//! Test-only inline helpers that keep `inline.rs` under the file-size ceiling.
/// Attaches punctuation-only `token` text to the previous wrapped code line.
///
/// `lines` holds the previously rendered lines, `current` is the pending
/// current-line buffer, and `token` is the punctuation fragment under test.
/// The return value is `true` when the punctuation was appended to the last
/// line. This test-only helper assumes `token` is already isolated as a single
/// rendered token and never panics.
pub