Carbon: [Carbon X] Search button styles not present in search--x mixin

[jendowns]

Detailed description

The optional buttons that can be added to a Search component have no styles in the search--x mixin for Carbon X. In the React library, those buttons are referring to as SearchFilterButton and SearchLayoutButton

(See React storybook for example for the buttons I'm referring to: http://react.carbondesignsystem.com/?selectedKind=Search&selectedStory=custom%20buttons&full=0&addons=1&stories=1&panelRight=0&addonPanel=storybook%2Fstories%2Fstories-panel)

These are styles for v9 (https://github.com/IBM/carbon-components/blob/master/src/components/search/_search.scss#L113):

  .#{$prefix}--search-button {
    @include reset;
    border: 0;
    transition: $transition--base;
    height: rem(40px);
    width: rem(40px);
    min-width: rem(40px);
    margin-left: $spacing-2xs;
    background-color: $ui-01;
    position: relative;
    padding: 0;
    outline: 1px solid transparent;
    order: 2;
  }

  .#{$prefix}--search-button svg {
    position: relative;
    top: -1px;
    box-sizing: border-box;
    vertical-align: middle;
    transition: $transition--base;
    fill: $hover-primary;
    height: 1rem;
    width: 1rem;
}

However there are no equivalent styles for v10 & the buttons currently render as un-styled.

[asudoh]

Missing style for v10, fix will be non-breaking.

[stale[bot]]

We've marked this issue as stale because there hasn't been any activity for a couple of weeks. If there's no further activity on this issue in the next three days then we'll close it. Thanks for your contributions.

[asudoh]

Seems still valid.