Type Alias DiffHunk 

pub type DiffHunk = (usize, usize, isize, isize);

Represents a text diff hunk with position and offset information.

Format: (old_start, old_length, line_offset, column_offset)

• old_start: Starting byte offset in the old version
• old_length: Length of the changed region in bytes
• line_offset: Line number change (new_line - old_line)
• column_offset: Column number change (new_column - old_column)