Capitalization (\uppercase{...}) is controlled via \uccode so that
this should help:
\uccode`\i=`\İ
There is a Turkish module in polyglossia, so most probably the
following should solve all Turkish typographical features:
\usepackage{polyglossia}
\setdefaultlanguage{turkish}
2013/5/30 Alessandro Ceschini <alessandroceschini...@gmail.com>:
> In a document like this:*
> ****
> ***
>
> |\documentclass*[*|*|a4paper, 12p|*|t]{boo|*|k}
> \usepackage{fancyhdr}
> \pagestyle{fancy}
> \usepackage{fontspec}
> \defaultfontfeatures{Language=Turkish, Mapping=tex-text}
> \setmainfont{Linux Libertine G}
> \usepackage{polyglossia}
> \setmainlanguage{turkish}
> \usepackage{xunicode}
> \usepackage{xltxtra}
> \usepackage{bookmark}
> \usepackage{epigraph}
>
> \begin{document}
>
> \chapter{Birinci}
>
> \section{İkinci}
>
> \end{documen|*|t||}|
> *
> *
>
> **Now, what's in the header is small caps, right? So, it gets capitalized,
> but the problem is that "i" gets capitalized in Turkish as dotted I, that
> is: "İ" (U+0130) and this, XeLaTeX doesn't do. Is there a way to enjoin it
> to do so?
>
> **
> --
> Alessandro Ceschini
>
>
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--
Zdeněk Wagner
http://hroch486.icpf.cas.cz/wagner/
http://icebearsoft.euweb.cz
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