/**
 * Decode the body of a $'...' word to the text it names.
 *
 * Follows bash 5.2 (lib/sh/strtrans.c, under a UTF-8 locale): simple
 * escapes, 1-3 octal digits with the value masked to a byte, \xHH
 * bytes, \u and \U values written through u32toutf8 (surrogates and
 * values past Unicode come out as raw UTF-8-shaped bytes), \cX control
 * characters (X of `?` is DEL, an escaped backslash counts as one
 * operand), and any other or incomplete escape kept verbatim, backslash
 * included. A NUL truncates the rest of this word segment, the C-string
 * behavior; the segment alone is cut, so `x$'a\0b'y` still expands to
 * `xay`.
 */
export declare function decodeAnsiC(content: string): string;
export declare function unescapeUnquoted(text: string): string;
export declare function unescapeDquoted(text: string): string;
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