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Give a better error message when no arg is specified for :volume.
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@@ -616,6 +616,7 @@ const Player = Module("player", {
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function (args) {
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function (args) {
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let arg = args[0];
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let arg = args[0];
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dactyl.assert(arg, "E471: Argument required");
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dactyl.assert(/^[+-]?\d+$/.test(arg), "E488: Trailing characters");
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dactyl.assert(/^[+-]?\d+$/.test(arg), "E488: Trailing characters");
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let level = parseInt(arg, 10) / 100;
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let level = parseInt(arg, 10) / 100;
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