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#2312 Prevent move filter from wrapping (#2658)

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given a list `A B C D` if I run `A B C D +[move:-1 [A]]` I get `B C A D`.  However, if I were to do `A B C D +[move:1[D]]` it doesn't wrap around, and I get `A B C D`.  This fixes that such that `A B C D +[move:-1 [A]]` gives 'A B C D`
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Matt Lauber 2016-12-16 18:58:45 +01:00 committed by Jeremy Ruston
parent 52d32fe3fd
commit 9c3a6976f0
1 changed files with 3 additions and 2 deletions
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core/modules/filters/x-listops.js
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@ -84,8 +84,9 @@ Extended filter operators to manipulate the current list.
var results = prepare_results(source),
index = results.indexOf(operator.operand),
count = parseInt(operator.suffix) || 1,
marker = results.splice(index, 1);
return results.slice(0, index + count).concat(marker).concat(results.slice(index + count));
marker = results.splice(index, 1),
offset = (index + count) > 0 ? index + count : 0;
return results.slice(0, offset).concat(marker).concat(results.slice(offset));
};
/*