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@mixin retina-image($filename, $background-size, $extension: png, $retina-filename: null, $retina-suffix: _2x, $asset-pipeline: $asset-pipeline) {
@if $asset-pipeline {
background-image: image-url("#{$filename}.#{$extension}");
} @else {
background-image: url("#{$filename}.#{$extension}");
}
@include hidpi {
@if $asset-pipeline {
@if $retina-filename {
background-image: image-url("#{$retina-filename}.#{$extension}");
} @else {
background-image: image-url("#{$filename}#{$retina-suffix}.#{$extension}");
}
} @else {
@if $retina-filename {
background-image: url("#{$retina-filename}.#{$extension}");
} @else {
background-image: url("#{$filename}#{$retina-suffix}.#{$extension}");
}
}
background-size: $background-size;
}
}
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