CoC 不向语言服务器发送自动完成请求消息

Question

我的 nvim 自动完成 window 在编辑 C++ 代码时没有出现。我一直在尝试遵循这个 debugging guideline 但我没有取得太大的成功。我正在使用 coc-settings.json:

中配置如下的 Kythe 语言服务器

{
    "languageserver": {
        "kythe": {
            "command": "/full/path/omitted/kythe_languageserver",
            "filetypes": ["python", "go", "java", "cpp", "cc", "c++", "proto"],
            "trace.server" : "verbose"
        }
    }
}

打开C++文件时运行:CocList services，可以看到语言服务器已经启动：

languageserver.kythe [running] python, go, java, cpp, cc, c++, proto

确实在 :CocCommand workspace.showOutput 中，有消息表明初始化成功：

[Trace - 4:45:05 PM] Received response 'initialize - (0)' in 264ms.
Result: {
    "capabilities": {
        "textDocumentSync": 1,
        "hoverProvider": true,
        "definitionProvider": true,
        "referencesProvider": true
    }
}

一个想法，这里是否缺少自动完成所需的功能？在任何情况下，当我编辑文件并尝试输入 std:: 期望该命名空间的某种形式的自动完成时，没有任何反应，发送到语言服务器的唯一消息似乎如下：

[Trace - 4:45:47 PM] Sending notification 'textDocument/didChange'.
Params: {
    "textDocument": {
        "uri": "[redacted]",
        "version": 4
    },
    "contentChanges": [
        {
            "text": "[redacted]"
        }
    ]
}

以我有限的知识，我很确定自动完成也需要将不同的消息类型发送到语言服务器，不是吗？ textDocument/didChange 好像只能更新状态。

编辑： nvim 请求的全套功能：

 "capabilities": {
        "workspace": {
            "applyEdit": true,
            "workspaceEdit": {
                "documentChanges": true,
                "resourceOperations": [
                    "create",
                    "rename",
                    "delete"
                ],
                "failureHandling": "textOnlyTransactional"
            },
            "didChangeConfiguration": {
                "dynamicRegistration": true
            },
            "didChangeWatchedFiles": {
                "dynamicRegistration": true
            },
            "symbol": {
                "dynamicRegistration": true,
                "symbolKind": {
                    "valueSet": [
                        1,
                        2,
                        3,
                        4,
                        5,
                        6,
                        7,
                        8,
                        9,
                        10,
                        11,
                        12,
                        13,
                        14,
                        15,
                        16,
                        17,
                        18,
                        19,
                        20,
                        21,
                        22,
                        23,
                        24,
                        25,
                        26
                    ]
                },
                "tagSupport": {
                    "valueSet": [
                        1
                    ]
                }
            },
            "executeCommand": {
                "dynamicRegistration": true
            },
            "configuration": true,
            "workspaceFolders": true
        },
        "textDocument": {
            "publishDiagnostics": {
                "relatedInformation": true,
                "versionSupport": false,
                "tagSupport": {
                    "valueSet": [
                        1,
                        2
                    ]
                }
            },
            "synchronization": {
                "dynamicRegistration": true,
                "willSave": true,
                "willSaveWaitUntil": true,
                "didSave": true
            },
            "completion": {
                "dynamicRegistration": true,
                "contextSupport": true,
                "completionItem": {
                    "snippetSupport": true,
                    "commitCharactersSupport": true,
                    "documentationFormat": [
                        "markdown",
                        "plaintext"
                    ],
                    "deprecatedSupport": true,
                    "preselectSupport": true
                },
                "completionItemKind": {
                    "valueSet": [
                        1,
                        2,
                        3,
                        4,
                        5,
                        6,
                        7,
                        8,
                        9,
                        10,
                        11,
                        12,
                        13,
                        14,
                        15,
                        16,
                        17,
                        18,
                        19,
                        20,
                        21,
                        22,
                        23,
                        24,
                        25
                    ]
                }
            },
            "hover": {
                "dynamicRegistration": true,
                "contentFormat": [
                    "markdown",
                    "plaintext"
                ]
            },
            "signatureHelp": {
                "dynamicRegistration": true,
                "signatureInformation": {
                    "documentationFormat": [
                        "markdown",
                        "plaintext"
                    ],
                    "parameterInformation": {
                        "labelOffsetSupport": true
                    }
                }
            },
            "definition": {
                "dynamicRegistration": true
            },
            "references": {
                "dynamicRegistration": true
            },
            "documentHighlight": {
                "dynamicRegistration": true
            },
            "documentSymbol": {
                "dynamicRegistration": true,
                "symbolKind": {
                    "valueSet": [
                        1,
                        2,
                        3,
                        4,
                        5,
                        6,
                        7,
                        8,
                        9,
                        10,
                        11,
                        12,
                        13,
                        14,
                        15,
                        16,
                        17,
                        18,
                        19,
                        20,
                        21,
                        22,
                        23,
                        24,
                        25,
                        26
                    ]
                },
                "hierarchicalDocumentSymbolSupport": true,
                "tagSupport": {
                    "valueSet": [
                        1
                    ]
                }
            },
            "codeAction": {
                "dynamicRegistration": true,
                "isPreferredSupport": true,
                "codeActionLiteralSupport": {
                    "codeActionKind": {
                        "valueSet": [
                            "",
                            "quickfix",
                            "refactor",
                            "refactor.extract",
                            "refactor.inline",
                            "refactor.rewrite",
                            "source",
                            "source.organizeImports"
                        ]
                    }
                }
            },
            "codeLens": {
                "dynamicRegistration": true
            },
            "formatting": {
                "dynamicRegistration": true
            },
            "rangeFormatting": {
                "dynamicRegistration": true
            },
            "onTypeFormatting": {
                "dynamicRegistration": true
            },
            "rename": {
                "dynamicRegistration": true,
                "prepareSupport": true
            },
            "documentLink": {
                "dynamicRegistration": true,
                "tooltipSupport": true
            },
            "typeDefinition": {
                "dynamicRegistration": true
            },
            "implementation": {
                "dynamicRegistration": true
            },
            "declaration": {
                "dynamicRegistration": true
            },
            "colorProvider": {
                "dynamicRegistration": true
            },
            "foldingRange": {
                "dynamicRegistration": true,
                "rangeLimit": 5000,
                "lineFoldingOnly": true
            },
            "selectionRange": {
                "dynamicRegistration": true
            }
        },
        "window": {
            "workDoneProgress": true
        }
    },

Answer 1

Kythe 语言服务器目前还不支持自动完成功能。

CoC 不向语言服务器发送自动完成请求消息

CoC not sending autocomplete request message to language server

c++

vim

vim-plugin

neovim

coc.nvim