-This calculates the same as `--bisect`, but outputs text ready
-to be eval'ed by the shell. These lines will assign the name of
-the midpoint revision to the variable `bisect_rev`, and the
-expected number of commits to be tested after `bisect_rev` is
-tested to `bisect_nr`, the expected number of commits to be
-tested if `bisect_rev` turns out to be good to `bisect_good`,
-the expected number of commits to be tested if `bisect_rev`
-turns out to be bad to `bisect_bad`, and the number of commits
-we are bisecting right now to `bisect_all`.
+This calculates the same as `--bisect`, except that refs in
+`$GIT_DIR/refs/bisect/` are not used, and except that this outputs
+text ready to be eval'ed by the shell. These lines will assign the
+name of the midpoint revision to the variable `bisect_rev`, and the
+expected number of commits to be tested after `bisect_rev` is tested
+to `bisect_nr`, the expected number of commits to be tested if
+`bisect_rev` turns out to be good to `bisect_good`, the expected
+number of commits to be tested if `bisect_rev` turns out to be bad to
+`bisect_bad`, and the number of commits we are bisecting right now to
+`bisect_all`.