Automatically convert some quotes to blockquotes

app/assets/javascripts/discourse/dialects/autoquote_dialect.js

@@ -0,0 +1,23 @@
+/**
+  If a line contains a single quote, convert it to a blockquote. For example:
+
+  "My fake plants died because I did not pretend to water them."
+
+  Would be:
+
+  <blockquote>My fake plants died because I did not pretend to water them.</blockquote>
+
+**/
+Discourse.Dialect.registerInline('"', function(str, match, prev) {
+
+  // Make sure we're on a line boundary
+  var last = prev[prev.length - 1];
+  if (typeof last === "string") { return; }
+
+  if (str.length > 2 && str.charAt(0) === '"' && str.charAt(str.length-1) === '"') {
+    var inner = str.substr(1, str.length-2);
+    if (inner.indexOf('"') === -1 && inner.indexOf("\n") === -1) {
+      return [str.length, ['blockquote', inner]];
+    }
+  }
+});

test/javascripts/lib/markdown_test.js

@@ -29,6 +29,14 @@ test("basic cooking", function() {
   cooked("brussel sproutes are *awful*.", "<p>brussel sproutes are <em>awful</em>.</p>", "it doesn't swallow periods.");
 });
 
+test("Auto quoting", function() {
+  cooked('"My fake plants died because I did not pretend to water them."',
+         "<p><blockquote>My fake plants died because I did not pretend to water them.</blockquote></p>",
+         "it converts single line quotes to blockquotes");
+  cooked('"hello\nworld"', "<p>\"hello<br/>world\"</p>", "It doesn't convert multi line quotes");
+  cooked('"hello "evil" trout"', '<p>"hello "evil" trout"</p>', "it doesn't format quotes in the middle of a line");
+});
+
 test("Traditional Line Breaks", function() {
   var input = "1\n2\n3";
   cooked(input, "<p>1<br/>2<br/>3</p>", "automatically handles trivial newlines");