final_newline

File must end with a single \n. Fixable via file_append_final_newline.

Options

This rule takes no kind-specific options.

Plus the common paths, level, id, when, and expect_matches fields. This table is generated from the JSON Schema; option types and defaults are authoritative.

Example

A Markdown file missing its trailing newline

The rule fires on this repository:

• docs/
• docs/clean.md✓
• docs/missing.md✗

  ✗ error eof

  file does not end with a newline

docs/clean.md

# Hi

docs/missing.md

# No newline

With this .alint.yml:

version: 1
rules:
  - id: eof
    kind: final_newline
    paths: "docs/**/*.md"
    level: error

alint check reports:

--- docs/missing.md ------------------------------------------------------------
  x  error    eof
              file does not end with a newline

Summary (1 violation):
  x 1 error
  0 passing * 1 failing

Every file ends with a trailing newline

This repository is compliant:

• docs/
• docs/a.md✓
• docs/b.md✓
• docs/empty.md✓

docs/a.md

# Hi

docs/b.md

Hello
world

With this .alint.yml:

version: 1
rules:
  - id: eof
    kind: final_newline
    paths: "docs/**/*.md"
    level: error

alint check reports:

v All 1 rule(s) passed.