trimming adapters at the beginning of the read and IUPAC nucleotide codes

[hrehrauer]

I have the situation where I do have adapters at the beginning of the read, as far as I can see, fastp does not support that, but it would be really helpful.

Another question, does fastp support IUPAC nucleotide codes?
http://www.bioinformatics.org/sms/iupac.html
This would also be very helpful.

Best
Hubert