From a133b923a2247c1f6e6ba91ef2b94e778702e8cb Mon Sep 17 00:00:00 2001
From: Yorick Peterse <yorickpeterse@gmail.com>
Date: Wed, 13 Aug 2014 01:28:43 +0200
Subject: [PATCH] Only emit extra T_SLASH tokens for "//".

---
 lib/oga/xpath/lexer.rl | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/lib/oga/xpath/lexer.rl b/lib/oga/xpath/lexer.rl
index c968996..a594cce 100644
--- a/lib/oga/xpath/lexer.rl
+++ b/lib/oga/xpath/lexer.rl
@@ -30,6 +30,13 @@ module Oga
       #
       AXIS_EMIT_NODE = %w{descendant-or-self parent self}
 
+      ##
+      # Axes that require an extra T_SLASH token to be emitted.
+      #
+      # @return [Array]
+      #
+      AXIS_EMIT_EXTRA_SLASH = %w{descendant-or-self}
+
       ##
       # @param [String] data The data to lex.
       #
@@ -246,7 +253,9 @@ module Oga
             add_token(:T_LPAREN)
             add_token(:T_RPAREN)
 
-            add_token(:T_SLASH) unless te == eof
+            if AXIS_EMIT_EXTRA_SLASH.include?(value) and te != eof
+              add_token(:T_SLASH)
+            end
           end
         }