parser: #; tests and bugfixes.

This is motivated by the recent crash regression in the #;
comment out mechanism. The parser doesn't have adequate
coverage in the test suite.

* tests/012/syntax.tl: New file, for testing syntax.
A problem was found #;.expr did not work inside a list,
only at top level. It required a space before the dot.

* parser.y  (listacc): A couple of productions to handle
hash-semicolon immediately followed by a dot without
any whitespace, and then by an expression.

* y.tab.c.shipped: Regenerated.

1 files changed, 20 insertions, 0 deletions

diff --git a/tests/012/syntax.tl b/tests/012/syntax.tl
new file mode 100644
index 00000000..6b6f331a
--- /dev/null
+++ b/tests/012/syntax.tl
@@ -0,0 +1,20 @@
+(load "../common")
+
+#;(commented out list)
+#;3.14
+#;abc
+#;.foo
+#; .foo
+#;a.b
+
+'(#;.foo)
+'(#; .foo)
+
+(test
+  #;(commented out list)
+  #;3.14
+  #;abc
+  #;.foo
+  #; .foo
+  #;a.b
+  42 42)