type the operators the walk had no rule for

`&&', the bitwise operators, the shifts and `++' each stopped with
`cannot infer'; an array operand came back as the array; a rank tie
went to whichever operand came first; and a toplevel `_' reached the
writer unsolved.

Makefile

@@ -96,10 +96,23 @@ sextest:
 	$(MAKE) -C ./tools/sextest sextest
 	cp ./tools/sextest/sextest .
 
-SEX_TEST_PROGRAMS = hello-world lists comments unicode serialize features \
-                    feature-flags lambdas compound-literals closures fixpoint \
-                    wildcards inference type-shapes unnamed-params \
-                    closure-signatures c99
+SEX_TEST_PROGRAMS = c99 \
+                    closure-signatures \
+                    closures \
+                    comments \
+                    compound-literals \
+                    feature-flags \
+                    features \
+                    fixpoint \
+                    hello-world \
+                    inference \
+                    lambdas \
+                    lists \
+                    serialize \
+                    type-shapes \
+                    unicode \
+                    unnamed-params \
+                    wildcards
 
 # Multi-module linking is checked end to end; see tests/modules/Makefile.
 check-modules: sexc