Suppressing page range of the reference

I'm using biblatex-gost package, gost-footnote style. If I'm citing some bibliography item for which the pages field is filled (usually an article, book chapter, materials in conference proceedings...) and at the same time specifying a particular page as a postnote argument, the reference in the footnote includes both the page range of the article (or another type of item) in a journal and the page I specified. According to GOST, in cases like this the page range should be suppressed. In other words, I want to get

Author Name. Article Title // Journal name. Year. Vol. 1, no 2. P. 10

Author Name. Article Title // Journal name. Year. Vol. 1, no 2. Pp. 5-15. P. 10.

MWE:

\documentclass[12pt,a4paper]{extreport}

\usepackage{cmap}
\usepackage[T2A]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage[english,russian]{babel}
\usepackage{hyperref}
\frenchspacing

\begin{filecontents}{biblio.bib}
@article{cummings2004argument,
langid = {english},
title={Argument as Cognition: A Putnamian Criticism of Dale Hample’s Cognitive Conception of Argument},
author={Cummings, Louise},
journal={Argumentation},
volume={18},
number={3},
pages={331--348},
year={2004},
publisher={Springer}
}
\end{filecontents}

\usepackage[backend=biber,bibencoding=utf8,sorting=nyt,maxcitenames=2,maxbibnames=999,style=gost-footnote,language=auto,autolang=other,bibstyle=gost-numeric,opcittracker=false,pagetracker]{biblatex}
\usepackage[autostyle]{csquotes}

\begin{document}

some text some text some\footcite[P.~335]{cummings2004argument} text some text some text some text

\printbibliography
\end{document}


biblatex-gost already does that for you, if you let it set the "P.~" prefix automatically. Use
\footcite[335]{sigfridsson}

instead of adding the prefix manually (\footcite[P.~335]{sigfridsson}).
This is controlled by the citepages option in biblatex-gost (this option is also available in the verbose-flavoured standard styles), where it is set to omit, i.e. it omits the pages field if the postnote contains a page reference. Other possible options are permit where the pages field is always printed; suppress always suppresses the pages field; and separate, where the postnote is separated from the pages field by "especially" if it contains a page number. See the verbose style documentation for examples.
• I looked through the biblatex documentation and couldn't find any mention of it. Yet it warks :) Thanks a lot! – David Jul 6 '16 at 16:35
• @David Yes, the option citepages is only properly explained in the style docus (examples), the biblatex manual only touches on the subject very, very briefly. – moewe Jul 6 '16 at 16:44