wrap

func Wrap ¶

func Wrap(ctx context.Context, s string, w int, m Mode, mp bool) (Res, bool)

This is the core wrapper for full content blocks. It streams line-by-line and emits wrapped segments directly into a buffer to avoid building large intermediate slices. When mp is true, it also records how wrapped rows map back to the original logical lines (Sp + Rv). That mapping is required for cursor/selection navigation in the UI, so we keep it optional to avoid extra work when it is not needed.