📝 editorconfig: max_line_length is ignored when using LSP

[chrisgrieser]

When setting max_line_length to a value, that value is respected when using biome --format, but ignored when using the biome LSP from inside the editor.

Environment information

CLI:
  Version:                      1.9.1
  Color support:                true

Platform:
  CPU Architecture:             aarch64
  OS:                           macos

Environment:
  BIOME_LOG_PATH:               unset
  BIOME_LOG_PREFIX_NAME:        unset
  BIOME_CONFIG_PATH:            unset
  NO_COLOR:                     unset
  TERM:                         "xterm-256color"
  JS_RUNTIME_VERSION:           "v22.8.0"
  JS_RUNTIME_NAME:              "node"
  NODE_PACKAGE_MANAGER:         "npm/10.8.2"

Biome Configuration:
  Status:                       Loaded successfully
  Formatter disabled:           false
  Linter disabled:              false
  Organize imports disabled:    false
  VCS disabled:                 false

Formatter:
  Format with errors:           true
  Indent style:                 Tab
  Indent width:                 2
  Line ending:                  Lf
  Line width:                   80
  Attribute position:           Auto
  Bracket spacing:              BracketSpacing(true)
  Ignore:                       []
  Include:                      []

JavaScript Formatter:
  Enabled:                      true
  JSX quote style:              Double
  Quote properties:             AsNeeded
  Trailing commas:              All
  Semicolons:                   Always
  Arrow parentheses:            Always
  Bracket spacing:              unset
  Bracket same line:            false
  Quote style:                  Double
  Indent style:                 unset
  Indent width:                 unset
  Line ending:                  unset
  Line width:                   unset
  Attribute position:           unset

JSON Formatter:
  Enabled:                      true
  Indent style:                 unset
  Indent width:                 unset
  Line ending:                  unset
  Line width:                   unset
  Trailing Commas:              unset

CSS Formatter:
  Enabled:                      true
  Indent style:                 unset
  Indent width:                 unset
  Line ending:                  unset
  Line width:                   unset
  Quote style:                  Double

GraphQL Formatter:
  Enabled:                      false
  Indent style:                 unset
  Indent width:                 unset
  Line ending:                  unset
  Line width:                   unset
  Bracket spacing:              unset
  Quote style:                  unset

Workspace:
  Open Documents:               0

Configuration

biome.jsonc

{
  "formatter": {
    "useEditorconfig": true
  }
}

editorconfig

root = true

[*]
max_line_length = 100

Playground link

I do not know how to showcase the cli and LSP difference via the Playground.

to reproduce

• biome check --write → uses line length of 100 (correct)
• running LSP formatting (in my case: vim.lsp.buf.format() in nvim) → uses line length 80 (false)

Code of Conduct

• I agree to follow Biome's Code of Conduct