Commits on Nov 15, 2022

1. Limit the number of items in the jumplist …

   Previously, jumplists could grow unchecked. Every transaction is
   applied to jumplist selections to ensure that they are up to date
   and within document bounds, so this would cause every edit to become
   more expensive as jumplist lengths increased throughout a session.
   Setting a maximum number of entries limits the cost.
   
   Vim and Neovim limit their jumplists:
   
   * https://github.com/vim/vim/blob/b298fe6cbae3b240b10dbd55d9c38d0cc8e033d3/src/structs.h#L141
   * https://github.com/neovim/neovim/blob/e8cc489accc435076afb4fdf89778b64f0a48473/src/nvim/mark_defs.h#L57
   
   Notably, Kakoune does not. In Kakoune, changes are applied to jumplist
   entries lazily as you hit `<C-o>`/`<C-i>` though, so Kakoune doesn't
   have the same growing cost concerns. Kakoune also does not have a
   concept of a View which limits the cost further.
   
   Vim and Neovim limit to 100. This seems unreasonably high to me so I've
   set this to 30 to start. We can increase if this is problematically
   low.

   

   the-mikedavis committed Nov 15, 2022
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