X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Fpower.cpp;h=40ba3376a2af6d17d65cbc73fd992314325fe019;hp=1b28b509ac4bd35ef4bbcf7777e40069bcf056f2;hb=a58e540b7d534d64c1c87cc253b3cf40bf58df06;hpb=da6a61ba2586263e46ade4b67dca121506c2bff9

diff --git a/ginac/power.cpp b/ginac/power.cpp
index 1b28b509..40ba3376 100644
--- a/ginac/power.cpp
+++ b/ginac/power.cpp
@@ -1010,8 +1010,13 @@ ex power::expand_mul(const mul & m, const numeric & n, unsigned options, bool fr
 		return _ex1;
 	}
 
+	// do not bother to rename indices if there are no any.
+	if ((!(options & expand_options::expand_rename_idx)) 
+			&& m.info(info_flags::has_indices))
+		options |= expand_options::expand_rename_idx;
 	// Leave it to multiplication since dummy indices have to be renamed
-	if (get_all_dummy_indices(m).size() > 0 && n.is_positive()) {
+	if ((options & expand_options::expand_rename_idx) &&
+		(get_all_dummy_indices(m).size() > 0) && n.is_positive()) {
 		ex result = m;
 		exvector va = get_all_dummy_indices(m);
 		sort(va.begin(), va.end(), ex_is_less());