Use X as visual mapping for Exchange

[wellle]

As suggested by Drew Neil in today's VimCast:

Use the visual mapping X to avoid the delay after vc when changing visually selected text. Shadowing v_X should be no problem as v_D does the same and seems to be the more natural choice to delete the visually selected lines.

This fixes #14.

[tommcdo]

I'm really tempted, but this hides the standard {visual}X behaviour, and as far as I can tell there's no other way to do what it does. I can't decide what's worse -- hiding something or causing a delay. I need advice / opinions.

[wellle]

Oh yes there is: {visual}D is exactly the same as {visual}X.

[tommcdo]

The last sentence in that documentation talks about visual block mode, and what it mentions is only for v_D. It's a subtle difference, but a difference nonetheless. But the truth may be that no one ever users that behaviour.

[wellle]

Yes I would argue that you probably wouldn't use visual block mode to delete entire lines.

[tommcdo]

After some testing, it seems that in Visual and Linewise Visual, v_X is the same as v_D; in Blockwise Visual, v_X is the same as v_x and v_d. So I guess nothing is completely shadowed.

Can you reflect this change in the README and documentation?

[wellle]

Done.

[tommcdo]

Thanks!

[wellle]

👍

[tommcdo]

Whoops. We just broke the first demonstration in that Vimcast.

[nelstrom]

This looks good! I'll update the shownotes on Vimcast 65, maybe the video too if I'm feeling brave.