I have updated pandoc to version 3.1.8, and there is still a square to the right of the root symbol.In slides.xml, the value of m:val="1".If I change "1" to "on",the display becomes correct.
I tested the online texmath(texmath demo (johnmacfarlane.net)), the $\sqrt{x}$ is converted to m:val="1",which causes display errors(a square to the right of the root symbol) in PowerPoint.
                                   m:val="1"                  m:val="on"
PowerPoint               Wrong                         Correct
Word                          Correct                        Correct

在2023年9月14日星期四 UTC+8 03:39:13<John MacFarlane> 写道:
I've lost track of what you think is wrong in pandoc.

I had understood you to be using pandoc to produce a docx.  In that case, there should be no problem, because recent versions of pandoc will generate m:val="on", not m:val="1".

If you're instead reading docx, then maybe your point is different, that pandoc should accept both "1" and "on" as on values?


On Sep 12, 2023, at 7:34 AM, Yibotg <yib...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:

I think the opposite of 'm:val="on" '  is  'm:val="off" ', Powerpoint read  'm:val="1"' not as  'm:val="on"' but as 'not on' . Howerver Word Can read   'm:val="1"' as  'm:val="on"'.

在2023年9月12日星期二 UTC+8 09:51:19<Yibotg> 写道:
Sorry John, the first post is right.
<m:degHide m:val="on" /> leads the correct root sign 
and 
<m:degHide m:val="1" /> leads a blank square on the left of root sign.
however in docx,<m:degHide m:val="1" />  leads the correct root sign.

I am sorry for my mistake.
在2023年9月12日星期二 UTC+8 02:38:16<John MacFarlane> 写道:

On Sep 11, 2023, at 5:26 AM, Yibotg <yib...-Re5JQEeQqe8@public.gmane.orgm> wrote:

Sorry , I made a mistake.
<m:degHide m:val="1" /> leads the correct root sign
and
<m:degHide m:val="on" /> leads a blank square on the left of root sign.

Well that's good, because pandoc produces m:val="1".
Perhaps you have an old version?



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