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envelope-from=arthur.miller@live.com; helo=EUR04-DB3-obe.outbound.protection.outlook.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.io gmane.emacs.devel:274196 Archived-At: Dmitry Gutov writes: > On 05.09.2021 06:44, Richard Stallman wrote: >> I think undo/redo instead of undo-only might be an improvement in >> Emacs, and might not be hard to get used to as a change -- if only we >> can find a key binding for redo. I know we had a discussion of >> this before. > > Let me do a recap. We proposed the keys that a reasonably popular 11 year old > package called undo-tree uses: 'C-?' and 'M-_'. > > You replied that those seem inconvenient because C-? is not available on ttys, > and both C-? and M-_ require two shift keys. > > Others replied later that users generally expect 'redo' to require one more > modifier than 'undo'. In graphical Emacs, it can work out to having 'C-/' call > 'undo', then one can additionally hold down the Shift key to the right of '/', > calling 'redo' with the resulting 'C-?'. > > Alas, there would be no such easy transition in terminal Emacs, but other than > that, requiring an extra modifier key is not inherently a problem. The user > should be able to switch between C-- and M-S-- and back without too much > trouble. > > In the same discussion T.V. Raman mentioned that he has bound 'undo-redo' to > 'C-x C-u', to stay close to 'C-x u', another default binding for 'undo'. > > 'C-x C-u' is unfortunately occupied, but it's a disabled command, so maaaybe we > could take over the binding? Or use 'C-x U'. Introduce an extra prefix: C-v? And put undo on C-v u, and windmove undo on C-v U? :) V is next to c, so all prefixes follow next to each other x,c and v.