How is [x] used in medieval German?

[Koen G]

Yet I think the genitive use in bocks- -> box/pox without expletive background is unusual

Yes, that's the point I'm trying to get across. People seem to have thought so far that it is perfectly normal to write something like "then take a male goat's liver" as "so nim ain pox leber", but the usage of x would be really out of place here. So far, it seems like x is limited to a few categories:

* Latin numerals
* Latin words (either loan words in a German text or entire fragments of Latin)
* A limited list of German words that somehow got x in their spelling

So far, the list definitely does not include free usage when the genitive of a word in /k/ ends up making a /ks/ sound. So even if I favor the "cooking ingredient" reading thematically, I must for now favor the expletive meaning on grounds of the spelling. Looking for further examples of the use of x in 15th century German writing might confirm, reject or refine this statement.

Edit: this is why I think the expletive use could be spelled with [x]. Saying /poks/ instead of /gotts/ is an example of a You are not allowed to view links. Register or Login to view., "formed by deliberately misspelling, mispronouncing, or replacing a part of a profane, blasphemous, or taboo word or phrase to reduce the original term's objectionable characteristics. An example is "gosh" for "God"."

If this is indeed a deliberate mispronunciation of "God's", or even a euphemistic use of "bock's" for the devil, then the word will be perceived as separate from the original. If you say "gosh" instead of "God" or "Crickey" instead of "Christ", you are not thinking about the original words anymore. Hence, the "pox" use may have gotten its own spelling, its own separate word image.