`hyperref`'s `breaklinks` option honored with `lualatex` but not with `pdflatex`

[dbitouze]

The following MWE shows that the hyperref's breaklinks option is honored with lualatex but not with pdflatex:

• with lualatex, the URL is broken at the line (and page) break (as expected),
• with pdflatex, the URL is not broken at the line (and page) break.

  
  \RequirePackage{pdfmanagement-testphase}
  \DeclareDocumentMetadata{uncompress}

\documentclass{article} \usepackage{lipsum} \usepackage[base]{babel} \usepackage[breaklinks]{hyperref} \begin{document} \lipsum[1-5] Fusce mauris. Vestibulum luctus \url{https://www.foofoofoofoofoofoofoofoofoofoo.org} \end{document}

BTW, if `pdfmanagement-testphase` is not loaded, the issue https://github.com/latex3/hyperref/issues/54 occurs, which tends to prove that the new LaTeX PDF management is well on its way to fixing it! :smile: 

[u-fischer]

The option breaklinks does nothing at all with pdftex or luatex (and not much with other drivers too, imho the only driver with some code here is hdviwind.def).

You see simply some difference between paragraph building of the engines. With this for example both break the link:

\documentclass{article}
\usepackage{hyperref}
\begin{document}

xxxxxxxxxxxxxxxxxx  Fusce mauris. Vestibulum xxxxxxx
\url{https://www.foofoofoofoofoofoofoofoofoofoo.org} 
\end{document}