Soft hyphen handling (Markdown, docx)

[BowiFromStackOverflow]

Consider this example markdown file testDoc.md, consisting of one word:

Konfi­guration

Add a soft hyphen after "Konfi" (in Windows, it's ALT+0173), I cannot add it here.

Converting it to html with pandoc -s -o testDoc.md.docx testDoc.md brings a Word file with the following relevant part:

<w:t xml:space="preserve">Konfi&#173;guration</w:t>

But this is wrong. When I edit the file with word and replace the unicode character, showing as hard hyphen (Word does not seem to understand it), with a Word-y soft hyphen (Ctrl + -), the edited file testDoc.md.docx-edited.docx contains this:

<w:r><w:t>Konfi</w:t></w:r><w:r><w:softHyphen/></w:r><w:r w:rsidR="007628EE"><w:t>guration</w:t></w:r>

(I do not know how much garbage that line contains, the important part is <w:softHyphen/> instead of the inline ­.)

The other way round, it's correct. When I convert the edited file back to Markdown (pandoc -s -o testDoc.md.docx-edited.docx.md testDoc.md.docx-edited.docx), it is equal to the document I started with, including the soft hyphen (#2415).