At last I know what “rocambolesque” means. And the writer Ponson du Terrail, who created the character Rocambole, believed in speed and eschewed perfectionism. That gave rise to interesting errors:
“Her hands were as cold as those of a snake” (Elle avait les mains aussi froides que celles d’un serpent)
“With one hand, he raised the dagger, and with the other he said…” (D’une main il leva son poignard, et de l’autre il lui dit…”)
Axé.