(svn r10219) -Fix [FS#882,FS#890]: land under foundations was terraform when it shouldn't be terraformed.
--- a/src/clear_cmd.cpp Tue Jun 19 15:26:10 2007 +0000
+++ b/src/clear_cmd.cpp Tue Jun 19 15:34:43 2007 +0000
@@ -116,7 +116,7 @@
* basement and then you raise/lower the other corner. */
tileh = GetTileSlope(tile, &z);
if (tileh == unsafe_slope[mode] ||
- tileh == ComplementSlope(unsafe_slope[mode])) {
+ tileh == SLOPE_STEEP | ComplementSlope(unsafe_slope[mode])) {
_terraform_err_tile = tile;
_error_message = STR_1008_MUST_REMOVE_RAILROAD_TRACK;
return -1;