en_tn_lite_do_not_use/mat/11/18.md

not eating bread or drinking wine

This could mean 1) that John did not eat expensive food or 2) that John fasted often. John also did not drink wine.

they say, 'He has a demon.'

"they say that he has a demon."

they say

The word "they" refers to the people of that generation, and most specifically to the Pharisees and religious leaders. Alternate translation: "people say"