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by marcinreal 1313 days ago
Make sure to check the value of `undo-limit`, as the low default value greatly (and needlessly, on modern machines) nerfs undo. It also applies to extensions like undo-tree and vundo I believe.

> undo-limit is a variable defined in ‘C source code’.

> Its value is 10000000

> Original value was 160000

Speaking of extensions, I find undo-tree pretty buggy. I might be one of a dozen people who actually love the default undo/redo mechanism.