How to disallow the red double arrow message in select or insert mode when typing?

[harvey-wei]

The LS is provided by coc-clangd.

{
    "diagnostic.showUnused": false,
    "diagnostic.level": "warning",
    "clangd.path": "~/.config/coc/extensions/coc-clangd-data/install/13.0.0/clangd_13.0.0/bin/clangd",
    "clangd.enabled": true,
    /*"clangd.disableDiagnostics": true, */
    "clangd.arguments": ["--background-index=true", "--header-insertion=never", "-clang-tidy=false",
        "-clang-tidy-checks=*"],
    /*"clangd.disableSnippetCompletion": true,*/
    "diagnostic.refreshOnInsertMode": false,
    /*
    "diagnostic.checkCurrentLine": false,
    "diagnostic.refreshOnSelectMode": false,
    */

    /*["*"] for all filetypes */
    "semanticTokens.filetypes":["*"],
    "list.previewSplitRight": true,
    /*"coc.preferences.jumpCommand": "vsplit", */
    /*
    "python.analysis.diagnosticSeverityOverrides": {"reportGeneralTypeIssues": "none",
            "reportOptionalMemberAccess": "none", "reportInvalidStringEscapeSequence": "none"}
    */
    "python.analysis.diagnosticSeverityOverrides": {"reportOptionalMemberAccess": "none",
            "reportInvalidStringEscapeSequence": "none"},

    "jedi.enable": false,
    "jedi.startupMessage": false,
    "jedi.markupKindPreferred": "plaintext",
    "jedi.trace.server": "off",
    "jedi.jediSettings.autoImportModules": [],
    "jedi.jediSettings.caseInsensitiveCompletion": true,
    "jedi.jediSettings.debug": false,
    "jedi.executable.command": "jedi-language-server",
    "jedi.executable.args": [],
    "jedi.codeAction.nameExtractFunction": "jls_extract_def",
    "jedi.codeAction.nameExtractVariable": "jls_extract_var",
    "jedi.completion.disableSnippets": false,
    "jedi.completion.resolveEagerly": false,
    "jedi.completion.ignorePatterns": [],
    "jedi.diagnostics.enable": true,
    "jedi.diagnostics.didOpen": true,
    "jedi.diagnostics.didChange": true,
    "jedi.diagnostics.didSave": true,
    "jedi.hover.enable": true,
    "jedi.hover.disable.keyword.all": false,
    "jedi.hover.disable.keyword.names": [],
    "jedi.hover.disable.keyword.fullNames": [],
    "jedi.workspace.extraPaths": [],
    "jedi.workspace.symbols.maxSymbols": 20,
    "jedi.workspace.symbols.ignoreFolders": [
    ".nox",
    ".tox",
    ".venv",
    "__pycache__",
    "venv"
    ]

   /* "languageserver": {
        "ccls": {
        "command": "ccls",
        "filetypes": ["c", "cc", "cpp", "c++", "objc", "objcpp"],
        "rootPatterns": [".ccls", "compile_commands.json", ".git/", ".hg/"],
        "initializationOptions": {
            "cache": {
              "directory": ".cache/ccls/"
            },
            "highlight": {"lsRanges": true }
          }
      }
    }
    */
}

[fannheyward]

Did you enable diagnostic.refreshOnInsertMode?

[harvey-wei]

I have set diagnostic.refreshOnInsertMode to false in coc-settings.json. But the red arrows still appeared when I was typing.

[chemzqm]

:h coc-config-diagnostic-enableSign or use autocmd with :h b:coc_diagnostic_disable