If they want a fight, Trump will give them one! On this issue, he cannot afford to show any weakness.
Sure he could afford what some would prefer to characterize as weakness, when instead it can be, and should be reasonableness.
The mountain of conventioneers need to discuss and form Party planks, though they may do best underselling whatever they come up with. Let it be all dog whistle, all the time? People will get sick and tired of hearing that d-g phrase aimed at mild & vague-y sounding GOP version of hope n' changey. The mountain then goes to Muhammad -- uh, in this case, I mean the guy with the most delegates going into the convention. That guy sifts through a bit of this, and of that, agreeing here and there, putting down one, or two things, setting those aside in some brief rhetorical flourish, then becomes one with the mountain. Then we win in November (I do fervently hope).