% =====================================================================
%% This is file `biblatex-cse.cbx',
%%
%% A Council of Science Editors (CSE) Name–Year bibliography style
% =====================================================================
%%
%% Copyright (C) 2024–25 by João Lourenço <joao.lourenco@fct.unl.pt>
%%
%% This file may be distributed and/or modified under the conditions of
%% the LaTeX Project Public License, either version 1.3c of this license
%% or (at your option) any later version. The latest version of this
%% license is in:
%%
%%    http://www.latex-project.org/lppl.txt
%%
%% and version 1.3c or later is part of all distributions of LaTeX
%% version 2006/05/20 or later.
%%
\def\fileversion{2.0.0}
\def\filedate   {2025/11/06}
\edef\filename  {biblatex-cse}

\ProvidesFile{\filename.cbx}[%
  \filedate\  v\fileversion (João M. Lourenço) CSE Name–Year bibliography style]

\RequireCitationStyle{authoryear} % start from Author-Year format

% Two key tweaks:
% 1) Use "and" (not comma) before the last name in in-text citations.
% 2) Page/section postnotes appear as ", 35–47" (no "p.")

% --- In-text page/section locators: ", 35–47" (no "p." or "pp.")
% 1) Ensure the field itself is printed raw

% format postnotes
\DeclareFieldFormat{postnote}{#1}
\DeclareFieldFormat{multipostnote}{#1}

% 2) Control how the postnote is attached to the citation
% Postnote formatting: comma + space + bare numbers (no "p./pp.")
\DeclareDelimFormat{postnote}{\addcomma\space}

% 3) Override the macro so it doesn't re-introduce page prefixes
\renewbibmacro*{postnote}{%
  \iffieldundef{postnote}
    {}
    {\printtext{\addcomma\space\printfield{postnote}}}}


% Final name delimiter in citations:
\DeclareDelimFormat{finalnamedelim}{\addspace and\space}
\DeclareDelimFormat{multinamedelim}{\addcomma\space}

% Ensure "et al" string has no final period (kept in .bbx too)
\DefineBibliographyStrings{english}{
  andothers = {et\addabbrvspace al}
}