From Hugo’s Spanish Simplified, a text I would estimate was published in the 1910s:
“Teachers and students are hereby warned that any other book purporting to be Hugo’s Spanish System is nothing of the sort, but merely an imitation of the first edition, with just enough alterations to spoil the arrangement, and make the exercises laughable.*

*We may mention a very amusing instance of this. Not to copy our exercises exactly, the plagiarist altered one of our sentences, ‘Is your brother smoking?’ to ‘Is your sister smoking?’ thus avoiding a charge of copying word for word, but making himself ridiculous in the process.”