dir-local-variables-alist is a variable defined in `files.el'.
Its value is

  • Automatically becomes buffer-local when set.
  • This variable is ignored as a file-local variable.

Alist of directory-local variable settings in the current buffer.
Each element in this list has the form (VAR . VALUE), where VAR
is a directory-local variable (a symbol) and VALUE is the value
specified in .dir-locals.el. The actual value in the buffer
may differ from VALUE, if it is changed by the major or minor modes,
or by the user.