+(defcustom org-babel-process-comment-text #'org-babel-trim
+ "Function called to process raw Org-mode text collected to be
+inserted as comments in tangled source-code files. The function
+should take a single string argument and return a string
+result. The default value is `org-babel-trim'."
+ :group 'org-babel
+ :type 'function)
+