//! ANSI-C quoting ($'...') escape sequence processing.
//!
//! Re-exported as `pub(super)` so `word.rs` can access it.
/// Process ANSI-C escape sequences inside `$'...'`.
/// `chars` is the character array, `pos` points to the first char of content.
/// Returns the processed content (without surrounding quotes).
/// Advances `pos` past the content.
pub