import type { PathSpec } from '../../types.ts';
export declare const UNSUPPORTED_BUILTINS: ReadonlySet<string>;
export declare const NAMESPACE_COMMANDS: ReadonlySet<string>;
export declare const KEYWORDS: ReadonlySet<string>;
export declare const JOB_BUILTINS: ReadonlySet<string>;
export declare function dereferences(name: string, words: readonly (string | PathSpec)[]): boolean;
export declare function walksMounts(name: string, words: readonly (string | PathSpec)[]): boolean;
export declare function readsSubtrees(name: string, words: readonly (string | PathSpec)[]): boolean;
export declare const SLASH_KEEPS_LAST: ReadonlySet<string>;
export declare function followsLastComponent(name: string, words: readonly (string | PathSpec)[]): boolean;
/**
 * Insert POSIX's `--` after a program-carrying option's value.
 *
 * The handoff already has a spelling every parser honors, so the rule is
 * applied by writing one down rather than by teaching the parser a new
 * kind of option. The marker is inserted unconditionally, never skipped
 * because the line already carries one: CPython stops parsing at -c and
 * passes a later `--` through as data (`python3 -c p -- -u` gives the
 * program `['-c', '--', '-u']`), so the parser must consume exactly the
 * one added here and leave any typed one alone.
 *
 * Only the option run before the first operand is scanned. A -c after an
 * operand belongs to the program (`python3 s.py -c x`), and the operand
 * already ended option parsing by itself.
 *
 * The scan walks a short cluster letter by letter rather than matching
 * the word's prefix, because the carrier need not be first: CPython
 * reads `python3 -uc 'p' -v` and `python3 -uc'p' -v` the same way it
 * reads the unclustered forms, handing `-v` to the program.
 */
export declare function endOptionsAfterProgram(name: string, words: string[]): string[];
export declare const SHELL_NAMES: ReadonlySet<string>;
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