bug#38407: 27.0.50; infinite loop with display of large file without newlines

[Phil Sainty]

See whether M-x global-so-long-mode makes things more tolerable?

Extremely long lines are a problem for Emacs, but so-long.el can
help significantly in some situations.

If you enable that, and then visit your file, it should switch to
so-long-mode.  It won't prevent the redisplay getting relatively
slower the deeper you navigate into a very long line, but it should
make navigating in the early stages of the file much faster, and
help to some extent throughout (but I would still expect displaying
the end of the line to be painful).

M-x so-long-commentary has all of the details.


-Phil