Template completionItem's sortText value may be undefined.

[jadestrong]

https://github.com/johnsoncodehk/volar/blob/46bb18087edf9dc4e9a8cb8cbf8ada126748f0de/packages/vue-language-service/src/vuePlugins/vueTemplateLanguage.ts#L664

        {
            "label": ":class",
            "kind": 10,
            "textEdit": {
                "range": {
                    "start": {
                        "line": 1,
                        "character": 14
                    },
                    "end": {
                        "line": 1,
                        "character": 15
                    }
                },
                "newText": ":class=\"$1\""
            },
            "insertTextFormat": 2,
            "sortText": "\u0000undefined",
            "data": {
                "uri": "file:///Users/jadestrong/Documents/JadeStrong/volar-starter/src/App.vue",
                "originalItem": {
                    "label": ":class",
                    "kind": 10,
                    "textEdit": {
                        "range": {
                            "start": {
                                "line": 1,
                                "character": 14
                            },
                            "end": {
                                "line": 1,
                                "character": 15
                            }
                        },
                        "newText": ":class=\"$1\""
                    },
                    "insertTextFormat": 2,
                    "sortText": "\u0000undefined",
                    "data": {
                        "mode": "html",
                        "tsItem": {
                            "name": "class",
                            "kind": "property",
                            "kindModifiers": "declare,optional",
                            "sortText": "11"
                        }
                    }
                },
                "pluginId": 2,
                "sourceMap": {
                    "lsType": "nonTs",
                    "embeddedDocumentUri": "file:///Users/jadestrong/Documents/JadeStrong/volar-starter/src/App.vue.html"
                }
            }
        },
        {
            "label": "v-bind:class",
            "kind": 10,
            "textEdit": {
                "range": {
                    "start": {
                        "line": 1,
                        "character": 14
                    },
                    "end": {
                        "line": 1,
                        "character": 15
                    }
                },
                "newText": "v-bind:class=\"$1\""
            },
            "insertTextFormat": 2,
            "sortText": "\u0000undefined",
            "data": {
                "uri": "file:///Users/jadestrong/Documents/JadeStrong/volar-starter/src/App.vue",
                "originalItem": {
                    "label": "v-bind:class",
                    "kind": 10,
                    "textEdit": {
                        "range": {
                            "start": {
                                "line": 1,
                                "character": 14
                            },
                            "end": {
                                "line": 1,
                                "character": 15
                            }
                        },
                        "newText": "v-bind:class=\"$1\""
                    },
                    "insertTextFormat": 2,
                    "sortText": "\u0000undefined",
                    "data": {
                        "mode": "html",
                        "tsItem": {
                            "name": "class",
                            "kind": "property",
                            "kindModifiers": "declare,optional",
                            "sortText": "11"
                        }
                    }
                },
                "pluginId": 2,
                "sourceMap": {
                    "lsType": "nonTs",
                    "embeddedDocumentUri": "file:///Users/jadestrong/Documents/JadeStrong/volar-starter/src/App.vue.html"
                }
            }
        },

The above problems occur when attribute completion is performed in the template .

[jadestrong]

emacs-lsp/lsp-mode#2681

[jadestrong]

In the completion result of JS, the sortText is a numeric string, and in template, it is a \u0000 + label

\u0000 in JSON data are not supported in Emacs . Can \u0000 be removed?

[johnsoncodehk]

You can try emacs-lsp/lsp-mode#2681 (comment)