Fix bind spec parser

src/options.go

@@ -938,7 +938,11 @@ Loop:
 			break
 		}
 		// Keep + or , at the end
-		masked += strings.Repeat(" ", loc[1]-1) + action[loc[1]-1:loc[1]]
+		lastChar := action[loc[1]-1]
+		if lastChar == '+' || lastChar == ',' {
+			loc[1]--
+		}
+		masked += strings.Repeat(" ", loc[1])
 		action = action[loc[1]:]
 	}
 	masked = strings.Replace(masked, "::", string([]rune{escapedColon, ':'}), -1)

src/options_test.go

@@ -499,3 +499,12 @@ func TestParseSingleActionListError(t *testing.T) {
 		t.Errorf("Failed to detect error")
 	}
 }
+
+func TestMaskActionContents(t *testing.T) {
+	original := ":execute((f)(o)(o)(b)(a)(r))+change-query@qu@ry@+up,x:reload:hello:world"
+	expected := ":execute                    +change-query       +up,x:reload            "
+	masked := maskActionContents(original)
+	if masked != expected {
+		t.Errorf("Not masked: %s", masked)
+	}
+}