diff --git a/src/text/template/parse/lex.go b/src/text/template/parse/lex.go
index cdecd412ee..2cde4a2ca1 100644
--- a/src/text/template/parse/lex.go
+++ b/src/text/template/parse/lex.go
@@ -164,6 +164,7 @@ func (l *lexer) emit(t itemType) {
 
 // ignore skips over the pending input before this point.
 func (l *lexer) ignore() {
+	l.line += strings.Count(l.input[l.start:l.pos], "\n")
 	l.start = l.pos
 }
 
diff --git a/src/text/template/parse/lex_test.go b/src/text/template/parse/lex_test.go
index 2c73bb623a..cb01cd98b6 100644
--- a/src/text/template/parse/lex_test.go
+++ b/src/text/template/parse/lex_test.go
@@ -404,6 +404,9 @@ func equal(i1, i2 []item, checkPos bool) bool {
 		if checkPos && i1[k].pos != i2[k].pos {
 			return false
 		}
+		if checkPos && i1[k].line != i2[k].line {
+			return false
+		}
 	}
 	return true
 }
@@ -452,7 +455,7 @@ func TestDelims(t *testing.T) {
 }
 
 var lexPosTests = []lexTest{
-	{"empty", "", []item{tEOF}},
+	{"empty", "", []item{{itemEOF, 0, "", 1}}},
 	{"punctuation", "{{,@%#}}", []item{
 		{itemLeftDelim, 0, "{{", 1},
 		{itemChar, 2, ",", 1},
@@ -470,6 +473,24 @@ var lexPosTests = []lexTest{
 		{itemText, 13, "xyz", 1},
 		{itemEOF, 16, "", 1},
 	}},
+	{"trimafter", "{{x -}}\n{{y}}", []item{
+		{itemLeftDelim, 0, "{{", 1},
+		{itemIdentifier, 2, "x", 1},
+		{itemRightDelim, 5, "}}", 1},
+		{itemLeftDelim, 8, "{{", 2},
+		{itemIdentifier, 10, "y", 2},
+		{itemRightDelim, 11, "}}", 2},
+		{itemEOF, 13, "", 2},
+	}},
+	{"trimbefore", "{{x}}\n{{- y}}", []item{
+		{itemLeftDelim, 0, "{{", 1},
+		{itemIdentifier, 2, "x", 1},
+		{itemRightDelim, 3, "}}", 1},
+		{itemLeftDelim, 6, "{{", 2},
+		{itemIdentifier, 10, "y", 2},
+		{itemRightDelim, 11, "}}", 2},
+		{itemEOF, 13, "", 2},
+	}},
 }
 
 // The other tests don't check position, to make the test cases easier to construct.
@@ -485,7 +506,8 @@ func TestPos(t *testing.T) {
 					if !equal(items[i:i+1], test.items[i:i+1], true) {
 						i1 := items[i]
 						i2 := test.items[i]
-						t.Errorf("\t#%d: got {%v %d %q} expected  {%v %d %q}", i, i1.typ, i1.pos, i1.val, i2.typ, i2.pos, i2.val)
+						t.Errorf("\t#%d: got {%v %d %q %d} expected {%v %d %q %d}",
+							i, i1.typ, i1.pos, i1.val, i1.line, i2.typ, i2.pos, i2.val, i2.line)
 					}
 				}
 			}