Akira Yokosawa <akiyks@xxxxxxxxx> writes:
> Fancyhdr prior to v4.0 outputs a message per document as follows:
>
> Package Fancyhdr Warning: \headheight is too small (12.0pt):
> Make it at least 13.59999pt.
> We now make it that large for the rest of the document.
> This may cause the page layout to be inconsistent, however.
>
> Fancyhdr v4.0 complains (once a page!) as follows:
>
> Package fancyhdr Warning: \headheight is too small (12.0pt):
> (fancyhdr) Make it at least 13.59999pt, for example:
> (fancyhdr) \setlength{\headheight}{13.59999pt}.
> (fancyhdr) You might also make \topmargin smaller to compensate:
>
> (fancyhdr) \addtolength{\topmargin}{-1.59999pt}.
>
> Related item in fancyhdr v4.0 announcement on 2021-01-04 [1]:
>
> Backward incompatible changes:
> - Eliminate adjustments of \headheight or \footskip, when the
> header or footer is too high.
>
> [1]: https://www.ctan.org/ctan-ann/id/mailman.2685.1609863692.2532.ctan-ann@xxxxxxxx
>
> Silence the warnings by adding a couple of \addtolength commands in
> the preamble.
>
> Signed-off-by: Akira Yokosawa <akiyks@xxxxxxxxx>
> ---
> Hi,
>
> This update doesn't have much visual effects in the final PDFs
> (adjustment of only 1.6pt), but getting rid of harmless warnings
> would help spot potential important ones.
>
> Tested against Sphinx versions 2.4.4 and 4.2.0, with Tex Live
> versions 2017/debian (Ubuntu 18.04), 2019/debian (Ubuntu 20.04),
> and vanilla 2021 (as of 2021-10-08).
>
> Thanks, Akira
> --
> Documentation/conf.py | 3 +++
> 1 file changed, 3 insertions(+)
Applied, thanks.
jon
