For the sake of comparison, this is the pre-v3.80 recipe:
.Blunt arrow. [effort:1] [phys:hands,one-armed] *CARPENTRY* /45/ [patch:5]
{Branch} [remove] [patchwise] [noquality]
{Feather} (3) [remove] [patchwise] [noquality]
{Yarn} =1= [remove] [patchwise]
{Knife}
And here's the recipe after the arrowheads update:
.Blunt arrow. [effort:1] [phys:hands,one-armed] *CARPENTRY* %15% |0] /45/ [patch:5]
{Slender trunk} [remove]
{Knife} <Small knife>
The main difference is the lack of [noquality] tag, but this is offset by a +15% bonus to crafting quality.
Of course, you may add the tag to the diy_glossary.txt file in your game directory.
Now I've noticed there's an error in the recipe header: |0] (intended to be a 0 skill-up bonus but it's not properly enclosed in pipes)