Probleme beim Erstellen eines eigenen Bibliographystyle

[pferdefreund]

Hallo!

Ich habe nach den strengen Vorgaben meiner Uni versucht einen eigenen Stil zu erstellen. Leider komme ich momentan nicht mehr weiter.

Problem 1: Warum erscheint im Literaturverzeichnis vor dem Textzitat (z.B. (1)) ein Punkt ab dem zweiten Eintrag?

Problem 2: Umlaute im Literaturverzeichnis werden nicht korrekt angezeigt. {"u} hilft auch nicht weiter.

Vielen Dank im Voraus!

%LaTeX Dokument
\documentclass[parskip=full]{scrreprt}
\usepackage[ngerman]{babel}
\usepackage[babel, german=quotes]{csquotes}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}

\usepackage{acronym}
\usepackage[backend=biber, style=meinstil]{biblatex}
\DeclareLanguageMapping{ngerman}{ngerman-apa} 
\addbibresource{literatur.bib}
\defbibheading{lit}{\chapter{Literaturverzeichnis}}
\begin{document} 

\chapter{Einleitung}

Hier steht ein Text \cite{Muller2005} \\
bla bla \cite{Moller2005}
und noch mehr Text \cite{Müller2000} \\

\printbibliography[heading=lit]
\end{document}

 % Literatur
@article{Bassi2005,
    author  = {C Müller and F Meyer and H Schmitt and T Moll and E Wing and O Troll and P Myer},
    title   = {Hier steht der Titel.},
    journal = {Journal},
    volume  = {138},
    year    = {2005},
    pages   = {8-13},
}

@article{Müller2000,
    author  = {MW Müller},
    title   = {Titel des Dokumentes.},
    journal = {Journal},
    volume  = {87},
    year    = {2000},
    pages   = {883–889},
}

% meinstil.bbx

\ProvidesFile{meinstil.bbx}[2013/10/30\space v6.4\space APA biblatex references style]
\RequireBiber[3]
\RequireBibliographyStyle{standard}

\newcommand{\maxprtauth}{20}
\DeclareBibliographyOption{apamaxprtauth}{%
  \ifstrempty{#1}
    {}
    {\renewcommand{\maxprtauth}{#1}}}

\ExecuteBibliographyOptions{labelnumber}

\DeclareNameAlias{author}{default}
\DeclareNameAlias{editor}{default}
\DeclareNameAlias{translator}{default}

\DeclareFieldFormat{bibentrysetcount}{{\mknumalph{#1}}}
\DeclareFieldFormat{labelnumberwidth}{\mkbibbrackets{#1}}


\defbibenvironment{bibliography}
  {\list
     {\printtext({%
	\printfield{prefixnumber}%
	\printfield{labelnumber})}} %
     {\setlength{\labelwidth}{\labelnumberwidth}%
      \setlength{\leftmargin}{\labelwidth}%
      \setlength{\labelsep}{\biblabelsep}%
      \addtolength{\leftmargin}{\labelsep}%
      \setlength{\itemsep}{\bibitemsep}%
      \setlength{\parsep}{\bibparsep}}%
      }
  {\endlist}
  {\item}

\newcommand{\apanum}[1]{\ifrmnum{#1}{\rmntonum{#1}}{#1}}


\newcommand*{\mkbibrangeapalong}[1]{%
  \ifthenelse{\equal{#1}{url}}
    {\printtext{%
     \mkbibdateapalongmdy{#1year}{#1month}{#1day}%
     \iffieldundef{#1endyear}%
       {}%
       {\iffieldequalstr{#1endyear}{}% open-ended range?
         {\mbox{\bibdatedash}}
         {\bibdatedash%
          \iffieldsequal{#1year}{#1endyear}%
            {\iffieldsequal{#1month}{#1endmonth}%
              {\iffieldsequal{#1day}{#1endday}%
                {}%
                {\mkbibdateapalongmdy{}{}{#1endday}}}%
              {\mkbibdateapalongmdy{}{#1endmonth}{#1endday}}}%
            {\mkbibdateapalongmdy{#1endyear}{#1endmonth}{#1endday}}}}}}
    {\printtext{%
     \mkbibdateapalong{#1year}{#1month}{#1day}%
     \iffieldundef{#1endyear}%
       {}%
       {\iffieldequalstr{#1endyear}{}% open-ended range?
         {\mbox{\bibdatedash}}
         {\bibdatedash%
          \iffieldsequal{#1year}{#1endyear}%
            {\iffieldsequal{#1month}{#1endmonth}%
              {\iffieldsequal{#1day}{#1endday}%
                {}%
                {\mkbibdateapalong{}{}{#1endday}}}%
              {\mkbibdateapalong{}{#1endmonth}{#1endday}}}%
            {\mkbibdateapalong{#1endyear}{#1endmonth}{#1endday}}}}}}}


% Only for DATE as only \printdateextra is used
\newcommand*{\mkbibrangeapalongextra}[1]{%
    \printtext{%
     \mkbibdateapalongextra{#1year}{#1month}{#1day}%
     \iffieldundef{#1endyear}%
       {}%
       {\iffieldequalstr{#1endyear}{}% open-ended range?
         {\mbox{\bibdatedash}}
         {\bibdatedash%
          \iffieldsequal{#1year}{#1endyear}%
            {\iffieldsequal{#1month}{#1endmonth}%
              {\iffieldsequal{#1day}{#1endday}%
                {}%
                {\mkbibdateapalongextra{}{}{#1endday}}}
              {\mkbibdateapalongextra{}{#1endmonth}{#1endday}}}
            {\mkbibdateapalongextra{#1endyear}{#1endmonth}{#1endday}}}}}}

\DeclareSortingScheme{apa}{
  \sort{
    \field{presort}
  }
  \sort[final]{
    \field{sortkey}
  }
  \sort{
    \field{sortname}
    \field{author}
    \field{editor}
    \field{translator}
    \field{writer}
    \field{director}
    \field{producer}
    \field{execproducer}
    \field{origauthor}
    \field{sorttitle}
    \field{title}
  }
  \sort{
    \field{sortyear}
    \field{year}
    \field{pubstate}
  }
  \sort{
    \field{sorttitle}
    \field{title}
  }
  \sort{
    \field[padside=left,padwidth=4,padchar=0]{volume}
    \literal{0000}
  }
}

\DeclareLabeldate{%
  \field{pubstate}
  \field{date}
  \literal{nodate}
}


\ExecuteBibliographyOptions{labeldate=true,%
                            sorting=apa,%
                            autocite=inline,%
                            backref=true,%
                            pagetracker=true,%
                            useprefix=true,%
                            usetranslator=true,%
                            uniquelist=minyear,%
                            uniquename=full,%
                            citetracker=true,%
                            maxcitenames=2,%
                            mincitenames=1,%
                            maxbibnames=7,%
                            minbibnames=6,%
                            abbreviate=true,%
                            mincrossrefs=999,%
                            date=apalong,%
                            datelabel=apalong,%
                            origdate=apalong,%
                            urldate=apalong,%
                            eventdate=comp}



\newbool{apa:backref}
\DeclareBibliographyOption{apabackref}{%
  \ifstrequal{#1}{true}
    {\global\booltrue{apa:backref}}
    {\global\boolfalse{apa:backref}}}



\DeclareNameAlias{default}{apaauthor}

\DeclareNameFormat{apaauthor}{%
  \ifthenelse{\value{listcount}=\maxprtauth\AND\value{listcount}<\value{listtotal}}
    {\addcomma\addspace\ldots\addspace}
    {\ifthenelse{\value{listcount}>\maxprtauth\AND\value{listcount}<\value{listtotal}}
      {}
      {\iffieldequalstr{doubtfulauthor}{true}
        {\mkbibbrackets{\usebibmacro{name:apa:last-first}{#1}{#3}{#4}{#5}{#7}?}}
        {\usebibmacro{name:apa:last-first}{#1}{#3}{#4}{#5}{#7}}}}%
    \ifthenelse{\value{listcount}=\value{listtotal}}%
      {\ifmorenames{\andothersdelim\bibstring{andothers}}{}}{}}

\renewbibmacro*{author}{%
  \ifnameundef{author}
    {\usebibmacro{labeltitle}}
    {\printnames[apaauthor][-\value{listtotal}]{author}%
     \setunit*{\addspace}%
     \printfield{nameaddon}%
     \ifnameundef{with}
       {}
       {\setunit{}\addspace\mkbibparens{\printtext{\bibstring{with}\addspace}%
        \printnames[apaauthor][-\value{listtotal}]{with}}
        \setunit*{\addspace}}}%
  \newunit\newblock%
  \usebibmacro{labelyear+extrayear}}

%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% (APA 6.27) References section delimiters are ampersands, not " and "
%            Needs to be in this hook otherwise it sets this for all
%            citations too.
% (APA 6.27) Use blank for long lists
% (APA 4.03) Serial comma for lists of three or more

\AtBeginBibliography{%
  \renewcommand*{\multinamedelim}{~,\space}%
  \renewcommand*{\finalnamedelim}{~,\space}%
}

%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% (APA 6.28) Use "nodate" bibstring for references with no year
%            Months and days go into parenthesis with year, if set
% (APA 6.29) Issue goes where month normally goes if it
%            is set.

% Make sure endmonth gets an expansion too
\DeclareFieldFormat{endmonth}{\mkbibmonth{#1}}

\newbibmacro*{monthorissue}{%
  \iffieldundef{issue}
    {\iffieldundef{month}
      {}
      {\addcomma\space\printfield{month}%
      \iffieldundef{endmonth}{}{/\printfield{endmonth}}}}
    {\addcomma\space\printfield{issue}}}

\newbibmacro*{labelyear+extrayear}{%
  \iffieldundef{labelyear}
    {\iffieldundef{origyear}
      {}
      {\printtext[yearorunkyear]{\printfield[noformat]{origyear}}}}%
    {\printtext[yearorunkyear]{\printdateextralabel}}}

\DeclareFieldFormat{yearorunkyear}{%
  \ifthenelse{\iffieldequalstr{doubtfuldate}{true}}
    {\mkbibbrackets{ca\adddot\addspace#1}}
    {\mkbibparens{#1}}}

%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% (APA 6.29) General format of titles.
%            Ugly Chicago-style lowercasing of English titles

\DeclareFieldFormat{apacase}{\MakeSentenceCase*{#1}}

\DeclareFieldFormat{issuetitle}{#1\isdot}
\DeclareFieldFormat{title}{#1\isdot}
\DeclareFieldFormat{origtitle}{\MakeSentenceCase*{#1}\isdot}
\DeclareFieldFormat[article]{title}{#1\isdot}
\DeclareFieldFormat[article]{origtitle}{\MakeSentenceCase*{#1}\isdot}
\DeclareFieldFormat{journaltitle}{#1\isdot}
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% (APA 7.01 Example 10) Newspapers have prefix for pages.

\DeclareFieldFormat[newsarticle]{pages}{%
    \DeclareNumChars{.abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ}%
    \mkpageprefix{#1}%
    \DeclareNumChars{.}}

\DeclareFieldFormat[newsarticle]{newspaper}{#1}
\DeclareFieldFormat[newsarticle]{entrysubtype}{\mkbibbrackets{#1}}
\DeclareFieldFormat[newsarticle]{title}{#1}
\DeclareFieldFormat[article]{pages}{#1}

\newbibmacro*{newspaper}{%
  \printfield{newspaper}
  \setunit{\addcomma\space}}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% (APA 6.30) Commas between title and volume for articles

\renewbibmacro*{journal+issuetitle}{%
  \usebibmacro{journal}%
  \setunit*{\addspace}%
  \printfield{number}%
  \setunit{\addspace}\newblock
  \usebibmacro{issuename}%
  \newunit}

\newbibmacro*{issuename}{%
  \iffieldundef{issuetitle}
    {}
    {\printtext[issuetitle]{%
       \printfield[noformat]{issuetitle}%
       \setunit{\subtitlepunct}%
       \printfield[noformat]{issuesubtitle}}}}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% (APA 6.27) Name format. Don't capitalise prefixes
% (APA 6.27) Full name disambiguation using brackets

% #1 = last name
% #2 = first name
% #3 = first name (initials)
% #4 = name prefix, a.k.a. 'von part'
% #5 = name affix, a.k.a. 'junior part'
\makeatletter
\def\MKbibnamefirst#1{\expandafter\mkbibnamefirst@i#1..\@nil}
\def\mkbibnamefirst@i#1.#2.#3\@nil{#1}

\newbibmacro*{name:apa:last-first}[5]{%
  \ifuseprefix
    {\usebibmacro{name:delim}{#2#1}%
     \usebibmacro{name:hook}{#2#1}%
     \ifblank{#3}{}{%
       \mkbibnameprefix{#4}%
       \ifpunctmark{'}{}{\addhighpenspace}}%
     \mkbibnamelast{#1\isdot}%
     \ifblank{#2}{}{\addlowpenspace\mkbibnamefirst{#3}\isdot%
                    \ifthenelse{\value{uniquename}>1}
                      {\addspace\mkbibbrackets{#2}}
                      {}}%
     \ifblank{#5}{}{\addcomma\addlowpenspace\mkbibnameaffix{#5}\isdot}}
    {\usebibmacro{name:delim}{#1}%
     \usebibmacro{name:hook}{#1}%
     \mkbibnamelast{#1}\isdot
     \ifblank{#2#4}{}{\addcomma}%
     \ifblank{#2}{}{\addlowpenspace\mkbibnamefirst{#3}%
                    \ifthenelse{\value{uniquename}>1}
                      {\addspace\mkbibbrackets{#2}}
                      {}}%
     \ifblank{#4}{}{%
       \addhighpenspace\mkbibnameprefix{#4}%
       \ifpunctmark{'}{}{\addhighpenspace}}%
     \ifblank{#5}{}{\addcomma\addlowpenspace\mkbibnameaffix{#5}\isdot}}}
     


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% (APA 6.29) Special journal issues

\DeclareFieldFormat[periodical]{title}{#1\isdot}
\DeclareFieldFormat[periodical]{issuetitle}{\mkbibemph{#1}\isdot}

\renewbibmacro*{periodical}{%
  \iffieldundef{title}
    {}
    {\printtext[title]{%
       \printfield[apacase]{title}%
       \setunit{\subtitlepunct}%
       \printfield[apacase]{subtitle}}}}

\renewbibmacro*{title+issuetitle}{%
  \usebibmacro{periodical}%
  \newunit
  \usebibmacro{issue}%
  \setunit*{\addcomma\addspace}%
  \setunit{\addcomma\space}}




%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Hacky bits to suppress final period in some cases.
% * If there is an ORIGYEAR field (APA 7.02:21)
% * Unless there is a RELATED and ADDENDUM
\newbibmacro*{apa:finpunct}{%
  \iffieldundef{origyear}
    {\ifboolexpr{
       test {\iffieldundef{addendum}}
       and
       test {\iffieldundef{related}}}
     {}
     {\renewcommand*{\finentrypunct}{\relax}}}
    {\renewcommand*{\finentrypunct}{\relax}}}



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% (APA 7.x) General type layouts

\DeclareBibliographyDriver{article}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \usebibmacro{author/editor}%
  \setunit{\addspace}\newblock

  \usebibmacro{title}%
  \newunit\newblock{\newline}
  \usebibmacro{journal+issuetitle}%
  \setunit{\addspace}%
    \printfield{volume}%
   \setunit{\addcolon\addspace}%
  \printfield{pages}%
   \newunit\newblock{\newline}
  }

%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Wrapper for backrefs

\newbibmacro{apa:pageref}{%
  \ifbool{apa:backref}{\usebibmacro{pageref}}{}}



\endinput