>My guess is that they used that spelling because "unwrapping" is a real word, and that's how it's spelled. Yes, obviously, but you're missing OP's point. When

>My guess is that they used that spelling because "unwrapping" is a real word, and that's how it's spelled. Yes, obviously, but you're missing OP's point. When the keyword is backticked it doesn't really make sense to adjust its spelling based on the addition of the -ing affix, since in some cases this would also require deletion of letters at the end of the keyword -- which clearly should remain unaltered when backticked. Thus, the only sensible and consistent rule is not to make spelling adjustments when adding -ing to backticked keywords. Not that any of this matters at all!