Scale on picture does not propagate to labels

[marenamat]

When a label is put into picture and then a scale is applied on that picture, the label does not scale the right way.

Minimal Reproducer:

picture pic;
label(pic, Label("G"), (0,0));
shipout("pic", yscale(-1) * bpic);

Suggested patch:

diff --git a/base/plain_Label.asy b/base/plain_Label.asy
index 1e424ab1..96861218 100644
--- a/base/plain_Label.asy
+++ b/base/plain_Label.asy
@@ -294,7 +294,7 @@ struct Label {
     align=length(align)*unit(rotation(t)*align);
     pair S=t*position+align*labelmargin(p0)+shift(T)*0;
     if(settings.tex != "none")
-      label(f,s,size,embed(t)*shiftless(T),S,align,p0);
+      label(f,s,size,t*shiftless(T),S,align,p0);
     else
       fill(f,align(texpath(s,p0),S,align,p0),p0);
   }

[johncbowman]

See http://asymptote.sourceforge.net/doc/label.html#index-Label-1. Here is an example:

picture pic;
label(pic, Label("G",embed=Scale), (0,0));
shipout("pic", yscale(-1) * pic);