rstudio · cderv · Apr 29, 2026 · Apr 29, 2026
diff --git a/DESCRIPTION b/DESCRIPTION
@@ -1,7 +1,7 @@
 Type: Package
 Package: rticles
 Title: Article Formats for R Markdown
-Version: 0.27.12
+Version: 0.27.13
 Authors@R: c(
     person("JJ", "Allaire", , "jj@posit.co", role = "aut"),
     person("Yihui", "Xie", , "xie@yihui.name", role = "aut",

diff --git a/NEWS.md b/NEWS.md
@@ -36,6 +36,12 @@ supported by the `copernicus.cls`, and fix an issue where the section headers we
 
 ## MINOR CHANGES
 
+- Update `jss_article()` template to align with new JSS example from `jss.cls` v3.6 (2026-04-28):
+  - `\documentclass` now defaults to `[article]` class option when none is specified in YAML.
+  - Removed `\usepackage[utf8]{inputenc}` (handled by modern LaTeX and `jss.cls`).
+  - Added `\setlength{\emergencystretch}{3em}` to prevent overfull lines.
+  - Updated CSL citation helper commands (`\CSLBlock`, `\CSLLeftMargin`, `\CSLRightInline`) to match current Pandoc defaults, improving bibliography spacing and baseline alignment.
+
 - Adapt all templates to new Pandoc 3.8.2.1 change regarding table counter definition (#595).
 
 - Patch `WileyNDJ` template used in `sim_article()` to fix an issue with `etex` package not being useful anymore in recent LaTeX distributions (#593).

diff --git a/inst/rmarkdown/templates/jss/resources/template.tex b/inst/rmarkdown/templates/jss/resources/template.tex
@@ -1,14 +1,8 @@
-\documentclass[
-$for(classoption)$
-  $classoption$$sep$,
-$endfor$
-]{$documentclass$}
+\documentclass[$if(classoption)$$for(classoption)$$classoption$$sep$,$endfor$$else$article$endif$]{$documentclass$}
 
 %% recommended packages
 \usepackage{orcidlink,thumbpdf,lmodern}
 
-\usepackage[utf8]{inputenc}
-
 \author{
 $for(author)$$author.name$$if(author.orcid)$~\orcidlink{$author.orcid$}$endif$\\$author.affiliation$$sep$ \And $endfor$
 }
@@ -67,6 +61,8 @@
 \providecommand{\tightlist}{%
   \setlength{\itemsep}{0pt}\setlength{\parskip}{0pt}}
 
+\setlength{\emergencystretch}{3em} % prevent overfull lines
+
 $if(tables)$
 % From pandoc table feature
 \usepackage{longtable,booktabs,array}
@@ -187,9 +183,9 @@
  {}
 $endif$$endif$
 \usepackage{calc}
-\newcommand{\CSLBlock}[1]{#1\hfill\break}
-\newcommand{\CSLLeftMargin}[1]{\parbox[t]{\csllabelwidth}{#1}}
-\newcommand{\CSLRightInline}[1]{\parbox[t]{\linewidth - \csllabelwidth}{#1}\break}
+\newcommand{\CSLBlock}[1]{\hfill\break\parbox[t]{\linewidth}{\strut\ignorespaces#1\strut}}
+\newcommand{\CSLLeftMargin}[1]{\parbox[t]{\csllabelwidth}{\strut#1\strut}}
+\newcommand{\CSLRightInline}[1]{\parbox[t]{\linewidth - \csllabelwidth}{\strut#1\strut}}
 \newcommand{\CSLIndent}[1]{\hspace{\cslhangindent}#1}
 $endif$
 

diff --git a/inst/rmarkdown/templates/jss/skeleton/jss.bst b/inst/rmarkdown/templates/jss/skeleton/jss.bst
@@ -6,7 +6,7 @@
 %%
 %% merlin.mbs  (with options: `ay,nat,nm-rvx,keyxyr,dt-beg,yr-par,note-yr,tit-qq,atit-u,trnum-it,vol-bf,volp-com,num-xser,pre-edn,isbn,issn,edpar,pp,ed,xedn,xand,etal-it,revdata,eprint,url,url-blk,doi,nfss')
 %%
-%% ** BibTeX style file for JSS publications (http://www.jstatsoft.org/)
+%% ** BibTeX style file for JSS publications (https://www.jstatsoft.org/)
 %%
 %% License: GPL-2 | GPL-3
  % ===============================================================

diff --git a/inst/rmarkdown/templates/jss/skeleton/jss.cls b/inst/rmarkdown/templates/jss/skeleton/jss.cls
@@ -1,10 +1,10 @@
 %%
 %% This is file `jss.cls',
-\def\fileversion{3.3}
+\def\fileversion{3.6}
 \def\filename{jss}
-\def\filedate{2021/05/23}
+\def\filedate{2026/04/28}
 %%
-%% Package `jss' to use with LaTeX2e for JSS publications (http://www.jstatsoft.org/)
+%% Package `jss' to use with LaTeX2e for JSS publications (https://www.jstatsoft.org/)
 %% License: GPL-2 | GPL-3
 %% Copyright: (C) Achim Zeileis
 %% Please report errors to Achim.Zeileis@R-project.org
@@ -51,7 +51,7 @@
 \ProcessOptions
 \LoadClass[11pt,a4paper,twoside]{article}
 %% required packages
-\RequirePackage{graphicx,xcolor,ae,fancyvrb}
+\RequirePackage{graphicx,xcolor,fancyvrb}
 \RequirePackage[T1]{fontenc}
 \IfFileExists{upquote.sty}{\RequirePackage{upquote}}{}
 \IfFileExists{lmodern.sty}{\RequirePackage{lmodern}}{}
@@ -115,7 +115,7 @@
 \newcommand{\Seconddate}[1]{\def\@Seconddate{#1}}
 \newcommand{\Reviewauthor}[1]{\def\@Reviewauthor{#1}}
 %% defaults
-\author{Firstname Lastname\\Affiliation}
+\author{Givenname Familyname\\Affiliation}
 \title{Title}
 \Abstract{---!!!---an abstract is required---!!!---}
 \Plainauthor{\@author}
@@ -126,15 +126,15 @@
 \Submitdate{yyyy-mm-dd}
 \Acceptdate{yyyy-mm-dd}
 \Address{
-  Firstname Lastname\\
+  Givenname Familyname\\
   Affiliation\\
   Address, Country\\
   E-mail: \email{name@address}\\
-  URL: \url{http://link/to/webpage/}
+  URL: \url{https://link/to/webpage/}
 }
 
-\Reviewer{Firstname Lastname\\Affiliation}
-\Plainreviewer{Firstname Lastname}
+\Reviewer{Givenname Familyname\\Affiliation}
+\Plainreviewer{Givenname Familyname}
 \Booktitle{Book Title}
 \Bookauthor{Book Author}
 \Publisher{Publisher}
@@ -143,7 +143,7 @@
 \ISBN{x-xxxxx-xxx-x}
 \Pages{xv + 123}
 \Price{USD 69.95 (P)}
-\URL{http://link/to/webpage/}
+\URL{https://link/to/webpage/}
 \DOI{10.18637/jss.v000.i00}
 \if@article
   \Seriesname{Issue}
@@ -230,10 +230,10 @@
     \vspace{.1\baselineskip}
     {\fontfamily{pzc} \fontsize{13}{15} \selectfont Journal of Statistical Software}
     \hfill
-    \url{http://www.jstatsoft.org/}\\ \nopagebreak
+    \url{https://www.jstatsoft.org/}\\ \nopagebreak
     published by the Foundation for Open Access Statistics
     \hfill
-    \url{http://www.foastat.org/}\\[.3\baselineskip] \nopagebreak
+    \url{https://www.foastat.org/}\\[.3\baselineskip] \nopagebreak
     {\@Month{} \@Year, Volume~\@Volume, \@Seriesname~\@Issue}
     \hfill
     \@Firstdate\\ \nopagebreak
@@ -253,6 +253,7 @@
 %% required packages
 \RequirePackage{hyperref}
 %% new \maketitle
+\newcommand{\centerheader}[1]{\null\hfill#1\hfill\null}
 \def\@myoddhead{
   {\color{white} JSS}\\[-1.42cm]
   \hspace{-2em} \includegraphics[height=23mm,keepaspectratio]{jsslogo} \hfill
@@ -287,9 +288,9 @@
 
     \thispagestyle{empty}
     \if@nojss
-      \markboth{\centerline{\@Shorttitle}}{\centerline{\@Hyperauthor}}
+      \markboth{\centerheader{\@Shorttitle}}{\centerheader{\@Hyperauthor}}
     \else
-      \markboth{\centerline{\@Shorttitle}}{\centerline{\@Hypersubject}}
+      \markboth{\centerheader{\@Shorttitle}}{\centerheader{\@Hypersubject}}
     \fi
     \pagestyle{myheadings}
   }
@@ -310,13 +311,13 @@
    \setcounter{footnote}{0}
 
    \if@noheadings
-    %% \markboth{\centerline{\@Shorttitle}}{\centerline{\@Hypersubject}}
+    %% \markboth{\centerheader{\@Shorttitle}}{\centerheader{\@Hypersubject}}
     \else
      \thispagestyle{empty}
       \if@nojss
-        \markboth{\centerline{\@Shorttitle}}{\centerline{\@Hyperauthor}}
+        \markboth{\centerheader{\@Shorttitle}}{\centerheader{\@Hyperauthor}}
       \else
-        \markboth{\centerline{\@Shorttitle}}{\centerline{\@Hypersubject}}
+        \markboth{\centerheader{\@Shorttitle}}{\centerheader{\@Hypersubject}}
       \fi
      \pagestyle{myheadings}
    \fi
@@ -417,11 +418,12 @@
   \renewcommand{\subsubsection}{\secdef \jsssubsubsec \jsssubsubsecnn}
 \fi
 %% colors
+\AtBeginDocument{%
 \definecolor{Red}{rgb}{0.5,0,0}
 \definecolor{Blue}{rgb}{0,0,0.5}
+}
 \if@review
   \hypersetup{%
-    hyperindex = {true},
     colorlinks = {true},
     linktocpage = {true},
     plainpages = {false},
@@ -434,7 +436,6 @@
   }
 \else
   \hypersetup{%
-    hyperindex = {true},
     colorlinks = {true},
     linktocpage = {true},
     plainpages = {false},
@@ -467,7 +468,7 @@
 \if@notitle
   %% \AtBeginDocument{\maketitle}
 \else
-  \@ifundefined{AddToHook}{\AtBeginDocument{\maketitle}}{\AddToHook{begindocument}[maketitle]{\maketitle}}
+  \@ifundefined{AddToHook}{\AtBeginDocument{\maketitle}}{\AddToHook{begindocument/end}[maketitle]{\maketitle}}
 \fi
 %% commands
 \newcommand\code{\bgroup\@makeother\_\@makeother\~\@makeother\$\@codex}