so-long.el improves performance in files with extremely long lines, by disabling features which are likely to slow Emacs down. See M-x so-long-commentary for full documentation.
Questions tagged [so-long]
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How do I prevent extremely long lines making Emacs slow?
I see hugely varied performance depending on how many newlines there are in the file I'm visiting.
Here's an example. I have two JSON files:
$ wget…

Wilfred Hughes
- 6,890
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