[PATCH v3 7/7] send-email: suppress leading and trailing whitespaces before alias expansion

Matthieu Moy [off-list ref] writes:

Actually, once you have this, PATCH 6/7 becomes useless, right? (at
least, the test passes if I revert it)

It seems to me that doing this space trimming just once, inside or right
after split_at_commas would be clearer.

You're right, I put it twice because of there's occurrences of
sanitize_address which are not associated with expand_aliases, but it
seems that it's all taken care of separately in different regexp. So
there's no point to 6/7.

I agree, I'd like to put it right after split_at_commas in a separate
function "trim_list". Is it a good idea even if the function is one
line long ?