Fix copyright doctests

Signed-off-by: Philippe Ombredanne <pombredanne@nexb.com>

Author: pombredanne

src/cluecode/copyrights.py

@@ -4340,7 +4340,7 @@ def remove_code_comment_markers(s):
     Return ``s`` removing code comments such as C and C++ style comment markers and assimilated
 
     >>> remove_code_comment_markers(r"\\*#%; /\\/*a*/b/*c\\d#e%f \\*#%; /")
-    'a b c\\d e f'
+    'a b c\\\d e f'
     """
     return (s
         .replace('/*', ' ')

src/textcode/markup.py

@@ -147,7 +147,7 @@ def starts_or_ends_with_digit(s):
     True
     """
     # first and last character (works even if the string is empty)
-    return s and (s[:1].isdigit() or s[-1:].isdigit())
+    return bool(s and (s[:1].isdigit() or s[-1:].isdigit()))
 
 
 def get_demarkuped_text(text, splitter, keeper):