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How can I combine using latexmk with biber --isbn-normalise?

Based on https://tex.stackexchange.com/a/331508/36296 I tried to add 

$biber='biber --isbn-normalise %O %S'

to .latexmkrc but this resulted in the following error:

Scalar found where operator expected at (eval 7) line 2, near "1
$biber"
    (Missing operator before 
$biber?)
Latexmk: Initialization file '/Users/<username>/.latexmkrc' gave an error:
     syntax error at (eval 7) line 2, near "1
     $biber"

Latexmk: Stopping because of problem with rc file

I am using biber version: 2.8 (beta)

My use case is to have this for one file, so adding some option to the call of latexmk -<some_magick_option> % or \usepackage[some_magick_option]{biblatex} would be fine, it does not have to be globally set in the .latexmkrc file.

samcarter_is_at_topanswers.xyz
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  • Aren't you missing a ; at the end of that line? (Perl syntax) – daleif Jun 19 '17 at 16:46
  • You can add it in an rc file can call it via -r myconf.rc the syntax is the same as for latexmkrc but is just not global. I think the cited page is in error, since the confs are al Perl variable specifications, the specification should end with a semi colon – daleif Jun 19 '17 at 16:53
  • @daleif Thank you so much! The ; solves my problem and the config file is a very good idea. Can you please convert your first comment into an answer? – samcarter_is_at_topanswers.xyz Jun 19 '17 at 18:36

1 Answers1

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Latexmk is written in Perl. Thus an assignment like this should be ended with a ;

Additionally you can run a local version of latexmkrc via the -r <filename> option, handy for setting that are only needed for a single project

My guess is that the cited question is misleading because it is missing the trailing semi colons

daleif
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