# Colon (:) instead of period (.) after author with biblatex, alphabetic

With `biblatex`, `alphabetic` style, I have

<author>. <title>

But I want to have a colon ":" instead of the period "." after the author:

<author>: <title>

What do I have to change?

• I refurbished your question a bit, hope you don't mind. – doncherry Jan 7 '12 at 15:20

``````\renewcommand{\labelnamepunct}{\addcolon\space}
``````

(This is better than `\renewcommand{\labelnamepunct}{:\addspace}`, as remarked by domwass.)

Update

The `\labelnamepunct` command is currently deprecated and the context dependent

``````\DeclareDelimFormat[bib]{nametitledelim}{\addcolon\space}
``````

should be used. However, old styles may still be using `\labelnamepunct`, so the original answer has been kept. (Thanks to moewe for recalling to update.)

• It would be better to use `\renewcommand{\labelnamepunct}{\addcolon\space}`, because then unintended whitespace before the colon will be deleted. – domwass Sep 19 '11 at 12:09
• @domwass Right; all those `\add...` commands in biblatex are confusing. – egreg Sep 19 '11 at 12:13
• This works with `verbose` style as well. Question: The `\labelnamepunct` will only be executed after the author entry and nowhere else? – doncherry Jan 7 '12 at 15:23
• @doncherry `biblatex` defines many "punct" commands, so I guess this is specialized for that purpose. – egreg Jan 7 '12 at 15:47
• @ItsmeJulian Do you think there is a global option to begin with? – egreg May 26 '16 at 14:00