068 <> U+0445 ; h
U+0069 <> U+0438 ; i
U+006A <> U+0458 ; j
U+006B <> U+043A ; k
U+006B U+0068 <> U+0445 ; kh
U+006C <> U+043B ; l
U+006C U+006A <> U+0459 ; lj
U+006D <> U+043C ; m
U+006E <> U+043D ; n
U+006E U+006A <> U+045A ; nj
U+006F <> U+043E ; o
U+0070 <> U+043F ; p
;U+0071 <> ; q
U+0072 <> U+0440 ; r
U+0073 <> U+0441 ; s
U+0073 U+0068 <> U+0448 ; sh
U+0074 <> U+0442 ; t
U+0075 <> U+0443 ; u
U+0076 <> U+0432 ; v
;U+0077 <> ; w
U+0078 <> U+0445 ; x
;U+0079 ; y
U+007A <> U+0437 ; z
U+007A U+0068 <> U+0436 ; zh

; Additional (for official translitteration)
U+0110 <> U+0402 ; Đ
U+0111 <> U+0452 ; đ
U+017D <> U+0416 ; Ž
U+017E <> U+0436 ; ž
U+0106 <> U+040B ; Ć
U+0107 <> U+045B ; ć
U+010C <> U+0427 ; Č
U+010D <> U+0447 ; č
U+0044 U+017D <> U+040F ; DŽ
U+0044 U+017E <> U+040F ; Dž
U+0064 U+017E <> U+045F ; dž
U+0160 <> U+0428 ; Š
U+0161 <> U+0448 ; š

Then process it with

teckit_compile ascii-to-serbian.map

This will produce a file ascii-to-serbian.tec that you can put anywhere XeTeX will find it (in the working directory, for instance). Then make the following test file:

\documentclass{article}
\usepackage{fontspec}
\setmainfont[Ligatures=TeX]{Linux Libertine O}
\newfontfamily{\serbianfont}[Mapping=ascii-to-serbian]{Linux Libertine O}
\usepackage{polyglossia}
\setmainlanguage{english}
\setotherlanguage[Script=Cyrillic]{serbian}

\begin{document}
Serbian alphabet again

\begin{serbian}
A B V G D DJ E Zh Z I J K L LJ M N NJ O P R S T C1 U F Kh C Ch D1 Sh

a b v g d dj e zh z i j k l m n nj o p r s t c1 u f kh c ch d1 sh
\end{serbian} 
\end{document}

Sample output after xelatex test.tex

enter image description here

Note 1: the characters Џ and џ can be input also as DZH (or Dzh) and dzh. If this is incorrect (it might bring to incorrect ligatures) then remove the corresponding lines from ascii-to-serbian.map.

Note 2: if you find it inconvenient to type C1 and c1 to get Ћ and ћ, you can add the lines

U+0027 U+0043 <> U+040B ; 'C

and

U+0027 U+0063 <> U+040B ; 'c

after the C1 and c1 entries. This will allow you to input the characters as 'C and 'c.

If you want to input them as \'C and \'c, then insert this code after having loaded the Serbian language with Polyglossia

\let\standardcommandquote\'
\DeclareRobustCommand{\serbiancommandquote}[1]{%
  \ifnum\strcmp{#1}{c}=0 c1\else
    \ifnum\strcmp{#1}{C}=0 C1\else
      \standardcommandquote{#1}\fi\fi}
\makeatletter
\appto\blockextras@serbian{\let\'\serbiancommandquote}
\appto\inlineextras@serbian{\let\'\serbiancommandquote}
\appto\noextras@serbian{\let\'\standardcommandquote}
\makeatother

Note 3 (added Feb. 17): If one has available Unicode input, then also

Đ đ Ž ž Ć ć Č č DŽ Dž dž Š š

are mapped to

Ђ ђ Ж ж Ћ ћ Ч ч Џ џ Ш ш

respectively.

share|improve this answer
    
outstanding!!! Thank you so much. –  Predrag Punosevac Feb 16 '12 at 14:51

Your example will with some changes work with xelatex (and lualatex) too as long as you use only ascii for the serbian. (The file should be encoded in utf8 if you use non-ascii chars outside the serbian):

\documentclass{article}
\usepackage[OT2]{fontenc}
\input{cyracc.def}
\usepackage{fontspec}
\setmainfont{Arial} % to see the difference
\newcommand\textcyr[1]{{\fontencoding{OT2}\fontfamily{wncyr}\selectfont #1}}
\begin{document}
Serbian alphabet again \dots \textcyr{\cyracc
A B V G D DJ E Zh Z I J K L LJ M N NJ O P R  S T \'C U F Kh C Ch \Dzh\ Sh
} roman text again
\end{document}

It is possible the definitions in cyracc.def have unwanted side-effects in longer documents. It is also possible that you get problems if you want hyphenation .

But with this input you are not making use of the strength of xetex/luatex. You are not using real unicode input and you are not using system fonts for the cyrillic - the fonts you can use are limited to the OT2-encoded fonts.

So if you really want to stick to the ASCII input you should better use the mapping mentioned by egreg (which will work only with xelatex). But imho in the long run people who want to use two or more scripts should better learn how to switch the keyboard layout so that they can input the characters directly. For short pieces of text you can find virtual keyboards on the net.

share|improve this answer
    
Very nice comments indeed. I am so happy that we documented this on the web-site. I have been living in U.S. for a long time so I do not use Serbian regularly nor have access to non-American keyboard layouts. I came up with above solution a while ago (with Barbara's Beeton's help who actually worked on those fonts) while trying to type some legal documents for my relatives back home. –  Predrag Punosevac Feb 16 '12 at 14:57
2  
@Predag: You don't need access to a physical serbian keyboard, you only need to activate a layout. E.g. I have a german keyboard and win xp. I just added a greek layout and can switch to it with a shortcut (or by using a button in my task bar) and now when I type hello I get ηελλο. –  Ulrike Fischer Feb 16 '12 at 15:20
    
I know. I just do not fell relabeling keys on the keyboard after I do mapping. I do not use Serbian that often. As you know American has 26 letters and Sebian has to have 30 so it is not exactly bijection so one really needs to do a little bit work. –  Predrag Punosevac Feb 16 '12 at 18:07
1  
@PredragPunosevac: for such a use case I think a more superior solution is to develop a keyboard layout that does a similar mapping so that pressing the “A” key would insert Serbian “A” etc. (on my Debian install there exists an Arabic layout that does a similar job, for example). That would be a universal solution that would work on any application and will save you such TeX hacks. –  Khaled Hosny Feb 16 '12 at 22:50

With LuaLaTeX, it is possible to emulate xetex's mapping feature using opentype feature file. In contrast with xetex mapping features, it is not based on substituting of one unicode character with another, but on replacing unicode characters with glyph names used in the fonts. There is example using gentium:

\documentclass{article}
\usepackage{fontspec}
\usepackage[serbian]{babel}
\def\Dzh{Dzh}
\def\Sh{Sh}
\setmainfont{Gentium Plus}
\newfontfamily\serbianfont[RawFeature=+gsub,FeatureFile=serb.fea,Script=Cyrillic]
{Gentium Plus}
\begin{document}
\noindent српска ћирилица\\
Hello world\\
\serbianfont
Hello world\\
A B V G D DJ E Zh Z I J K Kh L LJ M N NJ O P R S T Th U F Kh C Ch \Dzh\Sh\\
a b v g d dj e zh z i j k kh l lj m n nj o p r s t th u f kh c ch dzh sh
\end{document}

and feature file serb.fea

languagesystem cyrl SRB;
languagesystem cyrl DFLT;

feature liga {
  sub C H  by Checyrillic;
  sub C h by Checyrillic;
  sub D J by Djecyrillic;
  sub D j by Djecyrillic;
  sub D z h by Dzhecyrillic;
  sub D Z H by Dzhecyrillic;
  sub K H by Khacyrillic;
  sub K h by Khacyrillic;
  sub L J by Ljecyrillic;
  sub L j by Ljecyrillic;
  sub N j by Njecyrillic;
  sub N J by Njecyrillic;
  sub S H by Shacyrillic;
  sub S h by Shacyrillic;
  sub Z H by Zhecyrillic;
  sub T h by Tshecyrillic;
  sub T H by Tshecyrillic;
  sub Z h by Zhecyrillic;
  sub c h by checyrillic;
  sub t h by tshecyrillic;
  sub d j by djecyrillic;
  sub d z h by dzhecyrillic;
  sub k h by khacyrillic;
  sub l j by ljecyrillic;
  sub n j by njecyrillic;
  sub s h by shacyrillic;
  sub z h by zhecyrillic;
} liga;

feature gsub {
 sub A by Acyrillic;  
 sub B by Becyrillic;
 sub C by Vecyrillic;
 sub D by Decyrillic;
 sub E by Iecyrillic;
 sub F by Efcyrillic;
 sub G by Gecyrillic;
 sub H by Khacyrillic;
 sub I by Iicyrillic;
 sub J by Jecyrillic;
 sub K by Kacyrillic;
 sub L by Elcyrillic;
 sub M by Emcyrillic;
 sub N by Encyrillic;
 sub O by Ocyrillic;
 sub P by Pecyrillic;
 sub R by Ercyrillic;
 sub S by Escyrillic;
 sub T by Tecyrillic;
 sub U by Ucyrillic;
 sub V by Vecyrillic;
 sub X by Khacyrillic;
 sub Z by Zecyrillic;
 sub a by acyrillic;
 sub b by becyrillic;
 sub c by tsecyrillic;
 sub d by decyrillic;
 sub e by iecyrillic;
 sub f by efcyrillic;
 sub g by gecyrillic;
 sub h by khacyrillic;
 sub i by iicyrillic;
 sub j by jecyrillic;
 sub k by kacyrillic;
 sub l by elcyrillic;
 sub m by emcyrillic;
 sub n by encyrillic;
 sub o by ocyrillic;
 sub p by pecyrillic;
 sub r by ercyrillic;
 sub s by escyrillic;
 sub t by tecyrillic;
 sub u by ucyrillic;
 sub v by vecyrillic;
 sub x by khacyrillic;
 sub z by zecyrillic;
} gsub;

example output

share|improve this answer
    
Beautiful! The font is perfect. –  Predrag Punosevac Feb 17 '12 at 6:00

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