Do not require a newline before line statements

As we discovered in the tests, the logic for line statements only
enforces that when they are found, the remaining portion of the line
is treated as a statement declaration. This means that a line statement
can follow things such as text, which the grammar did not previously
allow. The grammar also did not allow a line statement to be the first
line in a file, wich this change also now supports. All non-newline
whitespace preceding the line statement will continue to be stripped.

diff --git a/grammar.ebnf b/grammar.ebnf
index 039d57fb2cc2ce0daaa8ca8f861c9be4a567c57c..d68dbb200f3a9eb3c36b504ee0d9e76836fc2294 100644 (file)
--- a/grammar.ebnf
+++ b/grammar.ebnf
@@ -115,7 +115,7 @@ line_block_end
 \r
 line_block_open\r
     =\r
-    "\n" {SP}* line_block_open_symbol {SP}*\r
+    { !"\n" SP }* line_block_open_symbol { !"\n" SP }*\r
     ;\r
 \r
 line_block_open_symbol\r