Exclude code from markup, unless it is a git patch

inbox.py

@@ -1870,6 +1870,7 @@ def _validPostContent(baseDir: str, nickname: str, domain: str,
             print('WARN: invalid content warning ' + summary)
             return False
 
+    # check for patches before dangeousMarkup, which excludes code
     if isGitPatch(baseDir, nickname, domain,
                   messageJson['object']['type'],
                   summary,

utils.py

@@ -859,7 +859,7 @@ def dangerousMarkup(content: str, allowLocalNetworkAccess: bool) -> bool:
     """
     separators = [['<', '>'], ['&lt;', '&gt;']]
     invalidStrings = [
-        'script', 'noscript',
+        'script', 'noscript', 'code',
         'canvas', 'style', 'abbr',
         'frame', 'iframe', 'html', 'body',
         'hr', 'allow-popups', 'allow-scripts'