Intra-post anchor links don't work in Safari / Firefox

plkap74 · May 22, 2015, 1:19pm

I’ve been experimenting with anchor links inside of posts (links to content inside of a long post). I have read that you can’t use the ids because they get stripped. I used the name property instead and it works for Chrome but throws a very cryptic error in Safari.

Error: Syntax error, unrecognized expression: [name=anchor-name

It doesn’t give a useful trace so I can’t even tell where it is coming from. Is the anchor routing dealt with by Ember? Is there custom logic for that somewhere?

Example 1 (Live bug)

Try going to this link in Chrome (it works) but in Safari it throws an error and doesn’t work:

Example 2 (Reproduced bug)

works in Chrome, throws errors in safari


def cdn_relative_path(p)
  global_path_klass.cdn_relative_path(p)
end

def compress_node(from, to)
  to_path = "#{assets_path}/#{to}"
  assets = cdn_relative_path("/assets")
  assets_additional_path = (d = File.dirname(from)) == "." ? "" : "/#{d}"
  source_map_root = assets + assets_additional_path
  source_map_url = cdn_path "/assets/#{to}.map"
  base_source_map = assets_path + assets_additional_path

  # TODO: Remove uglifyjs when base image only includes terser
  js_compressor = `which terser`.empty? ? 'uglifyjs' : 'terser'

  cmd = <<~EOS
    #{js_compressor} '#{assets_path}/#{from}' -m -c -o '#{to_path}' --source-map "base='#{base_source_map}',root='#{source_map_root}',url='#{source_map_url}'"
  EOS

  STDERR.puts cmd
  result = `#{cmd} 2>&1`

plkap74 · May 26, 2015, 12:44pm

I’m sorry I should have been more specific, I meant where was the name anchor code happening. I dove in and found it in javascripts/discourse/lib/url.js. It looks like there is a missing bracket.

github.com

discourse/discourse/blob/f496982e7952aa13e86853250bcf0505a216f94f/app/assets/javascripts/discourse/lib/url.js#L92


},

// Scroll to the same page, different anchor
scrollToId: function(id) {
  if (Em.isEmpty(id)) { return; }

  jumpScheduled = true;
  Em.run.schedule('afterRender', function() {
    var $elem = $(id);
    if ($elem.length === 0) {
      $elem = $("[name=" + id.replace('#', ''));
    }
    if ($elem.length > 0) {
      $('html,body').scrollTop($elem.offset().top - $('header').height() - 15);
      jumpScheduled = false;
    }
  });
},

/**
  Our custom routeTo method is used to intelligently overwrite default routing

Not sure why that would break only production though…

I’ll submit a PR.

plkap74 · May 26, 2015, 12:53pm

PR submitted

https://github.com/discourse/discourse/pull/3503

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Intra-post anchor links don't work in Safari / Firefox

Example 1 (Live bug)

Example 2 (Reproduced bug)

Table of contents

Topic 1

Topic 2

TOC Markup

Intra-post anchor links don't work in Safari / Firefox

Example 1 (Live bug)

Example 2 (Reproduced bug)

Table of contents

Topic 1

Topic 2

TOC Markup

Related topics