french quote for blockquote and italics foreignquote

Question

I try to generate a correct blockquote and foreignblockquote which start with « and end with »

What i already have :

« Test in french » (citation)

« Test in english » (citation)

What i want with blockquote/foreignblockquote :

« Test
in
french » (citation)

«Test
in
english » (citation)

Here the mwe :

% !TEX encoding =  UTF-8 Unicode
% -*- program: xelatex -*-
\documentclass[a4paper, 11pt,twoside, openright]{memoir}
\usepackage{polyglossia}
\setdefaultlanguage{french}
\setotherlanguage{english}
\setotherlanguage[variant=ancient]{greek}
\setotherlanguage{latin}
\usepackage[autostyle=true,french=guillemets,maxlevel=3]{csquotes}
%% QUOTE FRENCH ITALICS
\renewcommand{\mktextquote}[6]{%
  #1%
  \iflanguage{english}{\itshape}{}% ADDED
  #2#4#3#6#5%
}

\renewcommand{\mkblockquote}[4]{%
  \iflanguage{english}{\itshape}{}% ADDED
  #1#2#3#4%
}

\DeclareQuoteStyle{english}
  {\mkfrenchopenquote{\guillemotleft}\itshape}
  {\itshape\mkfrenchclosequote{\guillemotright}}
  {\textquotedblleft\itshape}
  {\itshape\textquotedblright}

\begin{document}

    \enquote{Test in french}

    \blockquote{Test \\ in \\ french}

    \foreignquote{english}{Test in english}

    \foreignblockquote{english}{Test \\ in \\ english}

\end{document}

Answer 1

Your english quote style swarms with \itshapes that catch everything but the opening quotation mark. This is bizarre, and it's also making the conditionals you use redundant.

I'm probably missing some point about your use case. However, here is some leaner code that solves your problem:

\usepackage[autostyle,maxlevel=3]{csquotes}

\renewcommand{\mkblockquote}[4]{%
  \openautoquote#1\closeautoquote#2#3#4} % <--------- HERE IS THE FIX

\DeclareQuoteStyle{english}
  {\itshape\mkfrenchopenquote{\guillemotleft}}
  {\mkfrenchclosequote{\guillemotright}}
  {\textquotedblleft}
  {\textquotedblright}

The crucial part is the renewal of \mkblockquote where I introduced \openautoquote and \closeautoquote around #1.