py/makeqstrdata: Add special case to handle \n qstr.

py/makeqstrdata.py

@@ -93,6 +93,12 @@ def parse_input_headers(infiles):
 
                 # get the qstr value
                 qstr = match.group(1)
+
+                # special case to specify control characters
+                if qstr == '\\n':
+                    qstr = '\n'
+
+                # work out the corresponding qstr name
                 ident = qstr_escape(qstr)
 
                 # don't add duplicates