Bugfixes: Consistent escaping in various literals. Double

backslash codes for single backslash. Output clause can be empty.

* parser.l (char_esc): Backslash handled.
Use internal_error rather than abort.
(REGCHAR, LITCHAR): Backslash added to lexical syntax.

* parser.y (output_clause): Allow empty output clause.

1 files changed, 2 insertions, 0 deletions

diff --git a/parser.y b/parser.y
index e6e66d1d..2ad2d53f 100644
--- a/parser.y
+++ b/parser.y
@@ -271,6 +271,8 @@ output_clause : OUTPUT ')' o_elems '\n'
                 END newl        { $$ = nil;
                                   yyerror("obsolete output syntax: trailing material"); }
               | OUTPUT ')' newl
+                END newl        { $$ = list(output_s, nao); }
+              | OUTPUT ')' newl
                 out_clauses
                 END newl        { $$ = list(output_s, $4, nao); }
               | OUTPUT exprs ')' newl