%
% Copyright (c) 2021-2025 Zeping Lee
% Released under the MIT License.
% Repository: https://github.com/zepinglee/citeproc-lua
%
% ## Citation commands
\DeclareDocumentCommand \cite { s o o m }
{
\IfBooleanTF {#1}
{
\bool_if:NTF \l__csl_note_bool
{ \__csl_cite_in_text:nnnn {#2} {#3} {#4} { } }
{ \__csl_cite_in_text:nnnn {#2} {#3} {#4} { suppress-author } }
}
{
\bool_if:NTF \l__csl_note_bool
{ \__csl_cite_note:nnnn {#2} {#3} {#4} { } }
{ \__csl_cite_in_text:nnnn {#2} {#3} {#4} { } }
}
}
\NewDocumentCommand \parencite { s o o m }
{
\IfBooleanTF {#1}
{
\bool_if:NTF \l__csl_note_bool
{ \__csl_cite_in_text:nnnn {#2} {#3} {#4} { } }
{ \__csl_cite_in_text:nnnn {#2} {#3} {#4} { suppress-author } }
}
{ \__csl_cite_parens:nnn {#2} {#3} {#4} }
}
\NewDocumentCommand \citep { o o m }
{ \__csl_cite_parens:nnn {#1} {#2} {#3} }
\NewDocumentCommand \textcite { o o m }
{ \__csl_text_cite:nnn {#1} {#2} {#3} }
\NewDocumentCommand \citet { o o m }
{ \__csl_text_cite:nnn {#1} {#2} {#3} }
\NewDocumentCommand \footcite { o o m }
{ \__csl_cite_note:nnnn {#1} {#2} {#3} { } }
% \cites[⟨prenote⟩][⟨postnote⟩]{⟨key⟩}...[⟨prenote⟩][⟨postnote⟩]{⟨key⟩}
\NewDocumentCommand \cites { }
{ \__csl_cites: }
\NewDocumentCommand \citeauthor { o o m }
{ \__csl_cite_in_text:nnnn {#1} {#2} {#3} { author-only } }
\NewDocumentCommand \citeyear{ o o m }
{ \__csl_cite_in_text:nnnn {#1} {#2} {#3} { cite-year } }
% Suppresses the author (from `natbib`).
\NewDocumentCommand \citeyearpar { o o m }
{ \__csl_cite_in_text:nnnn {#1} {#2} {#3} { suppress-author } }
\NewDocumentCommand \fullcite { o o m }
{ \__csl_cite_in_text:nnnn {#1} {#2} {#3} { full-cite } }
\seq_new:N \l__csl_cite_keys_seq
\seq_new:N \l__csl_citation_items_seq
\prop_new:N \l__csl_citation_properties_prop
\prop_new:N \l__csl_citation_info_prop
% #1: prenote
% #2: postnote
% #3: cite keys
% #4: mode
\cs_new:Npn \__csl_cite_in_text:nnnn #1#2#3#4
{
\tl_if_blank:nTF {#3}
{ \__csl_print_undefined_citation:n {#3} }
{
\__csl_cite_init:
\__csl_collect_citation_items:nnn {#1} {#2} {#3}
\__csl_process_citation_info:
\prop_put:Nnn \l__csl_citation_properties_prop { noteIndex } { 0 }
\tl_if_empty:nF {#4}
{
\prop_put:Nnn \l__csl_citation_properties_prop { mode } {#4}
}
\__csl_make_citation:
}
}
% #1: prenote
% #2: postnote
% #3: cite keys
% #4: mode
\cs_new:Npn \__csl_cite_note:nnnn #1#2#3#4
{
\bool_if:NTF \l__csl_in_note_bool
{
\tl_if_blank:nTF {#3}
{ \__csl_print_undefined_citation:n {#3} }
{
\__csl_cite_init:
\__csl_collect_citation_items:nnn {#1} {#2} {#3}
\__csl_process_citation_info:
\tl_if_empty:nF {#4}
{
\prop_put:Nnn \l__csl_citation_properties_prop { mode } {#4}
}
\__csl_make_citation:
}
}
{
\footnote
{
\tl_if_blank:nTF {#3}
{ \__csl_print_undefined_citation:n {#3} }
{
\__csl_cite_init:
\__csl_collect_citation_items:nnn {#1} {#2} {#3}
\__csl_process_citation_info:
\tl_if_empty:nF {#4}
{
\prop_put:Nnn \l__csl_citation_properties_prop { mode } {#4}
}
\__csl_make_citation:
}
}
}
}
% #1: prenote
% #2: postnote
% #3: cite keys
\cs_new:Npn \__csl_cite_parens:nnn #1#2#3
{
\bool_if:NTF \l__csl_note_bool
{ ( \__csl_cite_in_text:nnnn {#1} {#2} {#3} { } ) }
{ \__csl_cite_in_text:nnnn {#1} {#2} {#3} { } }
}
\cs_new:Npn \__csl_text_cite:nnn #1#2#3
{
\bool_if:NTF \l__csl_note_bool
{
% In note styles, the authors are printed in-text followed by a note.
\__csl_cite_in_text:nnnn {#1} {#2} {#3} { author-only }
\__csl_cite_note:nnnn {#1} {#2} {#3} { }
}
{ \__csl_cite_in_text:nnnn {#1} {#2} {#3} { composite } }
}
\bool_new:N \l__csl_multi_cite_bool
\cs_new:Npn \__csl_cites:
{
\__csl_cite_init:
\bool_set_true:N \l__csl_multi_cite_bool
\__csl_next_cites:nnn
}
\NewDocumentCommand \__csl_next_cites:nnn { o o g }
{
\tl_if_novalue:nTF {#3}
{
\bool_if:NTF \l__csl_note_bool
{
\footnote
{
\__csl_process_citation_info:
\__csl_make_citation:
}
}
{
\__csl_process_citation_info:
\__csl_make_citation:
}
}
{
\__csl_collect_citation_items:nnn {#1} {#2} {#3}
\__csl_next_cites:nnn
}
}
\cs_new:Npn \__csl_cite_init:
{
\bool_set_false:N \l__csl_multi_cite_bool
\prop_clear:N \l__csl_citation_info_prop
\seq_clear:N \l__csl_cite_keys_seq
\seq_clear:N \l__csl_citation_items_seq
\prop_clear:N \l__csl_citation_properties_prop
\tl_clear:N \l__csl_cite_prefix_tl
\tl_clear:N \l__csl_cite_suffix_tl
}
% Appends the cite key into \l__csl_cite_keys_seq and cite-items into
% \l__csl_citation_items_seq
% #1, #2: prenote/postnote
% #3: keys
\cs_new:Npn \__csl_collect_citation_items:nnn #1#2#3
{
\tl_if_novalue:nTF {#2}
{
\tl_if_novalue:nTF {#1}
{ \__csl_process_cite_input_aux:nnn { } { } {#3} }
{ \__csl_process_cite_input_aux:nnn { } {#1} {#3} }
}
{ \__csl_process_cite_input_aux:nnn {#1} {#2} {#3} }
}
\cs_new:Npn \__csl_process_cite_input_aux:nnn #1#2#3
% #1: prenote, #2: postnote, #3: keys
% Return: "{id={ITEM-1},{locator=6},...}, {id={ITEM-2},...}, ..."
{
\int_zero:N \l_tmpa_int
\clist_map_inline:nn {#3}
{
\int_incr:N \l_tmpa_int
\seq_put_right:Nn \l__csl_cite_keys_seq {##1}
\int_compare:nNnTF { \l_tmpa_int } = { 1 }
{ \__csl_process_cite_item:nnn {#1} {#2} {##1} }
{ \__csl_process_cite_item:nnn { } { } {##1} }
}
}
\prop_new:N \l__csl_cite_item_prop
% Collect citation items into \l__csl_citation_items_seq
% Append "{id={ITEM},locator={42},label={page}}" into \l__csl_citation_items_seq
% #1: prenote
% #2: postnote
% #3: key
\cs_new:Npn \__csl_process_cite_item:nnn #1#2#3
{
\prop_clear:N \l__csl_cite_item_prop
\prop_put:Nnn \l__csl_cite_item_prop { id } {#3}
% \bool_if:T \l__csl_suppress_author_bool
% { \prop_put:Nnn \l__csl_cite_item_prop { suppress-author } { true } }
% \bool_if:T \l__csl_author_only_bool
% { \prop_put:Nnn \l__csl_cite_item_prop { author-only } { true } }
\tl_clear:N \l__csl_cite_prefix_tl
\tl_clear:N \l__csl_cite_suffix_tl
\tl_if_empty:nF {#1}
{
\tl_set:Nn \l__csl_cite_prefix_tl {#1}
\tl_put_right:NV \l__csl_cite_prefix_tl \l__csl_prefix_separator_tl
}
\tl_if_empty:nF {#2}
{
\tl_if_in:nnTF {#2} { = }
{ \keys_set:nn { csl / cite-item } {#2} }
{
\regex_match:nnTF { \d+ } {#2}
{ \__csl_set_locator:nn { page } {#2} }
{
\tl_set:Nn \l__csl_cite_suffix_tl {#2}
\tl_put_left:NV \l__csl_cite_suffix_tl \l__csl_suffix_separator_tl
}
}
}
% The affixes are treated as cite item affixes in a multi-cite command
% (like `\cites`). Otherwise they are citation affixes.
\bool_if:NTF \l__csl_multi_cite_bool
{
\tl_if_empty:NF \l__csl_cite_prefix_tl
{ \prop_put:NnV \l__csl_cite_item_prop { prefix } \l__csl_cite_prefix_tl }
\tl_if_empty:NF \l__csl_cite_suffix_tl
{ \prop_put:NnV \l__csl_cite_item_prop { suffix } \l__csl_cite_suffix_tl }
}
{
\tl_if_empty:NF \l__csl_cite_prefix_tl
{ \prop_put:NnV \l__csl_citation_properties_prop { prefix } \l__csl_cite_prefix_tl }
\tl_if_empty:NF \l__csl_cite_suffix_tl
{ \prop_put:NnV \l__csl_citation_properties_prop { suffix } \l__csl_cite_suffix_tl }
}
\__csl_serialize_prop:NN \l__csl_cite_item_prop \l_tmpa_tl
\tl_put_left:NV \l_tmpa_tl { \c_left_brace_str }
\tl_put_right:NV \l_tmpa_tl { \c_right_brace_str }
\seq_put_right:NV \l__csl_citation_items_seq \l_tmpa_tl
}
\cs_new:Npn \__csl_set_locator:nn #1#2
{
\tl_if_empty:nTF {#2}
{ \msg_warning:nnn { citation-style-language } { empty-locator } {#1} }
{
\prop_put:Nnn \l__csl_cite_item_prop { label } {#1}
\prop_put:Nnn \l__csl_cite_item_prop { locator } {#2}
}
}
\msg_new:nnn { citation-style-language } { empty-locator }
{ Empty~ '#1'~ locator. }
\tl_new:N \l__csl_cite_prefix_tl
\tl_new:N \l__csl_cite_suffix_tl
\keys_define:nn { csl / cite-item }
{
prefix .tl_set:N = \l__csl_cite_prefix_tl,
suffix .tl_set:N = \l__csl_cite_suffix_tl,
locator .prop_put:N = \l__csl_cite_item_prop,
label .prop_put:N = \l__csl_cite_item_prop,
suppress-author .prop_put:N = \l__csl_cite_item_prop,
author-only .prop_put:N = \l__csl_cite_item_prop,
uris .prop_put:N = \l__csl_cite_item_prop,
% Locators.
act .code:n = { \__csl_set_locator:nn { act } {#1} } ,
appendix .code:n = { \__csl_set_locator:nn { appendix } {#1} } ,
article .code:n = { \__csl_set_locator:nn { article-locator } {#1} } ,
book .code:n = { \__csl_set_locator:nn { book } {#1} } ,
canon .code:n = { \__csl_set_locator:nn { canon } {#1} } ,
chapter .code:n = { \__csl_set_locator:nn { chapter } {#1} } ,
column .code:n = { \__csl_set_locator:nn { column } {#1} } ,
elocation .code:n = { \__csl_set_locator:nn { elocation } {#1} } ,
equation .code:n = { \__csl_set_locator:nn { equation } {#1} } ,
figure .code:n = { \__csl_set_locator:nn { figure } {#1} } ,
folio .code:n = { \__csl_set_locator:nn { folio } {#1} } ,
issue .code:n = { \__csl_set_locator:nn { issue } {#1} } ,
line .code:n = { \__csl_set_locator:nn { line } {#1} } ,
note .code:n = { \__csl_set_locator:nn { note } {#1} } ,
opus .code:n = { \__csl_set_locator:nn { opus } {#1} } ,
page .code:n = { \__csl_set_locator:nn { page } {#1} } ,
paragraph .code:n = { \__csl_set_locator:nn { paragraph } {#1} } ,
part .code:n = { \__csl_set_locator:nn { part } {#1} } ,
rule .code:n = { \__csl_set_locator:nn { rule } {#1} } ,
scene .code:n = { \__csl_set_locator:nn { scene } {#1} } ,
section .code:n = { \__csl_set_locator:nn { section } {#1} } ,
sub-verbo .code:n = { \__csl_set_locator:nn { sub-verbo } {#1} } ,
supplement .code:n = { \__csl_set_locator:nn { supplement } {#1} } ,
table .code:n = { \__csl_set_locator:nn { table } {#1} } ,
timestamp .code:n = { \__csl_set_locator:nn { timestamp } {#1} } ,
title .code:n = { \__csl_set_locator:nn { title-locator } {#1} } ,
verse .code:n = { \__csl_set_locator:nn { verse } {#1} } ,
version .code:n = { \__csl_set_locator:nn { version } {#1} } ,
volume .code:n = { \__csl_set_locator:nn { volume } {#1} } ,
% Citation properties
infix .prop_put:N = \l__csl_citation_properties_prop,
}
\tl_new:N \l__csl_citation_id_tl
\tl_new:N \l__csl_cite_items_tl
\tl_new:N \l__csl_note_index_tl
% Load the cite keys and prepare:
% - \l__csl_citation_id_tl
% - \l__csl_citation_properties_prop
\cs_new:Npn \__csl_process_citation_info:
{
\__csl_process_citation_id:
\__csl_get_note_index:
\prop_put:NnV \l__csl_citation_properties_prop { noteIndex } \l__csl_note_index_tl
\__csl_make_chapter_property:
\__csl_add_back_ref_info:
}
\cs_new:Npn \__csl_make_chapter_property:
{
\int_if_exist:NT \c@chapter
{
\prop_put:Nne \l__csl_citation_properties_prop { chapterIndex }
{ \int_use:N \c@chapter }
}
}
\tl_new:N \l__csl_back_ref_tl
\prop_new:N \g__csl_back_ref_info_prop
% Provide empty \@currentHref when hyperref is not loaded.
% LaTeX2e 2023-06-01 defines `\@currentHref` in the kernel.
\cs_if_exist:NF \@currentHref
{ \cs_new:Npn \@currentHref { } }
% TODO: write backref info to .brf file or .aux file
\cs_new:Npn \__csl_add_back_ref_info:
{
% Same as the second argument of backref's \backcite
% \thepage: the page number
% \@currentlabel: the current label of the citation
% \@currentHref: the current anchor name
\tl_if_empty:NTF \@currentlabel
{
\tl_set:Ne \l__csl_back_ref_tl
{ { \thepage } { (document) } { Doc-Start } }
}
{
\tl_set:Ne \l__csl_back_ref_tl
{ { \thepage } { \@currentlabel } { \@currentHref } }
}
\seq_map_inline:Nn \l__csl_cite_keys_seq
{
\prop_get:NnNTF \g__csl_back_ref_info_prop {##1} \l_tmpa_tl
{
\tl_put_right:Nn \l_tmpa_tl { , }
\tl_put_right:NV \l_tmpa_tl \l__csl_back_ref_tl
\prop_gput:NnV \g__csl_back_ref_info_prop {##1} \l_tmpa_tl
}
{
\prop_gput:NnV \g__csl_back_ref_info_prop {##1}
\l__csl_back_ref_tl
}
}
}
\tl_new:N \l__csl_citation_info_tl
\tl_new:N \l__csl_citation_tl
\prop_new:N \g__csl_citations_prop
\tl_new:N \l__csl_citation_properties_tl
% Write citation info to aux and print the citation contents.
\cs_new:Npn \__csl_make_citation:
{
\prop_clear:N \l__csl_citation_info_prop
% citationID
\prop_put:NnV \l__csl_citation_info_prop { citationID } \l__csl_citation_id_tl
% citationItems
\__csl_serialize_seq:NN \l__csl_citation_items_seq \l__csl_cite_items_tl
\prop_put:NnV \l__csl_citation_info_prop { citationItems } \l__csl_cite_items_tl
% properties
\__csl_serialize_prop:NN \l__csl_citation_properties_prop \l__csl_citation_properties_tl
\prop_put:NnV \l__csl_citation_info_prop { properties } \l__csl_citation_properties_tl
\__csl_serialize_prop:NN \l__csl_citation_info_prop \l__csl_citation_info_tl
% Write to .aux file
% \tl_show:N \l__csl_citation_info_tl
\exp_args:NVV \__csl_write_aux_citation:nn \g__csl_ref_section_index_int \l__csl_citation_info_tl
\bool_if:NT \l__csl_regression_test_bool
{ \tl_show:N \l__csl_citation_info_tl }
% Print the citation string
\prop_get:NVNTF \g__csl_citations_prop \l__csl_citation_id_tl
\l__csl_citation_tl
{ \__csl_print_citation: }
{
\bool_if:NTF \l__csl_engine_initialized_bool
{
% \tl_show:N \l__csl_citation_info_tl
% \tl_set:Nf \l__csl_citation_tl
% { \exp_args:NV \__csl_cite_aux:n \l__csl_citation_info_tl }
\group_begin:
\char_set_catcode_other:N \%
\char_set_catcode_other:N \#
\exp_args:NV \__csl_cite_aux:n \l__csl_citation_info_tl
\__csl_print_citation:
\group_end:
}
{
\exp_args:Ne \__csl_print_undefined_citation:n
{ \seq_use:Nn \l__csl_cite_keys_seq { ,~ } }
}
}
}
\cs_new:Npn \__csl_cite_aux:n #1
{ \lua_now:e { csl_citation_manager:cite("\lua_escape:n {#1}") } }
% #1: seq
% #2: tl
\cs_new:Npn \__csl_serialize_seq:NN #1#2
{
\tl_clear:N #2
\seq_map_inline:Nn #1
{
\tl_if_empty:NF #2
{ \tl_put_right:Nn #2 { , } }
\tl_put_right:Nn #2 { ##1 }
}
}
% #1: prop
% #2: tl
\cs_new:Npn \__csl_serialize_prop:NN #1#2
{
\tl_clear:N #2
\prop_map_inline:Nn #1
{
\tl_if_empty:NF #2
{ \tl_put_right:Nn #2 { , } }
\tl_put_right:Nn #2 { ##1 = { ##2 } }
}
}
\tl_new:N \l__csl_cite_keys_tl
\tl_new:N \l__csl_citation_count_tl
\int_new:N \l__csl_citation_count_int
\prop_new:N \g__csl_citations_count_prop
% Load cite keys from `\l__csl_cite_keys_seq` and make `\l__csl_citation_id_tl`.
% Set \l__csl_citation_id_tl = "ITEM-1,ITEM-2@4".
\cs_new:Npn \__csl_process_citation_id:
{
\tl_set:Ne \l__csl_cite_keys_tl
{ \seq_use:Nn \l__csl_cite_keys_seq { , } }
% \prop_show:N \g__csl_citations_count_prop
% \tl_show:N \l__csl_cite_keys_tl
\prop_get:NVNTF \g__csl_citations_count_prop \l__csl_cite_keys_tl
\l__csl_citation_count_tl
{
\int_set:Nn \l__csl_citation_count_int { \l__csl_citation_count_tl }
\int_incr:N \l__csl_citation_count_int
}
{ \int_set_eq:NN \l__csl_citation_count_int \c_one_int }
\prop_gput:NVV \g__csl_citations_count_prop \l__csl_cite_keys_tl
\l__csl_citation_count_int
\tl_set:Ne \l__csl_citation_id_tl
{ \l__csl_cite_keys_tl @ \int_use:N \l__csl_citation_count_int }
}
\int_new:N \g__csl_pseudo_note_index_int
\int_gset:Nn \g__csl_pseudo_note_index_int { 0 }
% Save the note number to \l__csl_note_index_tl
% TODO: multiple citations in a note
\cs_new:Npn \__csl_get_note_index:
% #1: \l__csl_note_index_tl
{
\bool_if:NTF \l__csl_note_bool
{ \tl_set:Ne \l__csl_note_index_tl { \int_use:c { c@ \@mpfn } } }
{
\tl_if_empty:NTF \l__csl_class_tl
{
% The style class (in-text/note) is undetermined.
\int_set_eq:Nc \l_tmpa_int { c@ \@mpfn }
\int_gincr:N \g__csl_pseudo_note_index_int
\int_add:Nn \l_tmpa_int { \g__csl_pseudo_note_index_int }
\tl_set:Ne \l__csl_note_index_tl { \int_use:N \l_tmpa_int }
}
{ \tl_set:Nn \l__csl_note_index_tl { 0 } }
}
}
\cs_new:Npn \__csl_write_aux_citation:nn #1#2
% #1: refsection index (already converted to tl)
% #2: citation info "{<citationID>}{{id=ITEM-1},{id=ITEM-2}}{<noteIndex>}"
{
\if@filesw
\iow_now:Nn \@auxout { \csl@aux@cite {#1} {#2} }
\fi
}
% Should be set to true when located in a footnote, and to false otherwise
\bool_new:N \l__csl_in_note_bool
\hook_gput_code:nnn { cmd / @makefntext / before } { . }
{ \bool_set_true:N \l__csl_in_note_bool }
\hook_gput_code:nnn { cmd / @makefntext / after } { . }
{ \bool_set_false:N \l__csl_in_note_bool }
% #1: \l__csl_citation_tl
\cs_new:Npn \__csl_print_citation:
{
\bool_if:NT \l__csl_regression_test_bool
{ \tl_show:N \l__csl_citation_tl }
\l__csl_citation_tl
}
\cs_new:Npn \__csl_print_undefined_citation:n #1
% #1: keys
{
\tl_if_blank:nTF {#1}
{
\__csl_warn_citation_undefined:n { }
\__csl_set_undefined_cite:n { ? }
}
{
\clist_map_inline:nn {#1} { \__csl_warn_citation_undefined:n {##1} }
% Underscores in citation keys like `zankl_kunstliche_2019` may cause a missing $ error.
% Thus We convert them to str.
\tl_set:Ne \l_tmpa_str { \tl_to_str:n {#1} }
\exp_args:NV \__csl_set_undefined_cite:n \l_tmpa_str
}
\bool_if:NT \l__csl_regression_test_bool
{ \tl_show:N \l__csl_citation_tl }
\group_begin:
\reset@font \l__csl_citation_tl
\group_end:
}
\cs_new:Npn \__csl_set_undefined_cite:n #1
{
\tl_set:Nn \l__csl_citation_tl { [ \textbf {#1} ] }
}
% \msg_new:nnn { citation-style-language } { undefined-citation }
% { Citation~ '#1'~ on~ page~ \thepage \space undefined~ \msg_line_context: . }
\cs_new:Npn \__csl_warn_citation_undefined:n #1
{
\G@refundefinedtrue
% The warning message is read by latexmk.
\@latex@warning { Citation~ `#1'~ on~ page~ \thepage \space undefined }
}
\DeclareDocumentCommand \nocite { m }
{ \__csl_no_cite:n {#1} }
\cs_new:Npn \__csl_no_cite:n #1
{
\__csl_cite_init:
\__csl_collect_citation_items:nnn { } { } {#1}
\tl_set:Ne \l__csl_cite_items_tl
{ \seq_use:Nn \l__csl_citation_items_seq { , } }
\prop_clear:N \l__csl_citation_properties_prop
\prop_put:Nnn \l__csl_citation_properties_prop { noteIndex } { 0 }
\__csl_make_chapter_property:
\__csl_serialize_prop:NN \l__csl_citation_properties_prop \l__csl_citation_properties_tl
\tl_set:Ne \l__csl_citation_info_tl
{
citationID = { @nocite } ,
citationItems = { \tl_use:N \l__csl_cite_items_tl } ,
properties = { \tl_use:N \l__csl_citation_properties_tl }
}
\bool_if:NT \l__csl_regression_test_bool
{ \tl_show:N \l__csl_citation_info_tl }
\exp_args:NVV \__csl_no_cite_write_aux:nn \g__csl_ref_section_index_int \l__csl_citation_info_tl
\sys_if_engine_luatex:T
{ \lua_now:n { csl_citation_manager:nocite("#1") } }
\tl_clear:N \l__csl_citation_tl
\bool_if:NT \l__csl_regression_test_bool
{ \tl_show:N \l__csl_citation_tl }
}
\cs_new:Npn \__csl_no_cite_write_aux:nn #1#2
{
\__csl_if_preamble:TF
{
\hook_gput_code:nnn { begindocument } { . }
{ \__csl_write_aux_citation:nn {#1} {#2} }
}
{ \__csl_write_aux_citation:nn {#1} {#2} }
}
\prg_new_conditional:Nnn \__csl_if_preamble: { T , F , TF }
{
\if_meaning:w \@begindocumenthook \@undefined
\prg_return_false:
\else
\prg_return_true:
\fi
}
% Used in aux files to register cite items.
% #1: a citation object
\cs_new:Npn \csl@aux@cite #1#2
{
\sys_if_engine_luatex:T
{ \lua_now:e { csl_citation_manager:register_citation_info(#1, "\lua_escape:n {#2}") } }
}
\cs_new:Npn \cslcitation #1#2
{ \prop_gput:Nnn \g__csl_citations_prop {#1} {#2} }
% This command is for use with hyperref.
% #1: cite id
% #2: cite contents
\cs_new:Npn \cslcite #1#2 {#2}
% This command is for use with hyperref.
% #1: cite id
\cs_new:Npn \cslundefinedcite #1 {
\textbf {#1}
\__csl_warn_citation_undefined:n {#1}
}