SetDetailsPrint thing

Let's say I got something like:

  DetailPrint "running foo.."
exec "$OUTDIR\bla.exe"
  DetailPrint "running moo.."
exec "$OUTDIR\moo.exe"
  DetailPrint "running bar.."
exec "$OUTDIR\bar.exe"
  DetailPrint "finished.." 

If I place an "SetDetailsPrint none" line there I won't see a thing, else without it I will see the "running" of foo, moo and bla and their exec actions. How it's possible to show only the "running" part without the "exec" actions? If it's possible.

SetDetailsPrint both
DetailPrint "running foo..."
SetDetailsPrint none
exec "$OUTDIRbla.exe"
SetDetailsPrint both
DetailPrint "running moo.."
SetDetailsPrint none
exec "$OUTDIRmoo.exe"
SetDetailsPrint both
DetailPrint "running bar.."
SetDetailsPrint none
exec "$OUTDIRbar.exe"
SetDetailsPrint both
DetailPrint "finished.."

sweet! thanks.