citeproc-util.lua:321: bad argument #1 to 'gmatch' (string expected, got table)

[epireyn]

Describe the bug
When executing lualatex test.tex or citeproc-lua text.tex, the error mentioned in the title occurs

Additional information

• TeX distribution: [e.g. TeX Live 2022, MacTeX 2022, TeX Live 2022 on Overleaf]
• Package citation-style-language version: [e.g. v0.1.0, main branch]
• LaTeX engine: [e.g. pdflatex / xelatex / lualatex]

To Reproduce

\documentclass{article}

\begin{filecontents}[overwrite, noheader]{\jobname.json}
[
    {
        "id": "ITEM-1",
        "type": "book",
        "author": [
            {
                "family": "D’Arcus",
                "given": "Bruce"
            }
        ],
        "issued": {
            "date-parts": [
                [
                    2005
                ]
            ]
        },
        "publisher": "Routledge",
        "title": "Boundaries of dissent: Protest and state power in the media age"
    }
]
\end{filecontents}

\usepackage[style = custom-style]{citation-style-language}
\addbibresource{\jobname.json}
\usepackage{hyperref}

\begin{document}
\cite{ITEM-1}
\printbibliography
\end{document}

The custom style

<?xml version="1.0" encoding="utf-8"?>
<style class="note" version="1.0" et-al-min="3" et-al-use-first="1" et-al-subsequent-min="3"
       et-al-subsequent-use-first="1" name-as-sort-order="first" page-range-format="expanded" default-locale="fr-FR"
       xmlns="http://purl.org/net/xbiblio/csl">
  <!-- This style was edited with the Visual CSL Editor (https://editor.citationstyles.org/visualEditor/) -->
  <info>
    <title>Université Catholique de Louvain - FIAL</title>
    <title-short>FIAL</title-short>
    <id>http://www.zotero.org/styles/universite-catholique-de-louvain-fial</id>
    <link href="http://www.zotero.org/styles/universite-catholique-de-louvain-fial" rel="self"/>
    <link href="http://zeus.fltr.ucl.ac.be/Harmonisation_bibliographique.pdf" rel="documentation" xml:lang="fr-FR"/>
    <author>
      <name>Edgar Pireyn</name>
      <email>edgar.pireyn@student.uclouvain.be</email>
    </author>
    <category field="humanities" citation-format="note"/>
    <updated>2023-12-01T16:45:53+00:00</updated>
    <rights license="http://creativecommons.org/licenses/by-sa/3.0/">This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 License</rights>
  </info>
  <locale xml:lang="fr">
    <terms>
      <term name="ordinal">e</term>
      <term name="cited">op. cit.</term>
      <term name="editor" form="short">éd.</term>
      <term name="in">dans</term>
      <term name="translator">traduit par </term>
      <term name="director">dirigée par </term>
      <term name="ordinal-01" match="last-two-digits">er</term>
    </terms>
  </locale>
  <macro name="Author">
    <names variable="author" delimiter=", ">
      <name and="text" delimiter-precedes-last="never" initialize="false" initialize-with="." name-as-sort-order="all" sort-separator=" ">
        <name-part name="family" text-case="capitalize-first" font-variant="small-caps"/>
      </name>
      <substitute>
        <text macro="editor"/>
      </substitute>
    </names>
  </macro>
  <macro name="editor">
    <names variable="editor" delimiter=", ">
      <name and="text" delimiter-precedes-last="never" initialize="false" initialize-with="." name-as-sort-order="all" sort-separator=" ">
        <name-part name="family" text-case="capitalize-first" font-variant="small-caps"/>
      </name>
    </names>
    <text term="editor" form="short" prefix=" (" suffix=")"/>
  </macro>
  <macro name="translator">
    <text term="translator"/>
    <names variable="translator" font-variant="normal" delimiter=", ">
      <name and="text" delimiter-precedes-last="never" et-al-min="3" et-al-use-first="1" name-as-sort-order="all" sort-separator=" ">
        <name-part name="family" font-variant="normal"/>
      </name>
    </names>
  </macro>
  <macro name="Title">
    <group delimiter=", ">
      <choose>
        <if type="article-journal article-magazine article-newspaper entry-dictionary entry-encyclopedia chapter" match="any">
          <text macro="Title-in-title"/>
        </if>
        <else>
          <text variable="title" text-case="capitalize-first" font-style="italic"/>
        </else>
      </choose>
      <choose>
        <if type="thesis" match="any">
          <group delimiter=", ">
            <text variable="genre" text-case="capitalize-first"/>
            <choose>
              <if match="any" variable="director">
                <group delimiter=" ">
                  <text term="director"/>
                  <names variable="director" delimiter=",">
                    <name and="text" initialize="false" name-as-sort-order="all">
                      <name-part name="family" text-case="capitalize-first" font-variant="small-caps"/>
                    </name>
                  </names>
                </group>
              </if>
            </choose>
          </group>
        </if>
      </choose>
    </group>
  </macro>
  <macro name="Edition-Publisher-Issued">
    <group delimiter=", ">
      <choose>
        <if match="any" is-numeric="edition">
          <group delimiter=" ">
            <number variable="edition" form="ordinal"/>
            <text term="edition" form="short" vertical-align="baseline"/>
          </group>
        </if>
        <else>
          <text variable="edition" text-case="capitalize-first"/>
        </else>
      </choose>
      <text variable="publisher-place"/>
      <text variable="publisher"/>
      <choose>
        <if type="webpage post-weblog article-journal article-magazine article-newspaper" match="none">
          <choose>
            <if match="any" variable="issued">
              <choose>
                <if match="any" is-numeric="issued">
                  <date date-parts="year" form="text" variable="issued"/>
                </if>
                <else>
                  <date form="text" date-parts="year-month-day" variable="issued"/>
                </else>
              </choose>
            </if>
            <else>
              <text term="no date" form="short"/>
            </else>
          </choose>
        </if>
      </choose>
    </group>
  </macro>
  <macro name="Volume-Issue">
    <choose>
      <if match="none" variable="volume">
        <choose>
          <if match="any" is-numeric="number-of-volumes">
            <group delimiter=" ">
              <text variable="number-of-volumes"/>
              <text term="volume" form="short"/>
            </group>
          </if>
        </choose>
      </if>
    </choose>
    <group delimiter=", ">
      <group delimiter=", ">
        <choose>
          <if match="any" is-numeric="issue">
            <group>
              <text term="issue" form="short" suffix=" "/>
              <number variable="issue"/>
            </group>
          </if>
          <else>
            <text variable="issue" suffix="hello"/>
          </else>
        </choose>
      </group>
      <group>
        <choose>
          <if type="article-journal article-magazine article-newspaper" match="any">
            <date form="text" variable="issued"/>
          </if>
        </choose>
      </group>
    </group>
  </macro>
  <macro name="Page-URL">
    <group delimiter=", ">
      <text macro="Locator-or-Page"/>
      <group delimiter=", ">
        <choose>
          <if match="any" variable="URL">
            <text term="online" text-case="capitalize-first" prefix="[" suffix="]"/>
            <text variable="URL" prefix="&lt;" suffix="&gt;"/>
            <group delimiter=" " prefix="(" suffix=")">
              <text term="accessed" text-case="capitalize-first"/>
              <date form="text" variable="accessed"/>
            </group>
          </if>
        </choose>
      </group>
    </group>
  </macro>
  <macro name="Locator-or-Page">
    <choose>
      <if match="any" variable="locator">
        <text macro="Locator"/>
      </if>
      <else>
        <group delimiter=" ">
          <label variable="page" form="short"/>
          <text variable="page"/>
        </group>
      </else>
    </choose>
  </macro>
  <macro name="Locator">
    <group delimiter=" ">
      <label variable="locator" form="short"/>
      <text variable="locator"/>
    </group>
  </macro>
  <macro name="Archive">
    <group delimiter=", ">
      <text variable="publisher-place" font-variant="small-caps"/>
      <text variable="archive"/>
      <text variable="archive_location" font-style="italic"/>
      <text variable="source"/>
      <text variable="call-number"/>
      <text macro="Locator"/>
    </group>
  </macro>
  <macro name="Title-in-title">
    <group delimiter=", ">
      <text variable="title" text-case="capitalize-first" quotes="true"/>
      <choose>
        <if match="any" variable="container-author editor">
          <group delimiter=", ">
            <group delimiter=" ">
              <text term="in"/>
              <choose>
                <if type="chapter" match="all" variable="container-author">
                  <names variable="container-author" delimiter=", ">
                    <name and="text" delimiter-precedes-last="never" initialize="false" initialize-with="." name-as-sort-order="all" sort-separator=" ">
                      <name-part name="family" font-variant="small-caps"/>
                    </name>
                  </names>
                </if>
                <else-if match="any" variable="editor">
                  <text macro="editor"/>
                </else-if>
              </choose>
            </group>
            <text variable="container-title" text-case="title" font-style="italic"/>
          </group>
        </if>
        <else>
          <group delimiter=" ">
            <text term="in"/>
            <text variable="container-title" text-case="title" font-style="italic"/>
          </group>
        </else>
      </choose>
    </group>
  </macro>
  <macro name="Title-subsequent"/>
  <macro name="Volume-alpha">
    <choose>
      <if match="all" variable="volume">
        <group delimiter=" ">
          <number vertical-align="baseline" variable="volume"/>
          <text term="volume" form="short"/>
        </group>
      </if>
    </choose>
  </macro>
  <macro name="Collection">
    <group delimiter=", " prefix="(" suffix=")">
      <text variable="collection-title"/>
      <number prefix=" " variable="collection-number"/>
    </group>
  </macro>
  <citation et-al-min="4" et-al-use-first="1">
    <layout delimiter=" ">
      <group display="block" suffix=".">
        <choose>
          <if position="ibid-with-locator">
            <group delimiter=", " suffix=".">
              <text term="ibid" text-case="capitalize-first" font-style="italic" suffix="."/>
              <text macro="Locator"/>
            </group>
          </if>
          <else-if position="ibid">
            <text term="ibid" text-case="capitalize-first" font-style="italic"/>
          </else-if>
          <else-if position="subsequent">
            <group delimiter=", " suffix=".">
              <text macro="Author"/>
              <text macro="Title-subsequent"/>
              <text term="cited" text-case="lowercase" font-style="italic"/>
              <text macro="Locator"/>
            </group>
          </else-if>
          <else>
            <choose>
              <if type="manuscript" match="any">
                <text macro="Archive"/>
              </if>
              <else>
                <group delimiter=", ">
                  <text macro="Author"/>
                  <text macro="Title"/>
                  <text macro="Edition-Publisher-Issued"/>
                  <text macro="translator"/>
                  <text macro="Volume-alpha"/>
                  <text macro="Volume-Issue"/>
                  <text macro="Collection"/>
                  <text macro="Page-URL"/>
                </group>
              </else>
            </choose>
          </else>
        </choose>
      </group>
    </layout>
  </citation>
  <bibliography et-al-min="4" et-al-use-first="1">
    <sort>
      <key macro="Author"/>
      <key variable="issued" sort="descending"/>
      <key macro="Archive"/>
    </sort>
    <layout suffix=".">
      <choose>
        <if type="manuscript" match="any">
          <text macro="Archive"/>
        </if>
        <else>
          <group delimiter=", ">
            <text macro="Author"/>
            <text macro="Title"/>
            <text macro="translator"/>
            <text macro="Volume-alpha"/>
            <text macro="Edition-Publisher-Issued"/>
            <text macro="Volume-Issue"/>
            <text macro="Collection"/>
            <text macro="Page-URL"/>
          </group>
        </else>
      </choose>
    </layout>
  </bibliography>
</style>

Logs
test.log

[epireyn]

I fixed my issue.
I would check whether a "date-part" object (table) was a number (is_numeric).
Maybe add a better warning message or stop the process?

[zepinglee]

Thanks for your report and I've added checking the variable types. Now the example above compiles successfully only with thw following warnings.

Module citeproc Warning: Expecting number variable for condition "is-numeric", got date "issued" on input line 370

Module citeproc Warning: Expecting number variable for condition "is-numeric", got date "issued" on input line 370

Module citeproc Warning: display="block" is not supported in LaTeX output. on input line 370