Maxim Nikulin <manikulin@gmail.com> writes:

> On 29/06/2021 10:47, James Harkins wrote:
>> * Test
>> 1本人不想亲自拿到学历学位证书、急于离校者,可书面委托他人代领学历学位证
>> 书,29日起即可离校;2本人想亲自领取学历学位证书者,按学校规定的程序及有关
>> 要求办理离校手续,领取相关证书后离校;
>
>> Exporting to ODT produces the following (body text, omitting titles,
>> headers and such).
>> 
>> 1本人不想亲自拿到学历学位证书、急于离校者,可书面委托他人代领学历学位证 书,29日起即可离校;2本人想亲自领取学历学位证书者,按学校规定的程序及有关 要求办理离校手续,领取相关证书后离校;
>
> Confirmed: newlines are copied to ODT document as is and they appear as 
> spaces in libreoffice. I did not tried HTML since I am unsure if 
> browsers should glue paragraphs with newlines into continuous string 
> without spaces. Maybe it is necessary to add some attributes for proper 
> representation (e.g. "lang"), however "#+LANGUAGE: cn" does not help 
> even though libreoffice considers paragraph as Chinese.

Newlines appearing as spaces is in ODT schema.

> As to splicing lines, I found `fill-delete-newlines' that uses 
> `fill-nospace-between-words-table' besides ?| category to determine 
> whether space should be suppressed while splicing lines. In addition 
> there are some variables to tune behavior.

I am attaching the fix that leverages `fill-region' to handle all the
complexities for us. It is the easiest way and I see no reason to look
deeper.