this post was submitted on 19 Oct 2023
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Is there break undo in Emacs? (alien.top)
submitted 1 year ago by chesheersmile@alien.top to c/emacs
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I'm an Emacs newbie (using Doom Emacs with GNU Emacs 29.1). I came from vim, and battling with undo there was crazy enough, but I won using this:

inoremap  u
inoremap  u
inoremap  u
inoremap  u
inoremap  u
inoremap  u
inoremap  u
inoremap , ,u
inoremap . .u
inoremap ( (u
inoremap [ [u
inoremap = =u
inoremap \" \"u
inoremap  u
inoremap  u

Also, I had autogroup that breaks undo every 4 seconds.

Basically, this configuration breaks undo on almost every possible type command, every Spacebar, Enter, comma, bracket, moving up, down, everything. This is because I hate when undo deletes the whole screen of text.

How do I replicate this in Emacs? I read this, but it doesn't say what is considered a "recent change".

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[–] Gandalf_the_Gray@alien.top 1 points 1 year ago

The following paragraph from what you quote has the heavy handed approach whereby no changes are amalgamated and undo would work character by character.

The maximum number of changes that can be amalgamated is controlled by the amalgamating-undo-limit variable. If this variable is 1, no changes are amalgamated.