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@atomicpoet It's neat but I don't like it.
1. If 'Calckey' is meant to be the label, that's a pattern with accessibility & usability problems.
2. Don't really understand the pattern (see prev) - looks like 'Calckey' is meant to be the label but it ends up the search term [placeholder]. Put another way, doesn't behave like other shortcode patterns
3. Expected behavior (which to me is 'search this site') doesn't match with actual behavior (which seems to be 'search default engine for this site').