No symbol highlighting in Fortran code

[nujabse]

Thank you for the bug report

• I am using the latest version of lsp-mode related packages.
• I checked FAQ and Troubleshooting sections
• You may also try reproduce the issue using clean environment using the following command: M-x lsp-start-plain

Bug description

I'm using lsp-mode with fortls language server. Everything works just fine except that the symbol highlighting functionality is missing. I've made sure that the lsp-enable-symbol-highlighting is set to t, but still can not get symbol highlighting.

Steps to reproduce

Open fortran code with lsp-mode, move cursor to symbols in the code.

Expected behavior

Highlight symbols under the cursor, just like fortls works in Vscode and Atom editor:

Which Language Server did you use?

Fortran-language-server

OS

MacOS

Error callstack

Params: {
  "processId": null,
  "rootPath": "/Users/mathholic/git/UppASD",
  "clientInfo": {
    "name": "emacs",
    "version": "GNU Emacs 28.0.91 (build 1, x86_64-apple-darwin19.6.0, NS appkit-1894.60 Version 10.15.7 (Build 19H1713))\n of 2022-01-29"
  },
  "rootUri": "file:///Users/mathholic/git/UppASD",
  "capabilities": {
    "workspace": {
      "workspaceEdit": {
        "documentChanges": true,
        "resourceOperations": [
          "create",
          "rename",
          "delete"
        ]
      },
      "applyEdit": true,
      "symbol": {
        "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
          ]
        }
      },
      "executeCommand": {
        "dynamicRegistration": false
      },
      "didChangeWatchedFiles": {
        "dynamicRegistration": true
      },
      "workspaceFolders": true,
      "configuration": true,
      "codeLens": {
        "refreshSupport": true
      },
      "fileOperations": {
        "didCreate": false,
        "willCreate": false,
        "didRename": false,
        "willRename": false,
        "didDelete": false,
        "willDelete": false
      }
    },
    "textDocument": {
      "declaration": {
        "linkSupport": true
      },
      "definition": {
        "linkSupport": true
      },
      "implementation": {
        "linkSupport": true
      },
      "typeDefinition": {
        "linkSupport": true
      },
      "synchronization": {
        "willSave": true,
        "didSave": true,
        "willSaveWaitUntil": true
      },
      "documentSymbol": {
        "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
      },
      "formatting": {
        "dynamicRegistration": true
      },
      "rangeFormatting": {
        "dynamicRegistration": true
      },
      "rename": {
        "dynamicRegistration": true,
        "prepareSupport": true
      },
      "codeAction": {
        "dynamicRegistration": true,
        "isPreferredSupport": true,
        "codeActionLiteralSupport": {
          "codeActionKind": {
            "valueSet": [
              "",
              "quickfix",
              "refactor",
              "refactor.extract",
              "refactor.inline",
              "refactor.rewrite",
              "source",
              "source.organizeImports"
            ]
          }
        },
        "resolveSupport": {
          "properties": [
            "edit",
            "command"
          ]
        },
        "dataSupport": true
      },
      "completion": {
        "completionItem": {
          "snippetSupport": true,
          "documentationFormat": [
            "markdown",
            "plaintext"
          ],
          "resolveAdditionalTextEditsSupport": true,
          "insertReplaceSupport": true,
          "deprecatedSupport": true,
          "resolveSupport": {
            "properties": [
              "documentation",
              "details",
              "additionalTextEdits",
              "command"
            ]
          },
          "insertTextModeSupport": {
            "valueSet": [
              1,
              2
            ]
          }
        },
        "contextSupport": true
      },
      "signatureHelp": {
        "signatureInformation": {
          "parameterInformation": {
            "labelOffsetSupport": true
          }
        }
      },
      "documentLink": {
        "dynamicRegistration": true,
        "tooltipSupport": true
      },
      "hover": {
        "contentFormat": [
          "markdown",
          "plaintext"
        ]
      },
      "foldingRange": {
        "dynamicRegistration": true
      },
      "callHierarchy": {
        "dynamicRegistration": false
      },
      "publishDiagnostics": {
        "relatedInformation": true,
        "tagSupport": {
          "valueSet": [
            1,
            2
          ]
        },
        "versionSupport": true
      },
      "linkedEditingRange": {
        "dynamicRegistration": true
      }
    },
    "window": {
      "workDoneProgress": true,
      "showMessage": null,
      "showDocument": {
        "support": true
      }
    }
  },
  "initializationOptions": null,
  "workDoneToken": "1"
}


[Trace - 08:38:00 PM] Received response 'initialize - (1)' in 636ms.
Result: {
  "capabilities": {
    "completionProvider": {
      "resolveProvider": null,
      "triggerCharacters": [
        "%"
      ]
    },
    "definitionProvider": true,
    "documentSymbolProvider": true,
    "referencesProvider": true,
    "hoverProvider": true,
    "implementationProvider": true,
    "renameProvider": true,
    "workspaceSymbolProvider": true,
    "textDocumentSync": 1
  }
}

Anything else?

No response

[yyoncho]

As you can see here https://microsoft.github.io/language-server-protocol/specifications/specification-3-17/#serverCapabilities the server is supposed to declare documentHighlightProvider if it supports that feature. In this case, the server does not support highlighting thus we cannot have it on client side.