Fix regression from inclusion of real escapes

Inclusion of "real" \033 seemed to work but confused readline when
working with long history lines

dotfiles/bash/post.bashrc

@@ -10,14 +10,11 @@
 
 __make_ps1d() {
     lastrv=$(cat /var/tmp/bash-rv/$$.lastrv)
-    if [ $lastrv -gt 126 ];
+    if [ $lastrv -gt 0 ];
     then
-        echo " \$"
-    elif [ $lastrv -gt 0 ];
-    then
-        echo " \$"
+        echo "$lastrv"
     else
-        echo " \$"
+        echo ""
     fi
 }
 
@@ -35,8 +32,8 @@ make_ps1() {
     ps1G='$(__git_ps1 "(%s)")';
     ps1g="$green$ps1G$normal";
     ps1D='$(__make_ps1d $?)';
-    ps1d="$ps1D";
-    echo "$svrc$ps1u@$ps1h:$ps1w$ps1g$ps1d$normal ";
+    ps1d="$red$ps1D$normal";
+    echo "$svrc$ps1u@$ps1h:$ps1w$ps1g$ps1d\$ ";
 }
 
 make_ps2() {