ox-latex default template changed sentence spacing from 9.6 to 9.7 ?

[pinmacs@cas.cat]

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Hi,

Yesterday I re-exported an old pdf file with the new orgmode 9.7, I
discovered a difference in the styling or the template compared to
what it was in orgmode 9.6

Luckily, after adding this line to the export [1] it matched 100%
(tested with diffpdf).

I could be wrong and maybe the change was on my side, but I doubt
because I use debian stable, and I did not change almost anything on
the base system, the only thing I did is to upgrade from emacs 29 to
emacs 30 one week ago.

If this styling change is confirmed [2], I think it should appear in the
NEWS.

I also would like to know if orgmode plans to change the style again
(and if the style changes, if it is going to be noticed in the
NEWS). Right now I am not familiar with a more deep workflow of the
latex export, but maybe ox-latex could work with a latex template, and
then I would realize how to use it so I am covered to reproduce the
same PDFs independently of the orgmode version.


Cheers,
pinmacs

[1] ~#+LATEX_HEADER: \linespread{1}~
   which is about sentence spacing 
https://en.wikipedia.org/wiki/Sentence_spacing

[2] If you need on my side more details to facilitate reproducibility let
me know and I will try to be more concrete.


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