correct more edge cases with new engine

app/assets/javascripts/pretty-text/emoji.js.es6

@@ -64,7 +64,7 @@ export function buildEmojiUrl(code, opts) {
     url = opts.customEmoji[code];
   }
 
-  const noToneMatch = code.match(/(.?[\w-]*)?:?/);
+  const noToneMatch = code.match(/([^:]+):?/);
   if (noToneMatch && !url && (emojiHash.hasOwnProperty(noToneMatch[1]) || aliasHash.hasOwnProperty(noToneMatch[1]))) {
     url = opts.getURL(`/images/emoji/${opts.emojiSet}/${code.replace(/:t/, '/')}.png`);
   }

app/assets/javascripts/pretty-text/engines/discourse-markdown/html-img.js.es6

@@ -49,7 +49,7 @@ function rule(state, startLine, endLine) {
   let oldParentType = state.parentType;
   state.parentType = 'paragraph';
 
-  token = state.push('paragraph_open', 'p', 0);
+  token = state.push('paragraph_open', 'p', 1);
   token.map = [startLine, state.line];
 
   token = state.push('inline', '', 0);

spec/components/pretty_text_spec.rb

@@ -561,19 +561,15 @@ describe PrettyText do
     html = <<~HTML
       <p>a <img><br>
       <img></p>
-      <p>
-      <img><br>
-      <img></p>
-      <p>
+      <p><img><br>
       <img></p>
+      <p><img></p>
       <p>a</p>
-      <p>
-      <img></p>
+      <p><img></p>
       <ul>
       <li>li</li>
       </ul>
-      <p>
-      <img></p>
+      <p><img></p>
       <pre><code class="lang-auto">test
       </code></pre>
       <pre><code class="lang-auto">test
@@ -600,8 +596,7 @@ describe PrettyText do
     HTML
 
     html = <<~HTML
-      <p>
-      <img><br>
+      <p><img><br>
       <img src="https://awesome.cdn/original/9/9/99c9384b8b6d87f8509f8395571bc7512ca3cad1.jpg"><br>
       <img src="https://awesome.cdn/original/9/9/99c9384b8b6d87f8509f8395571bc7512ca3cad1.jpg"><br>
       <img src="https://awesome.cdn/original/9/9/99c9384b8b6d87f8509f8395571bc7512ca3cad1.jpg"></p>
@@ -661,6 +656,9 @@ describe PrettyText do
     expect(PrettyText.cook("hello 🤷‍♀️")).to eq("<p>hello <img src=\"/images/emoji/twitter/woman_shrugging.png?v=5\" title=\":woman_shrugging:\" class=\"emoji\" alt=\":woman_shrugging:\"></p>")
   end
 
+  it "should not treat a non emoji as an emoji" do
+    expect(PrettyText.cook(':email,class_name:')).not_to include('emoji')
+  end
 
   it "supports href schemes" do
     SiteSetting.allowed_href_schemes = "macappstore|steam"
@@ -791,6 +789,7 @@ HTML
     expect(PrettyText.cook(" http://a.com")).not_to include('onebox')
     expect(PrettyText.cook("a\n http://a.com")).not_to include('onebox')
     expect(PrettyText.cook("sam@sam.com")).not_to include('onebox')
+    expect(PrettyText.cook("<img src='a'>\nhttp://a.com")).to include('onebox')
   end
 
   it "can handle bbcode" do