# Modify the last-name first-name separator in biblatex's authortitle

Using the example below, how could I modify the separator between last name and the initial? Currently this is a comma e.g. Fox, P. and it should be just a space: Fox P.

And a similar problem: How could I remove the period behind the initial?

\RequirePackage{filecontents}
\begin{filecontents}{sample.bib}
@ARTICLE{liu:11,
author = {Peter Fox and Richard Rabbit and Franc Bird},
title = {Animals are the better humans},
journal = {Horse and Hound},
year = {2011},
volume = {10},
pages = {11--15}
}
\end{filecontents}

\documentclass[a4paper,ngerman]{scrartcl}
\usepackage{babel}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{csquotes}
\usepackage[style=authortitle,firstinits=true]{biblatex}

\bibliography{sample}
\begin{document}
Samplecite~\cite{liu:11}.

\printbibliography
\end{document}


Current status

-
@Vivi: It's great that you're putting so much work into improving questions, but it's leading to the front page being filled with old questions. I think there's an unwritten policy of not having more than five minorly corrected questions on the front page at the same time. –  Jake Jun 21 '11 at 5:49
@Jake: sorry, I wasn't aware. –  Vivi Jun 22 '11 at 2:44

put it right after loading the package biblatex. If I understand it right, then you only want to strip the dot from the first initial.

\makeatletter
\def\MKbibnamefirst#1{\expandafter\mkbibnamefirst@i#1..\@nil}
\def\mkbibnamefirst@i#1.#2.#3\@nil{#1}

\renewbibmacro*{name:last-first}[4]{%
\ifuseprefix
{\usebibmacro{name:delim}{#3#1}%
\usebibmacro{name:hook}{#3#1}%
\ifblank{#3}{}{%
\ifcapital
{\mkbibnameprefix{\MakeCapital{#3}}\isdot}
{\mkbibnameprefix{#3}}%
\mkbibnamelast{#1}\isdot
{\usebibmacro{name:delim}{#1}%
\usebibmacro{name:hook}{#1}%
\mkbibnamelast{#1}\isdot

@Martin: the dot at the initial has to be stripped from the data which is returned by biber or bibtex. If you really know that every bib entry has correct author names it can be done easier. But in this case it also recognizes empty author entries. In this case there is no dot and the macro would fail. with \@nil I can define an end of a parameter sequence. If your have no name then #1 is empty and returned. –  Herbert Jan 11 '11 at 10:57