How to close diagnostic messages?

[inferiorhumanorgans]

Is there any way to do this? The way it stands file-level diagnostic messages in particular clobber the content making it difficult to do… well… anything. The specific warning is irrelevant (and meaningful most of the time) and not something I want to turn off permanently.

[minanagehsalalma]

I don't think there is a dedicated "dismiss/close the diagnostic message overlay" command today.

From the current static commands list, the documented diagnostic actions are things like:

• <space>d for the diagnostic picker
• <space>D for the workspace diagnostic picker
• [d / ]d and [D / ]D to jump between diagnostics

I couldn't find a separate command for "hide the in-buffer diagnostic rendering until I ask for it again", so this looks more like a missing feature than a hidden keybind.

If the warning itself is useful but the inline/file-level display is the problem, the practical workaround is usually to navigate diagnostics via the picker/jump commands and tune the LSP/linter's display settings outside Helix.