EditorConfig Linter

Validate .editorconfig files and check source files for compliance.

Commands

Validate .editorconfig syntax

python3 scripts/editorconfig-linter.py validate .editorconfig

Check files against .editorconfig rules

python3 scripts/editorconfig-linter.py check src/
python3 scripts/editorconfig-linter.py check src/ --editorconfig .editorconfig

Show effective config for a file

python3 scripts/editorconfig-linter.py show src/main.py

Fix violations automatically

python3 scripts/editorconfig-linter.py fix src/

Options

• --editorconfig PATH — Path to .editorconfig (default: auto-discover)
• --format text|json|markdown — Output format (default: text)
• --strict — Exit 1 on any violation (CI mode)
• --exclude PATTERN — Glob pattern to exclude (repeatable)
• --max-files N — Max files to check (default: 1000)

What It Checks

.editorconfig Syntax

• Invalid property names
• Invalid property values (indent_style must be tab/space, etc.)
• Duplicate sections
• Unreachable sections (shadowed by earlier glob)
• Missing root = true
• Invalid glob patterns

File Compliance (9 rules)

• indent_style — tabs vs spaces
• indent_size — number of spaces per indent
• end_of_line — lf, crlf, cr
• charset — utf-8, utf-8-bom, latin1, utf-16be, utf-16le
• trim_trailing_whitespace — trailing whitespace check
• insert_final_newline — file ends with newline
• max_line_length — line length limit
• tab_width — tab display width
• Mixed indentation detection

Exit Codes

• 0: No violations
• 1: Violations found (or --strict)
• 2: Invalid arguments or .editorconfig errors