Re: A feature to go to last edit locations

[Ergus]

On February 13, 2023 8:49:46 PM GMT+01:00, Michael Welsh Duggan <mwd@md5i.com> 
wrote:
>Daniel Martín <mardani29@yahoo.es> writes:
>
>> Some IDEs and text editors provide a feature to go to the position of
>> the last edit location across all buffers.  For example, in Eclipse or
>> IntelliJ IDEA, this feature is under Navigate, Last Edit Location.  In
>> Vim, this feature is called a "change list jump" [1], but it seems to
>> work in a per-buffer basis.
>>
>> The closest thing in Emacs is pop-global-mark, but it's not quite the
>> same feature. The global mark ring requires that the user sets the mark
>> in advance, and most editing commands do not set the mark.  Information
>> about last edit locations is already kept in buffer-undo-list, but this
>> list is per-buffer and does not contain timestamps, so generating a
>> "global" list for all buffers out of this data structure does not seem
>> very possible or efficient at the moment; it may need a new data
>> structure, perhaps at the C level.
>
>I often want to jump to the last change I made in a buffer, but I've
>never wanted this across buffers.  The method I use for this, burned
>into my fingertips, is "C-_ C-SPC C-_", which is undo, set mark, undo.

I use exactly this same method (undo-redo). It is not very confortable, so any 
function to mimic part of this may be useful... But please, nothing that 
affects performance creating fancy cache features. I am having enough issues 
with performance already...


>The set-mark causes the second undo to redo and could be replaced by a
>cursor movement instead, if one didn't want to mess up the mark
>location.
>
>So, although, once again, this doesn't work across buffers, using the
>undo list might be helpful for coding such a feature.
>

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