LaTeX template: Improve readability (#5363)

+ LaTeX template: Improve template readability
  Use `hidelinks` option for hyperref, which has the same effect as `pdfborder={0 0 0}`,
  but its purpose is clearer. Use a simpler conditional for Polyglossia/Babel. Format
  comments more consistently.
+ Update tests
+ Remove hyperref breaklinks option.  According to the documentation, hyperref
  sets this automatically as appropriate to the driver.

1 files changed, 19 insertions, 18 deletions

diff --git a/data/templates/default.latex b/data/templates/default.latex
index fd15e5b15..bb83755e0 100644
--- a/data/templates/default.latex
+++ b/data/templates/default.latex
@@ -1,4 +1,5 @@
-\PassOptionsToPackage{unicode=true$for(hyperrefoptions)$,$hyperrefoptions$$endfor$}{hyperref} % options for packages loaded elsewhere
+% Options for packages loaded elsewhere
+\PassOptionsToPackage{unicode=true$for(hyperrefoptions)$,$hyperrefoptions$$endfor$}{hyperref}
 \PassOptionsToPackage{hyphens}{url}
 $if(colorlinks)$
 \PassOptionsToPackage{dvipsnames,svgnames*,x11names*}{xcolor}
@@ -46,7 +47,7 @@ $endif$
 $for(beameroption)$
 \setbeameroption{$beameroption$}
 $endfor$
-% Prevent slide breaks in the middle of a paragraph:
+% Prevent slide breaks in the middle of a paragraph
 \widowpenalties 1 10000
 \raggedbottom
 $if(section-titles)$
@@ -173,7 +174,7 @@ $if(outertheme)$
 \useoutertheme{$outertheme$}
 $endif$
 $endif$
-% use upquote if available, for straight quotes in verbatim environments
+% Use upquote if available, for straight quotes in verbatim environments
 \IfFileExists{upquote.sty}{\usepackage{upquote}}{}
 \IfFileExists{microtype.sty}{% use microtype if available
   \usepackage[$for(microtypeoptions)$$microtypeoptions$$sep$,$endfor$]{microtype}
@@ -218,10 +219,10 @@ $if(colorlinks)$
   citecolor=$if(citecolor)$$citecolor$$else$Blue$endif$,
   urlcolor=$if(urlcolor)$$urlcolor$$else$Blue$endif$,
 $else$
-  pdfborder={0 0 0},
+  hidelinks,
 $endif$
-  breaklinks=true}
-\urlstyle{same}  % don't use monospace font for urls
+}
+\urlstyle{same} % disable monospaced font for URLs
 $if(verbatim-in-note)$
 \VerbatimFootnotes % allows verbatim text in footnotes
 $endif$
@@ -247,7 +248,7 @@ $if(tables)$
 \usepackage{longtable,booktabs}
 $if(beamer)$
 \usepackage{caption}
-% These lines are needed to make table captions work with longtable:
+% Make caption package work with longtable
 \makeatletter
 \def\fnum@table{\tablename~\thetable}
 \makeatother
@@ -274,10 +275,10 @@ $if(links-as-notes)$
 $endif$
 $if(strikeout)$
 \usepackage[normalem]{ulem}
-% avoid problems with \sout in headers with hyperref:
+% Avoid problems with \sout in headers with hyperref
 \pdfstringdefDisableCommands{\renewcommand{\sout}{}}
 $endif$
-\setlength{\emergencystretch}{3em}  % prevent overfull lines
+\setlength{\emergencystretch}{3em} % prevent overfull lines
 \providecommand{\tightlist}{%
   \setlength{\itemsep}{0pt}\setlength{\parskip}{0pt}}
 $if(numbersections)$
@@ -304,7 +305,7 @@ $if(pagestyle)$
 \pagestyle{$pagestyle$}
 $endif$
 
-% set default figure placement to htbp
+% Set default figure placement to htbp
 \makeatletter
 \def\fps@figure{htbp}
 \makeatother
@@ -313,23 +314,23 @@ $for(header-includes)$
 $header-includes$
 $endfor$
 $if(lang)$
-\ifnum 0\ifxetex 1\fi=0 % if pdftex or luatex
-  \usepackage[shorthands=off,$for(babel-otherlangs)$$babel-otherlangs$,$endfor$main=$babel-lang$]{babel}
-$if(babel-newcommands)$
-  $babel-newcommands$
-$endif$
-\else % if xetex
-  % load polyglossia as late as possible as it *could* call bidi if RTL lang (e.g. Hebrew or Arabic)
+\ifxetex
+  % Load polyglossia as late as possible: uses bidi with RTL langages (e.g. Hebrew, Arabic)
   \usepackage{polyglossia}
   \setmainlanguage[$polyglossia-lang.options$]{$polyglossia-lang.name$}
 $for(polyglossia-otherlangs)$
   \setotherlanguage[$polyglossia-otherlangs.options$]{$polyglossia-otherlangs.name$}
 $endfor$
+\else
+  \usepackage[shorthands=off,$for(babel-otherlangs)$$babel-otherlangs$,$endfor$main=$babel-lang$]{babel}
+$if(babel-newcommands)$
+  $babel-newcommands$
+$endif$
 \fi
 $endif$
 $if(dir)$
 \ifxetex
-  % load bidi as late as possible as it modifies e.g. graphicx
+  % Load bidi as late as possible as it modifies e.g. graphicx
   \usepackage{bidi}
 \fi
 \ifnum 0\ifxetex 1\fi\ifluatex 1\fi=0 % if pdftex