# biblatex: why no comma after abbreviated shorttitle?

Sorry, this is only a minor question, but I just realised for the first time that when you cite a bibliographic item which has no shortitle, then -- using style=verbose -- you usually get (apart from the very first fullcite):

Name, In Physica, p.12.

When this item has an abbreviated shorttitle that ends with a dot, however, you get the following:

Name, In Phys. p.12. [No comma after shorttitle/before page!]

I usually omit the "p." for "page", so my result is:

Name, In Phys. 12.

I would like to get:

Name, In Phys., 12.

## MWE

% !TEX TS-program = lualatexmk
\documentclass[12pt, a4paper, DIV=calc]{scrartcl}

\usepackage{fontspec}
\setmainfont[Ligatures=TeX]{Times New Roman}

\usepackage[    style=verbose,
abbreviate=false,
url=false,
backrefstyle=three,
backend=biber
]{biblatex}
\DeclareFieldFormat{postnote}{#1}       % postnotes without p. and pp.

\usepackage{filecontents}

\begin{filecontents}{\jobname.bib}
@book{without:shorttitle,
author = {Author W. Name},
year = {2000},
title = {In Physica},
publisher = {Publisher},
}
@book{with:shorttitle,
author = {Author W. Name},
year = {2000},
title = {In Physica},
shorttitle = {In Phys.},
publisher = {Publisher},
}
\end{filecontents}

\begin{document}

''First citation without shorttitle.''\footcite[12]{without:shorttitle}

''Second citation without shorttitle.''\footcite[12]{without:shorttitle}

''First citation with shorttitle.''\footcite[12]{with:shorttitle}

''Second citation with shorttitle.''\footcite[12]{with:shorttitle}

\end{document}

-
I am sorry, but i fail to recognize your question, would you be so kind as to clarify it further? –  brian-ammon Mar 18 '13 at 12:25
Can you please add a MWE to play with? –  egreg Mar 18 '13 at 12:33
@egreg : I added an MWE. In making the MWE, I realized that my question concerns only cases of abbreviated shorttitles that end with a dot. I still would like to know if I am the only one who thinks that there should be a comma. –  ClintEastwood Mar 18 '13 at 12:58

Adding \isdot to the definition of the citetitle field format seems to do the trick.

\DeclareFieldFormat{citetitle}{\mkbibemph{#1\isdot}}
\DeclareFieldFormat
[suppbook,suppcollection,suppperiodical]
{citetitle}{#1\isdot}


An alternative solution is to replace the literal period with \adddot in the .bib file:

@book{with:shorttitle,
author = {Author W. Name},
year = {2000},
title = {In Physica},

nice idea. What about adding \isdot to the shorttitle-field? (e.g., shorttitle = {In Phys.\isdot}), instead of changing a global definition? What would you prefer? –  ClintEastwood Mar 18 '13 at 13:18
@ClintEastwood I added an alternative solution. Personally, I'd change the .bib file in any case; I'd still like an explanation why \isdot is absent from some instances of the citetitle field format. –  lockstep Mar 18 '13 at 13:24