check-code: add 'no tab indent' check for unified tests

and fix the offending tests accordingly

contrib/check-code.py

@@ -72,6 +72,7 b' testfilters = ['
 ]
 
 uprefix = r"^  \$ "
+uprefixc = r"^  > "
 utestpats = [
     (uprefix + r'.*\|\s*sed', "use regex test output patterns instead of sed"),
     (uprefix + r'(true|exit 0)', "explicit zero exit unnecessary"),
@@ -79,6 +80,7 b' utestpats = ['
     (uprefix + r'.*\|\| echo.*(fail|error)',
      "explicit exit code checks unnecessary"),
     (uprefix + r'set -e', "don't use set -e"),
+    (uprefixc + r'( *)\t', "don't use tabs to indent"),
 ]
 
 for p, m in testpats:

tests/test-hgweb-no-request-uri.t

@@ -53,7 +53,6 b' should be used from d74fc8dec2b4 onward '
   > 	print '---- ERRORS'
   > 	print errors.getvalue()
   > 	
-  > 
   > output = StringIO()
   > env['PATH_INFO'] = '/'
   > env['QUERY_STRING'] = 'style=atom'