backdrop_add_icons in core/includes/common.inc
Adds icons to the page to make them available in JS and CSS files.
icon in core/includes/icon.inc
Return the markup for outputting an icon by a machine name.
icon_get_all_details in core/includes/icon.inc
Helper function to load icon details.
views_handler_field_file_icon::getIconName in core/modules/file/views/views_handler_field_file_icon.inc
Map file extensions to Phosphor icons.
views_handler_field_file_icon::renderImg in core/modules/file/views/views_handler_field_file_icon.inc
Render the icon as img tag.
_icon_test_path in core/modules/simpletest/tests/icon_test/icon_test.module
Page callback for displaying an icon path.