B_MAIL_ATTR_LABEL
node.RemoveAttr(B_MAIL_ATTR_LABEL);
else if (node.ReadAttrString(B_MAIL_ATTR_LABEL, &previousLabel) != B_OK
node.WriteAttrString(B_MAIL_ATTR_LABEL, &label);
string.SetToFormat(B_MAIL_ATTR_LABEL "==\"%s\"", label);
formula.SetToFormat(B_MAIL_ATTR_LABEL "==\"%s\"", label);
file.ReadAttrString(B_MAIL_ATTR_LABEL, ¤tLabel);
node.RemoveAttr(B_MAIL_ATTR_LABEL);
node.RemoveAttr(B_MAIL_ATTR_LABEL);
WriteAttrString(&node, B_MAIL_ATTR_LABEL, label);
_LaunchQuery(kSameLabelItem, B_MAIL_ATTR_LABEL, fLabel);
file.ReadAttrString(B_MAIL_ATTR_LABEL, &fLabel);
B_MAIL_ATTR_LABEL,