With texinfo.tex 2021-04-25.21 (current version in Debian/unstable)
and 2022-07-27.14 (latest version), even-numbered chapter pages
no longer have a title in the heading. The manual doesn't seem to
document such an exception, while the title provides information
and I don't see a good reason to omit it.
I suppose that the issue is the following code:
\def\HEADINGSdoublex{%
\global\evenfootline={\hfil}
\global\oddfootline={\hfil}
\global\evenheadline={\line{\folio\hfil\thistitle}}
\global\oddheadline={\line{\thischapter\hfil\folio}}
\global\evenchapheadline={\line{\folio\hfil}}
\global\oddchapheadline={\line{\hfil\folio}}
\global\let\contentsalignmacro = \chapoddpage
}
Using
\global\evenchapheadline={\line{\folio\hfil\thistitle}}
restores the title on on even-numbered chapter pages.
--
Vincent Lefèvre <[email protected]> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)