Problem transfering to Monero address copied from SE comment using monero-wallet-cli. `Error: wrong address`

Question

I was trying to send some testnet coins to myself to an old address that I posted in a comment in this post. You can see that xmr_eric was successful in sending me some coins at the time. So today I tried to copy the address from that comment I made into monero-wallet-cli and do

transfer 9z1N6pssDU3hvq9X6iqxk2g2e4tfc2WqfiMcKLR2dE8mZVjGN4yCKBD4QE8j‌​xNMMCabNQNzDKLUnZSgu‌​EMMr4YPSBcMuJ8p 1,

but then I get:

Error: wrong address: 9z1N6pssDU3hvq9X6iqxk2g2e4tfc2WqfiMcKLR2dE8mZVjGN4yCKBD4QE8j‌​xNMMCabNQNzDKLUnZSgu‌​EMMr4YPSBcMuJ8p...

I assume it is something that happens when copying from that particular SE comment. I tried from two different computers and the two wallets gave the same error. Actually, if I run exactly the same command, copying the address from inside the wallet itself:

transfer 9z1N6pssDU3hvq9X6iqxk2g2e4tfc2WqfiMcKLR2dE8mZVjGN4yCKBD4QE8j‌​xNMMCabNQNzDKLUnZSgu‌​EMMr4YPSBcMuJ8p 1

I get the normal response:

transfer 9z1N6pssDU3hvq9X6iqxk2g2e4tfc2WqfiMcKLR2dE8mZVjGN4yCKBD4QE8jxNMMCabNQNzDKLUnZSguEMMr4YPSBcMuJ8p 1 The transaction fee is 0.026000000000. Is this okay? (Y/Yes/N/No)n

I compared the two strings in a text editor, and they are visibly identical... And, sure enough, if I just type the address, character by character, then it works fine. Do you know what this could be?

Answer 1

In the first two cases you have "\n" in the address.

9z1N6pssDU3hvq9X6iqxk2g2e4tfc2WqfiMcKLR2dE8mZVjGN4yCKBD4QE8j‌<\n>​ xNMMCabNQNzDKLUnZSgu‌​EMMr4YPSBcMuJ8p