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A picture of a snippet of rust code, with a popup window partially formatted but with a lingering light background

I'm trying to find the face that applies to this tooltip in LSP in rust-mode with rust-analyzer, but I'm not seeing anything when I search on:

  • tooltip
  • lsp
  • popup
  • posframe
  • lsp-rust-analyze
  • faces
  • lsp-ui

If there's a general method that works to identify faces you can't put the cursor on, or if someone knows what that annoyingly light background face is, I would love the help.

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It seems like this is lsp-ui-doc-background.

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  • That doesn't answer the question, which is how to identify.
    – Drew
    Oct 16, 2021 at 18:35
  • @Drew I am answering this > or if someone knows what that annoyingly light background face is
    – Ivan Dimitrov Yonchovski
    Oct 17, 2021 at 12:33
  • OK. But FWIW, your answer would be even better if you mentioned how you found out what the face is.
    – Drew
    Oct 17, 2021 at 17:17
  • Unfortunately nothing by that name comes up in the customization search, and lsp-ui-doc-background isn't a face that my copy of Emacs knows of.
    – Ashley Lake
    Nov 1, 2021 at 16:29

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