@shhyou has better fixes and a better plan here

Revert "recent changes in the htdp languages have improved the messages here; make the expected results less specific in response"

This reverts commit aca2cf2.

Author: rfindler

drracket-test/tests/drracket/module-lang-test.rkt

@@ -854,21 +854,21 @@ f: contract violation
               Check failures:\s*
                 +check-satisfied for empty encountered an error[.]\s*
                 +:: +at line 11, column 0 +function call: expect.+function.+open parenthesis.+received '[(][)]\s*
-              at line 11, column 0.*
+              at line 11, column 0
                 +check-satisfied for local-even encountered an error[.]\s*
                 +:: +at line 12, column 0 +my-even: expect.+2 arguments.+found only 1\s*
-              at line 12, column 0.*
+              at line 12, column 0
                 +check-satisfied for real-my-even encountered an error[.]\s*
                 +:: +at line 13, column 0 +check-satisfied: expect.+function.+one argument.+second position.+real-my-even\s*
-              at line 13, column 0.*
+              at line 13, column 0
               > }))
         ;; Includes the flattened test result snips.
         (define full-ints-text
           (send ints get-text (send ints paragraph-start-position 2) 'eof #t))
         (define passed?
           (regexp-match? re full-ints-text))
         (unless passed?
-          (eprintf "FAILED line ~a: ~a\n  extra assertion expected: ~s\n\n  got: ~s\n"
+          (eprintf "FAILED line ~a: ~a\n  extra assertion expected: ~s\n\n  got: ~a\n"
                    (test-line test)
                    (test-definitions test)
                    re
@@ -1210,7 +1210,7 @@ f: contract violation
               Check failures:\s*
                 +check-expect encountered the following error instead of the expected value, 111[.]\s*
                 +:: +at line 12, column 14 oops:\s*
-              at line 12, column 0.*
+              at line 12, column 0
               > }))
         ;; Includes the flattened test result snips.
         (define full-ints-text