subs() performs "syntactic substitution" as in Maple; you can substitute

[ginac.git] / ginac / expairseq.cpp

diff --git a/ginac/expairseq.cpp b/ginac/expairseq.cpp
index 43754ea2dfc1ee16fb670d8259743923449c1a43..09a38af5931c14922e42761e2e1b016e6e5ef193 100644 (file)
--- a/ginac/expairseq.cpp
+++ b/ginac/expairseq.cpp
@@ -337,7 +337,7 @@ ex expairseq::subs(const lst &ls, const lst &lr) const
 {
        epvector *vp = subschildren(ls,lr);
        if (vp==0)
-               return *this;
+               return inherited::subs(ls, lr);
        
        return thisexpairseq(vp,overall_coeff);
 }