/usr/share/sass/spec/scss/mix/ is in sass-spec-data 0~20150516-2.
This file is owned by root:root, with mode 0o755.
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/usr/share/sass/spec/scss/mix/expected.compact.css
/usr/share/sass/spec/scss/mix/expected.compressed.css
/usr/share/sass/spec/scss/mix/expected.expanded.css
/usr/share/sass/spec/scss/mix/expected_output.css
/usr/share/sass/spec/scss/mix/input.scss
/usr/share/sass/spec/scss/mixin-content-selectors/expected.compact.css
/usr/share/sass/spec/scss/mixin-content-selectors/expected.compressed.css
/usr/share/sass/spec/scss/mixin-content-selectors/expected.expanded.css
/usr/share/sass/spec/scss/mixin-content-selectors/expected_output.css
/usr/share/sass/spec/scss/mixin-content-selectors/input.scss
/usr/share/sass/spec/scss/mixin-content-with-no-block/expected.compact.css
/usr/share/sass/spec/scss/mixin-content-with-no-block/expected.compressed.css
/usr/share/sass/spec/scss/mixin-content-with-no-block/expected.expanded.css
/usr/share/sass/spec/scss/mixin-content-with-no-block/expected_output.css
/usr/share/sass/spec/scss/mixin-content-with-no-block/input.scss
/usr/share/sass/spec/scss/mixin-content/expected.compact.css
/usr/share/sass/spec/scss/mixin-content/expected.compressed.css
/usr/share/sass/spec/scss/mixin-content/expected.expanded.css
/usr/share/sass/spec/scss/mixin-content/expected_output.css
/usr/share/sass/spec/scss/mixin-content/input.scss
/usr/share/sass/spec/scss/mixin_with_keyword_args/expected.compact.css
/usr/share/sass/spec/scss/mixin_with_keyword_args/expected.compressed.css
/usr/share/sass/spec/scss/mixin_with_keyword_args/expected.expanded.css
/usr/share/sass/spec/scss/mixin_with_keyword_args/expected_output.css
/usr/share/sass/spec/scss/mixin_with_keyword_args/input.scss
/usr/share/sass/spec/scss/mixins_with_args/expected.compact.css
/usr/share/sass/spec/scss/mixins_with_args/expected.compressed.css
/usr/share/sass/spec/scss/mixins_with_args/expected.expanded.css
/usr/share/sass/spec/scss/mixins_with_args/expected_output.css
/usr/share/sass/spec/scss/mixins_with_args/input.scss
/usr/share/sass/spec/scss/mixins_with_empty_args/expected.compact.css
/usr/share/sass/spec/scss/mixins_with_empty_args/expected.compressed.css
/usr/share/sass/spec/scss/mixins_with_empty_args/expected.expanded.css
/usr/share/sass/spec/scss/mixins_with_empty_args/expected_output.css
/usr/share/sass/spec/scss/mixins_with_empty_args/input.scss