Fonts & Character Sets ⇒ Turning on an alternate Glyph

[AleCes]

Hello everybody,

there's a particular Serbian glyph I want to turn on: this glyph, in FreeSerif Italic & BoldItalic, appears in the "salt" look up 10. I know I can turn on Style=Alternate, but the fact is "salt" is useful only with Language=Serbian and Script=Cyrillic and in the italic and bold italic versions, because this glyph doesn't appear in the regular (upright) or bold versions. Therefore I get tons of error messages and compiling takes aeons, all hassles I'd like to skip.

Code: Select all

\documentclass[a4paper]{book}
\usepackage{fontspec}
\defaultfontfeatures{Mapping=tex-text}
\setmainfont{FreeSerif}

\usepackage{polyglossia}
\setmainlanguage{serbian}

\usepackage{xunicode}
\usepackage{xltxtra}

\begin{document}
  \emph{ш}
\end{document}

Thank you for your cooperation.

[AleCes]

I found out I must add to \defaultfontfeatures {Alternate=0} to get the glyph, yet salt is only active in italic and italic bold, otherwise it gives me error messages, how can I let XeLaTeX know that he must enable the salt table only with italic and italic bold in Cyrillic script (not other scripts)?

[AleCes]

The solution is this.

Code: Select all

\defaultfontfeatures{
  Mapping=tex-text,
  ItalicFeatures={
    Script=Cyrillic,
    Language=Serbian,
    Style=Alternate
  },
  BoldItalicFeatures={
    Script=Cyrillic,
    Language=Serbian,
    Style=Alternate
  }
}