CocAction('format') using 2 spaces instead of 4

[Chadwick Dahlquist]

When I run :call CocAction('format') (and when it's called automatically on save via coc.preferences.formatOnSaveFiletypes), the buffer is formatted with 2 spaces instead of the default 4.

When I run rustfmt on the file directly, the correct 4 spaces are used.

No rustfmt.toml is in my project.

My indent related settings are set like so:

autocmd FileType rust setlocal ts=4 sw=4 expandtab equalprg=rustfmt

---

coc-rls 1.1.6
NVIM v0.5.0-532-g2ca8f02a6
rustfmt 1.4.14-nightly

[Qiming zhao]

Should be problem of your language server, checkout https://github.com/neoclide/coc.nvim/wiki/Debug-language-server#using-output-channel

[Chadwick Dahlquist]

I see this in the verbose output:

[Trace - 10:00:09 AM] Sending request 'textDocument/formatting - (6)'.
Params: {
    "textDocument": {
        "uri": "file:///<redacted>/src/lib.rs"
    },
    "options": {
        "tabSize": 2,
        "insertSpaces": true
    }
}

Where are those options being set?

Oh, after checking :set ts? I see it's set to tabstop=2. A clue emerges... Somebody somewhere is overriding my tabstop settings.

[Chadwick Dahlquist]

It was my editorconfig/editorconfig-vim causing the tabstop override. Unexpected.

Thanks for your help.

[Karl Liang]

I have similar issue here, but I get weird result.
I have no idea about what I did wrong. All of the tab settings are 4.
tabstop=4
softtabstop=4
shiftwidth=4
noexpandtab

my request format block is like this. (line 17 to line 29)

class hole {
public:
  int x;
  int y;
  hole *link;

  hole() : x(0), y(0), link(nullptr) {}

  friend ostream &operator<<(ostream &out, const hole &h) {
    out << "(" << h.x << "," << h.y << ")";
    return out;
  }
};

And I've checked the LSP server log as below.

[Trace - 7:31:06 PM] Sending request 'textDocument/rangeFormatting - (11)'.
Params: {
    "textDocument": {
        "uri": "</path/to/located/dir>/wormhole.cpp"
    },
    "range": {
        "start": {
            "line": 16,
            "character": 0
        },
        "end": {
            "line": 28,
            "character": 2
        }
    },
    "options": {
        "tabSize": 4,   <======
        "insertSpaces": false   <======
    }
}

And the log of result is like this

[Trace - 7:31:06 PM] Sending notification 'textDocument/didChange'.
Params: {
    "textDocument": {
        "version": 24,
        "uri": "</path/to/located/dir>/wormhole.cpp"
    },
    "contentChanges": [
        {
            "range": {
                "start": {
                    "line": 17,
                    "character": 0
                },
                "end": {
                    "line": 27,
                    "character": 1
                }
            },
            "rangeLength": 191,
            "text": "public:\n  int x;\n  int y;\n  hole *link;\n\n  hole() : x(0), y(0), link(nullptr) {}\n\n  friend ostream &operator<<(ostream &out, const hole &h) {\n    out << \"(\" << h.x << \",\" << h.y << \")\";\n    return out;\n  "
                              ^--------- insert two spaces at beginning??
        }
    ]
}

The output change is like this.

class hole {
public:
  int x;
  int y;
  hole *link;

  hole() : x(0), y(0), link(nullptr) {}

  friend ostream &operator<<(ostream &out, const hole &h) {
    out << "(" << h.x << "," << h.y << ")";
    return out;
  }
};

If I did build-in format command, like '=', the result would be normal.

class hole {
	public:
		int x;
		int y;
		hole *link;

		hole() : x(0), y(0), link(nullptr) {}

		friend ostream &operator<<(ostream &out, const hole &h) {
			out << "(" << h.x << "," << h.y << ")";
			return out;
		}
};

Should be problem of your language server, checkout https://github.com/neoclide/coc.nvim/wiki/Debug-language-server#using-output-channel

[Qiming zhao]

Bug of your rls

[Karl Liang]

Bug of your rls

Thanks a lot! I've spent lots of time in this problem.