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Re: undo an undo
From: |
Stefan Monnier |
Subject: |
Re: undo an undo |
Date: |
Wed, 26 May 2004 18:26:38 GMT |
User-agent: |
Gnus/5.09 (Gnus v5.9.0) Emacs/21.3.50 |
> It might be better to point out that the undo history is not a stack;
Indeed, it's more like a tree, in the sense that when you undo something you
go back towards the root and future changes will be recorded as a new
branch. But since the undo itself is a change, it is also recorded in the
tree at the tip of the current branch. So you really get a big ugly
directed acyclic graph.
Stefan