New commands shrink_line_above and shrink_line_below

[SoraTenshi]

I have checked whether such an issue already exists, however haven't found anything.
If it's a duplicate, i am sorry.

Describe your feature request

Basically the reversed behaviour of extend_line_above and extend_line_below.
The current behaviour seems rather inconsistent (having to go to visual mode and then manually unselecting. on extend_line_above this behaviour isn't even possible), so i that's why i have this proposal.

on shrink_line_above, the line of the topmost selection will be unselected.
on shrink_line_below the line of the bottommost selection wil be unselected.

[the-mikedavis]

Using these to undo extend_line_below and extend_line_above is better accomplished by #1596

On the one hand I could see myself using these commands (or a shrink_line version like #3046) but on the other it seems like a needless optimization on "hjkl in select-mode followed by X." With the addition of these commands we'd basically have the line-wise select-mode from vim.

on extend_line_above this behaviour isn't even possible

Flip the selection with A-; and then use hjkl in select mode

The current behaviour seems rather inconsistent

A bit of a nitpick: something cannot be inconsistent without differing from a baseline behavior. What is the current behavior inconsistent with respect to? IMO it would be inconsistent to have special handling for newlines.

[SoraTenshi]

Using these to undo extend_line_below and extend_line_above is better accomplished by #1596

On the one hand I could see myself using these commands (or a shrink_line version like #3046) but on the other it seems like a needless optimization on "hjkl in select-mode followed by X." With the addition of these commands we'd basically have the line-wise select-mode from vim.

Soft undo sounds like something, that'd help in this case.

A bit of a nitpick: something cannot be inconsistent without differing from a baseline behavior. What is the current behavior inconsistent with respect to? IMO it would be inconsistent to have special handling for newlines.

Well i see the inconsistency in e.g. that we have only one direction of doing something with newlines (namely: only extending), i see the incosistency as selections should IMO be bi-directional. But that's just my opinion.
I would be rather fine with just the soft-undo, i think this would already be a great addition.

[someone-aka-sum1]

This is not completed. Please reopen the issue.