I cannot seem to re-tag the tag
xelatex even though I was able to add a tag on another question. How come?
xelatex is a synonym for
You should search the posts here on meta for the exact reason for this synonym being made. In this case, it is most likely because having the two tags separate wouldn't actually be reflected in the usage: a newcomer to the site wanting to ask about something to do with
xelatex probably wouldn't realise the distinction. Moreover, there are probably very few people who would like to, say, make
xetex one of their favourite tags whilst ignoring