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I'm using a Bootstrap theme and would like to add a glyphicon to the "Add new comment" link so that it comes out something like this:

<a href="..."><span class="glyphicon glyphicon-comment"></span> Add new comment</a>

I've considered overriding the link's default text, but I'm not sure how to do it for this string of text, and I don't like the idea of adding HTML to a translatable string.

Using THEME_preprocess_links(&$variables), I used Kint to explore $variables['links']['comment-add'], but I couldn't find any public methods that would allow me to edit the link contents.

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  • I am not sure about adding a span inside the link, but cant that THEME_preprocess_links add css classes by ['attributes'] to the link itself? Jan 15, 2016 at 17:40
  • Yep, see this question. But adding the glyphicon class directly to the <a> element isn't how it's done in bootstrap and it affects the formatting of the link's content.
    – Chris
    Jan 15, 2016 at 17:43
  • Bootstrap glyphicons need their own span with no content and no other classes. I usually build this kind of bootstrap with inline templates (the fastest way), but the correct way would be to build a custom link template for this.
    – 4uk4
    Jan 15, 2016 at 17:48
  • Not sure how a custom link template will help here. Links are generated via \Drupal\Core\Utility\LinkGenerator from what I can tell, which does: return $generated_link->setGeneratedLink('<a' . $attributes . '>' . $variables['text'] . '</a>');. It looks like I'd need to form a new link and edit the $variables['text'] section...
    – Chris
    Jan 15, 2016 at 18:13
  • See comment_node_links_alter() and \Drupal\comment\CommentLinkBuilder::buildCommentedEntityLinks()
    – user21641
    Jan 15, 2016 at 19:02

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