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I usually use vim inside screen over ssh and sometimes I notice problems with the entire line "shifting over" when inserting text in a vertical split.

Any one of these programs could be responsible for messing up redisplay, but when it does happen, it's distracting.

Is there a way to completely disable vertical splits in vim (even via C-w L or things that open automatic splits or quickfix buffers) and make vim behave as if it weren't compiled with support for them.

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    Why not just don't use splits instead of trying to make it impossible to open a split?
    – DJMcMayhem
    Aug 28, 2017 at 22:23
  • because it seems like the kind of thing that might be hidden away in some config setting somewhere. And I do want to horizontal/<c-w>s splits still. It's also possible that someone has encountered the pathological shifting behavior and a found another way to solve it.
    – Greg Nisbet
    Aug 28, 2017 at 22:26

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The feature which controls whether vim supports vertical splits is called +vertsplit and it is not possible to disable it alone at compile time. Specifically, since patch 7.4.1611, vim always supports vertical splits when feature +windows is enabled (FEAT_WINDOWS). The FEAT_VERTSPLIT preprocessor definition has been completely removed.

Incidentally, :help feature-list claims that +vertsplit is enabled only in the "normal" build and up, but this is wrong since +windows is enabled in the "small" build.

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