json.k

\d .j

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/enclose
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j:{$[10=abs t:@x;s$[|/x in a;,/f'x;x];99=t;e["{}"](j'!x),'":",'j'. x;-1<t;e["[]"].Q.fc[j']x;J[-t]@$x]}

/disclose
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k:{c x@&~v[x]&x in" \t\n\r"};

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k j x:"\"a \\"
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