fixed <nA> for n pointing to the buffer end

 * throws an error now instead of returning 0
 * for <A> positions referring to the buffer end are invalid
   (unlike many other commands).
 * has been broken for a very long time (possibly always?)

1 files changed, 5 insertions, 1 deletions

diff --git a/src/parser.cpp b/src/parser.cpp
index 1942281..b6ecc0f 100644
--- a/src/parser.cpp
+++ b/src/parser.cpp
@@ -1455,7 +1455,11 @@ StateStart::custom(gchar chr)
 		BEGIN_EXEC(this);
 		v = interface.ssm(SCI_GETCURRENTPOS) +
 		    expressions.pop_num_calc();
-		if (!Validate::pos(v))
+		/*
+		 * NOTE: We cannot use Validate::pos() here since
+		 * the end of the buffer is not a valid position for <A>.
+		 */
+		if (v < 0 || v >= interface.ssm(SCI_GETLENGTH))
 			throw RangeError("A");
 		expressions.push(interface.ssm(SCI_GETCHARAT, v));
 		break;