Vim < 7.3: "Unknown function: undotree" about targets.vim HOT 3 CLOSED

Oh thank you. I will wrap these undotree calls in some checks to avoid that. You won't get the undo of operations on missing targets though.

from targets.vim.

Why would I want to undo something that didn't change anything?

On Tue, Feb 11, 2014 at 11:11 AM, Christian Wellenbrock <
[email protected]> wrote:

Oh thank you. I will wrap these undotree calls in some checks to avoid
that. You won't get the undo of operations on missing targets though.

Reply to this email directly or view it on GitHubhttps://github.com//issues/11#issuecomment-34769809
.

from targets.vim.

Unfortunately I'm not aware of any way to cancel an operation from within an operation-pending mapping. So when I don't find the target, the operation still occurs, even though it doesn't change anything. In order to address your previously reported issue #4 I decided to undo that operation that didn't change anything to behave as if the operation didn't happen at all.

I use undotree() to see whether or not something changed in between, by comparing the seq_cur index with its previous value. Only if it changed I undo the last operation. If you are aware of a better approach I would be happy to implement it.

from targets.vim.