Show '\011', '\012', and '\015' as '\t', '\n', '\r' in strings.
Switch from octal escapes to hex escapes for other nonprintable characters.
diff --git a/Doc/lib/libparser.tex b/Doc/lib/libparser.tex
index 96256ad..9ff3f42 100644
--- a/Doc/lib/libparser.tex
+++ b/Doc/lib/libparser.tex
@@ -432,7 +432,7 @@
                (297,
                 (298,
                  (299,
-                  (300, (3, '"""Some documentation.\012"""'))))))))))))))))),
+                  (300, (3, '"""Some documentation.\n"""'))))))))))))))))),
    (4, ''))),
  (4, ''),
  (0, ''))
@@ -537,7 +537,7 @@
 >>> found
 1
 >>> vars
-{'docstring': '"""Some documentation.\012"""'}
+{'docstring': '"""Some documentation.\n"""'}
 \end{verbatim}
 
 Once specific data can be extracted from a location where it is