Origin for each line in .gitattributes from check-in c1ddb4c814:

c1ddb4c814 2021-03-01 jeff@gridfini: # Effectively disable Linguist
c1ddb4c814 2021-03-01 jeff@gridfini: doc/* linguist-vendored
c1ddb4c814 2021-03-01 jeff@gridfini: src/* linguist-vendored
c1ddb4c814 2021-03-01 jeff@gridfini: *.md linguist-vendored
c1ddb4c814 2021-03-01 jeff@gridfini: *.txt linguist-vendored
c1ddb4c814 2021-03-01 jeff@gridfini: *.red linguist-vendored