_html5-input-types.scss

//************************************************************************//
// Generate a variable ($all-text-inputs) with a list of all html5
// input types that have a text-based input, excluding textarea.
// http://diveintohtml5.org/forms.html
//************************************************************************//
$inputs-list: 'input[type="email"]',
              'input[type="number"]',
              'input[type="password"]',
              'input[type="search"]',
              'input[type="tel"]',
              'input[type="text"]',
              'input[type="url"]',

              // Webkit & Gecko may change the display of these in the future
              'input[type="color"]',
              'input[type="date"]',
              'input[type="datetime"]',
              'input[type="datetime-local"]',
              'input[type="month"]',
              'input[type="time"]',
              'input[type="week"]';

$list-count: 0;
$unquoted-inputs-list: false;

@each $input-type in $inputs-list {
  @if $list-count == 0 {
    $unquoted-inputs-list: unquote($input-type);
    $list-count: $list-count + 1;
  }

  @else if $list-count > 0 {
    $unquoted-inputs-list: join($unquoted-inputs-list, unquote($input-type), comma);
  }
}

$all-text-inputs: $unquoted-inputs-list;

// You must use interpolation on the variable:
// #{$all-text-inputs}
//************************************************************************//
//    #{$all-text-inputs}, textarea {
//      border: 1px solid green;
//    }