tests/heredoc.scm: Add test for (enable-syntax) macro

Test both compiled and non-compiled variants of the test in order to
stress the scenarios of *when* the read-macro is set.

Also change the (eval-when ...) case used:
- "compile": for when the code is being compiled only, and before its
  execution;
- "eval": for the the code is being evaluated only, during its
  execution.

Also from the Guile manual (via 'info (guile)Loading'):

    Changing ‘current-reader’ is typically useful to introduce local
    syntactic changes, such that code following the ‘fluid-set!’ call
    is read using the newly installed reader.  The ‘current-reader’
    change should take place at evaluation time when the code is
    evaluated, or at compilation time when the code is compiled:

         (eval-when (compile eval)
           (fluid-set! current-reader my-own-reader))

    The ‘eval-when’ form above ensures that the ‘current-reader’ change
    occurs at the right time.

1 files changed, 9 insertions, 2 deletions

diff --git a/Makefile b/Makefile
index fa340bd..8c1c50e 100644
--- a/Makefile
+++ b/Makefile
@@ -71,8 +71,15 @@ uninstall:
 		rm -f "$(DESTDIR)$(INFODIR)"/`basename $$i`; \
 	done
 
-check-guile:
-	$(GUILE) -L src/ tests/heredoc.scm
+
+check-guile-evaled:
+	GUILE_AUTO_COMPILE=0 $(GUILE) -L src/ tests/heredoc.scm
+
+check-guile-compiled:
+	GUILE_AUTO_COMPILE=1 $(GUILE) -L src/ tests/heredoc.scm
+
+check-guile: check-guile-evaled check-guile-compiled
+
 
 check: check-guile