It mentions fr'...' as a formatted raw string but doesn't say anything about rf'...'. Right now, in implementing PEP 498 support in Howl ( and, I assumed both were valid. Should the PEP be more specific?

BTW, at the rate language-python is going, GitHub will get syntax highlighting for f-strings in 2050. :D
Sent from my Nexus 5 with K-9 Mail. Please excuse my brevity.