diff --git a/src/markup/engine/PhutilRemarkupEngine.php b/src/markup/engine/PhutilRemarkupEngine.php
--- a/src/markup/engine/PhutilRemarkupEngine.php
+++ b/src/markup/engine/PhutilRemarkupEngine.php
@@ -5,7 +5,7 @@
   const MODE_DEFAULT = 0;
   const MODE_TEXT = 1;
 
-  const MAX_CHILD_DEPTH = 8;
+  const MAX_CHILD_DEPTH = 32;
 
   private $blockRules = array();
   private $config = array();
diff --git a/src/markup/engine/__tests__/remarkup/quotes.txt b/src/markup/engine/__tests__/remarkup/quotes.txt
--- a/src/markup/engine/__tests__/remarkup/quotes.txt
+++ b/src/markup/engine/__tests__/remarkup/quotes.txt
@@ -2,8 +2,9 @@
 > I am utterly disgusted with the quality
 > of your inflight food service.
 ~~~~~~~~~~
-<blockquote><p>Dear Sir,<br />I am utterly disgusted with the quality<br />of your inflight food service.</p></blockquote>
+<blockquote><p>Dear Sir,
+ I am utterly disgusted with the quality
+ of your inflight food service.</p></blockquote>
 ~~~~~~~~~~
-> Dear Sir,
-> I am utterly disgusted with the quality
-> of your inflight food service.
+> Dear Sir, I am utterly disgusted with the quality of your inflight food service.
+
diff --git a/src/markup/engine/remarkup/blockrule/PhutilRemarkupEngineBlockRule.php b/src/markup/engine/remarkup/blockrule/PhutilRemarkupEngineBlockRule.php
--- a/src/markup/engine/remarkup/blockrule/PhutilRemarkupEngineBlockRule.php
+++ b/src/markup/engine/remarkup/blockrule/PhutilRemarkupEngineBlockRule.php
@@ -89,7 +89,7 @@
   }
 
   public function extractChildText($text) {
-    throw new Exception(pht('Not implemnted!'));
+    throw new Exception(pht('Not implemented!'));
   }
 
   protected function renderRemarkupTable(array $out_rows) {
diff --git a/src/markup/engine/remarkup/blockrule/PhutilRemarkupEngineRemarkupQuotesBlockRule.php b/src/markup/engine/remarkup/blockrule/PhutilRemarkupEngineRemarkupQuotesBlockRule.php
--- a/src/markup/engine/remarkup/blockrule/PhutilRemarkupEngineRemarkupQuotesBlockRule.php
+++ b/src/markup/engine/remarkup/blockrule/PhutilRemarkupEngineRemarkupQuotesBlockRule.php
@@ -1,44 +1,43 @@
 <?php
 
-/**
- * @group markup
- */
 final class PhutilRemarkupEngineRemarkupQuotesBlockRule
   extends PhutilRemarkupEngineBlockRule {
 
   public function getMatchingLineCount(array $lines, $cursor) {
-    $num_lines = 0;
+    $pos = $cursor;
 
-    if (preg_match("/^>/", $lines[$cursor])) {
-      $num_lines++;
-      $cursor++;
+    if (preg_match('/^>/', $lines[$pos])) {
+      do {
+        ++$pos;
+      } while (isset($lines[$pos]) && preg_match('/^>/', $lines[$pos]));
+    }
+
+    return ($pos - $cursor);
+  }
 
-      while (isset($lines[$cursor])) {
-        if (strlen(trim($lines[$cursor]))) {
-          $num_lines++;
-          $cursor++;
-          continue;
-        }
+  public function supportsChildBlocks() {
+    return true;
+  }
 
-        break;
-      }
+  public function extractChildText($text) {
+    $text = phutil_split_lines($text, true);
+    foreach ($text as $key => $line) {
+      $text[$key] = substr($line, 1);
     }
 
-    return $num_lines;
+    return array('', implode('', $text));
   }
 
   public function markupText($text, $children) {
-    $lines = array();
-    foreach (explode("\n", $text) as $line) {
-      $lines[] = $this->applyRules(preg_replace('/^>\s*/', '', $line));
-    }
-
     if ($this->getEngine()->isTextMode()) {
+      $lines = phutil_split_lines($children);
       return '> '.implode("\n> ", $lines);
     }
 
-    return hsprintf(
-      '<blockquote><p>%s</p></blockquote>',
-      phutil_implode_html(phutil_tag('br'), $lines));
+    return phutil_tag(
+      'blockquote',
+      array(),
+      $children);
   }
+
 }