tests: implicitly generate empty .expected files.

Makefile (%.expected): New implicit rule. Whenever a test requires a
.expected file, if it is missing, we create an empty one.
This file will be treated as an intermediate by GNU Make, which means
that it will be deleted when make terminates.

* tests/012/compile.tl: Some of the .tl files no longer have
an .expected file, so we have to test for that in the
catenating logic.

* tests/008/call-2.expected,
* tests/008/no-stdin-hang.expected,
* tests/011/macros-3.expected,
* tests/011/patmatch.expected,
* tests/012/aseq.expected,
* tests/012/ashwin.expected,
* tests/012/compile.tl,
* tests/012/cont.expected,
* tests/012/defset.expected,
* tests/012/ifa.expected,
* tests/012/oop-seq.expected,
* tests/012/parse.expected,
* tests/012/quasi.expected,
* tests/012/quine.expected,
* tests/012/seq.expected,
* tests/012/struct.expected,
* tests/012/stslot.expected,
* tests/014/dgram-stream.expected,
* tests/014/in6addr-str.expected,
* tests/014/inaddr-str.expected,
* tests/014/socket-basic.expected,
* tests/015/awk-fconv.expected,
* tests/015/split.expected,
* tests/015/trim.expected,
* tests/016/arith.expected,
* tests/016/ud-arith.expected,
* tests/017/ffi-misc.expected,
* tests/018/chmod.expected: Empty file deleted.

29 files changed, 7 insertions, 2 deletions

diff --git a/Makefile b/Makefile
index fe007c88..f23f25c0 100644
--- a/Makefile
+++ b/Makefile
@@ -368,6 +368,9 @@ retest:
 	$(V)rm -rf tst
 	$(V)$(MAKE) tests
 
+%.expected:
+	$(V)touch $@
+
 tst/tests/000/binding.ok: TXR_OPTS := -B
 tst/tests/001/%: TXR_ARGS := tests/001/data
 tst/tests/001/query-1.ok: TXR_OPTS := -B
diff --git a/tests/008/call-2.expected b/tests/008/call-2.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/008/call-2.expected
+++ /dev/null
diff --git a/tests/008/no-stdin-hang.expected b/tests/008/no-stdin-hang.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/008/no-stdin-hang.expected
+++ /dev/null
diff --git a/tests/011/macros-3.expected b/tests/011/macros-3.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/011/macros-3.expected
+++ /dev/null
diff --git a/tests/011/patmatch.expected b/tests/011/patmatch.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/011/patmatch.expected
+++ /dev/null
diff --git a/tests/012/aseq.expected b/tests/012/aseq.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/012/aseq.expected
+++ /dev/null
diff --git a/tests/012/ashwin.expected b/tests/012/ashwin.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/012/ashwin.expected
+++ /dev/null
diff --git a/tests/012/compile.tl b/tests/012/compile.tl
index 36a285d3..f5b260cf 100644
--- a/tests/012/compile.tl
+++ b/tests/012/compile.tl
@@ -6,7 +6,9 @@
 (each ((f '#"aseq.tl ashwin.tl circ.tl cont.tl defset.tl except.tl \
              fini.tl ifa.tl man-or-boy.tl oop-mi.tl oop-seq.tl oop.tl \
              parse.tl quasi.tl quine.tl seq.tl stslot.tl"))
-  (file-append-string %expected-file%
-                      (file-get-string `@{%this-dir%}/@(m^ #/.*[.]/ f)expected`))
+  (let ((exf `@{%this-dir%}/@(m^ #/.*[.]/ f)expected`))
+    (when (path-exists-p exf)
+      (file-append-string %expected-file%
+                          (file-get-string exf))))
   (compile-file f "temp.tlo")
   (remove-path "temp.tlo"))
diff --git a/tests/012/cont.expected b/tests/012/cont.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/012/cont.expected
+++ /dev/null
diff --git a/tests/012/defset.expected b/tests/012/defset.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/012/defset.expected
+++ /dev/null
diff --git a/tests/012/ifa.expected b/tests/012/ifa.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/012/ifa.expected
+++ /dev/null
diff --git a/tests/012/oop-seq.expected b/tests/012/oop-seq.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/012/oop-seq.expected
+++ /dev/null
diff --git a/tests/012/parse.expected b/tests/012/parse.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/012/parse.expected
+++ /dev/null
diff --git a/tests/012/quasi.expected b/tests/012/quasi.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/012/quasi.expected
+++ /dev/null
diff --git a/tests/012/quine.expected b/tests/012/quine.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/012/quine.expected
+++ /dev/null
diff --git a/tests/012/seq.expected b/tests/012/seq.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/012/seq.expected
+++ /dev/null
diff --git a/tests/012/struct.expected b/tests/012/struct.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/012/struct.expected
+++ /dev/null
diff --git a/tests/012/stslot.expected b/tests/012/stslot.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/012/stslot.expected
+++ /dev/null
diff --git a/tests/014/dgram-stream.expected b/tests/014/dgram-stream.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/014/dgram-stream.expected
+++ /dev/null
diff --git a/tests/014/in6addr-str.expected b/tests/014/in6addr-str.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/014/in6addr-str.expected
+++ /dev/null
diff --git a/tests/014/inaddr-str.expected b/tests/014/inaddr-str.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/014/inaddr-str.expected
+++ /dev/null
diff --git a/tests/014/socket-basic.expected b/tests/014/socket-basic.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/014/socket-basic.expected
+++ /dev/null
diff --git a/tests/015/awk-fconv.expected b/tests/015/awk-fconv.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/015/awk-fconv.expected
+++ /dev/null
diff --git a/tests/015/split.expected b/tests/015/split.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/015/split.expected
+++ /dev/null
diff --git a/tests/015/trim.expected b/tests/015/trim.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/015/trim.expected
+++ /dev/null
diff --git a/tests/016/arith.expected b/tests/016/arith.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/016/arith.expected
+++ /dev/null
diff --git a/tests/016/ud-arith.expected b/tests/016/ud-arith.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/016/ud-arith.expected
+++ /dev/null
diff --git a/tests/017/ffi-misc.expected b/tests/017/ffi-misc.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/017/ffi-misc.expected
+++ /dev/null
diff --git a/tests/018/chmod.expected b/tests/018/chmod.expected
deleted file mode 100644
index e69de29b..00000000
--- a/tests/018/chmod.expected
+++ /dev/null