Function ash_normalize_binding 

pub fn ash_normalize_binding(
    method: &str,
    path: &str,
    query: &str,
) -> Result<String, AshError>

Normalize a binding string to canonical form (v2.3.2+ format).

Bindings are in the format: METHOD|PATH|CANONICAL_QUERY

Normalization Rules

• Method is uppercased
• Path must start with /
• Path must not contain ? (use normalize_binding_from_url for combined path+query)
• Path is percent-decoded, normalized, then re-encoded (BUG-025 fix)
• Path has duplicate slashes collapsed (after decoding)
• Trailing slash is removed (except for root /)
• Query string is canonicalized (sorted, normalized)
• Parts are joined with | (pipe) separator

Path Normalization (BUG-025)

Paths are decoded before normalization to handle cases like:

• /api/%2F%2F/users → decoded → /api///users → normalized → /api/users
• /api/caf%C3%A9 → decoded → /api/café → re-encoded → /api/caf%C3%A9

Error on Embedded Query

If the path parameter contains a ?, an error is returned to prevent silent data loss. Use [normalize_binding_from_url] if you have a combined path+query string.

Example

use ash_core::ash_normalize_binding;

let binding = ash_normalize_binding("post", "/api//users/", "").unwrap();
assert_eq!(binding, "POST|/api/users|");

let binding_with_query = ash_normalize_binding("GET", "/api/users", "page=1&sort=name").unwrap();
assert_eq!(binding_with_query, "GET|/api/users|page=1&sort=name");

// Error if path contains '?'
assert!(ash_normalize_binding("GET", "/api/users?old=query", "new=query").is_err());