bold italic text in latex
documentclass{article}
makeatletter
DeclareRobustCommandbfseriesitshape{%
not@math@alphabetitshapebfseriesrelax
fontseriesbfdefault
fontshapeitdefault
selectfont
}
makeatother
DeclareTextFontCommand{textbfit}{bfseriesitshape}
begin{document}
scshape % now the current font shape is small caps
textit{textbf{f}}f
textbf{textit{f}}f %% causes LaTeX Font Warning
{fontseriesbfdefaulttextit{f}f}
textbfit{f}f
end{document}