I'm trying to customize the bibliography for a presentation. I'm running into trouble with the punctuation after the title. As a MWE, I wrote the following biblatex.cfg file:

\ExecuteBibliographyOptions{giveninits=true, uniquename=false}




There should be a period after the title. However, Beamer inserts a comma. Other classes (e.g., scrartcl) do insert a period after the title. Beamer correctly inserts a period between the publisher and the note though.

I tried modifying the bibmacro title, removing all instances of \newunit, to no avail.

Does anyone know what's going on?


This has to do with how beamer patches some of biblatex's macros to include the colouring.

In beamerbaselocalstructure.sty we find

        \newblock\usebeamercolor[fg]{bibliography entry note}}{}{}}

This shows that the title macro is changed to always print a \newunitpunct after the title (not even in a \setunit, the punctuation is printed immediately).

You can fix this by resetting the title macro in \AtBeginDocument to its original form from biblatex.def and adding the colouring macros.

    \usebeamercolor[fg]{bibliography entry title}%
      test {\iffieldundef{title}}
      test {\iffieldundef{subtitle}}
    \newblock\usebeamercolor[fg]{bibliography entry note}}

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