no_case_conflicts

Flag paths that differ only by case (e.g. README.md + readme.md). They can't coexist on macOS HFS+/APFS or Windows NTFS defaults, so a Linux-only dev committing both breaks checkouts for teammates.

Directories count too: a file Lib beside a directory lib/, or directories Docs/ + docs/, collide. The compared set is the in-scope files plus their ancestor directories, so a directory is reported when in-scope files live under two spellings of it, even if the directory path itself does not match paths:. A collision is reported once, at the shallowest colliding level, not again for every path beneath it; a separate collision inside one directory (docs/a.md + docs/A.md) is still reported alongside a Docs/ + docs/ one.

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 repo containing both README.md and readme.md

The rule fires on this repository:

• README.md✗

  ✗ error no-case

  case-insensitive collision: README.md (collides with: readme.md)

• other.txt✓
• readme.md✗

  ✗ error no-case

  case-insensitive collision: readme.md (collides with: README.md)

README.md

# upper

readme.md

# lower

With this .alint.yml:

version: 1
rules:
  - id: no-case
    kind: no_case_conflicts
    paths: "**"
    level: error

alint check reports:

--- README.md ------------------------------------------------------------------
  x  error    no-case
              case-insensitive collision: README.md (collides with: readme.md)

--- readme.md ------------------------------------------------------------------
  x  error    no-case
              case-insensitive collision: readme.md (collides with: README.md)

Summary (2 violations):
  x 2 errors
  0 passing * 1 failing

Filenames that stay unique when case is ignored

This repository is compliant:

• CONTRIBUTING.md✓
• README.md✓
• src/
• src/lib.rs✓
• src/util.rs✓

CONTRIBUTING.md

# guide

README.md

# hi

With this .alint.yml:

version: 1
rules:
  - id: no-case
    kind: no_case_conflicts
    paths: "**"
    level: error

alint check reports:

v All 1 rule(s) passed.