Ref-section not working for Overleaf

[happypanda94]

Hello,

I generally use Overleaf to write my articles. I am submitting to a journal that provide its own csl file, I am using the following commands:

`
\usepackage{citation-style-language} % your CSL package

\cslsetup{style = journal}

% \cslsetup{ref-section = section+}

\addbibresource{references.bib, getwriting.bib}
`

The journal also requires the references for the main and supplementary files to be separate, so I was thinking about using the ref-section argument to separate their reference lists. However, whenever I try to pass ref-section as an argument, I get the following error:

LaTeX Error: The key 'csl/ref-section' is unknown and is being ignored.

In more detail:
`
\TeXr@lab=\toks22
) (/usr/local/texlive/2024/texmf-dist/tex/latex/citation-style-language/citation-style-language.sty
Package: citation-style-language 2024-03-12 v0.4.8 Citation Style Language for LaTeX
(/usr/local/texlive/2024/texmf-dist/tex/latex/l3packages/l3keys2e/l3keys2e.sty
Package: l3keys2e 2024-03-14 LaTeX2e option processing using LaTeX3 keys
)
\l__csl_ccf_iow=\write4

\openout4 = output.ccf
(/usr/local/texlive/2024/texmf-dist/tex/latex/citation-style-language/citation-style-language-init.sty) (/usr/local/texlive/2024/texmf-dist/tex/latex/citation-style-language/citation-style-language-data.sty) (/usr/local/texlive/2024/texmf-dist/tex/latex/citation-style-language/citation-style-language-cite.sty
\l__csl_citation_count_int=\count281
\g__csl_pseudo_note_index_int=\count282
) (/usr/local/texlive/2024/texmf-dist/tex/latex/citation-style-language/citation-style-language-bib.sty
\g__bib_list_index_int=\count283
\l__csl_bib_hang_dim=\dimen155
\l__csl_url_big_break_penalty_int=\count284
\l__csl_url_break_penalty_int=\count285
\l__csl_url_num_penalty_int=\count286
\l__csl_url_uc_penalty_int=\count287
\l__csl_url_lc_penalty_int=\count288
\l__csl_url_big_muskip=\muskip17
\l__csl_url_num_muskip=\muskip18
\l__csl_url_uc_muskip=\muskip19
\l__csl_url_lc_muskip=\muskip20
) (/usr/local/texlive/2024/texmf-dist/tex/latex/citation-style-language/citation-style-language-compatible.sty))

! LaTeX Error: The key 'csl/ref-section' is unknown and is being ignored.

For immediate help type H .
...

l.20 \cslsetup{ref-section = section+}

The module 'csl' does not have a key called 'csl/ref-section'.
Check that you have spelled the key name correctly.

`

I am using LuaLatex with 2024 Tex Live as this seems to be the only one that supports the citation-style-language package.

Can you please help me with this one? The other modules I am using are as follows:

`
\documentclass[nonatbib,12pt]{elsarticle}

\usepackage{textcomp}
\usepackage{hyperref}
\usepackage{multirow}
\usepackage{makecell}
\usepackage{graphicx}
\usepackage{array}

`

I cannot even use other existing commands, such as \refsection or \bibunits, because they all throw incompatibility errors with the csl package.

Is there a way to solve this issue?

[zepinglee]

The the refsection feature of citation-style-language was added since v0.6.0 2024-07-31 but the package on Overleaf (2024-03-12 v0.4.8) is outdated. You can load the latest version by copying all of the .lua and .sty files in citeproc/ and latex/ directories to your project along with the main .tex document. I know there are many files and look messy but I don't know other way to load the latest version.