Re: [TUHS] Line Terminators in Text Files

Random832 <random832(a)fastmail.com> wrote: |On Mon, Sep 4, 2017, at 14:32, Doug McIlroy wrote: |> Because of the model 33, login names were case-insesitive. |> Come to think of it, I don't know whether they still are |> in general, though they must be for email to be delivered by |> login name. | |Looking at the code for getty in various versions, it looks like 4.2BSD |and System V changed this to "if the name was entered in all uppercase, |convert it to lowercase, else leave it alone" - 4.1cBSD and System III |(and earlier) had it unconditionally convert to lowercase, detecting |whether it was entered in all uppercase in order to set the tty mode. | |As for email, the email standards don't make any guarantee that the |username portion of addresses will be case insensitive. From what I can |find, sendmail by default converts all characters in the username |portion to lowercase (thus allowing email addresses to be |case-insensitive for delivery to local usernames that must be in all |lowercase), and has an option to treat it as case-sensitive instead. | |(All of this can probably be rounded down to "Usernames should be |defined as all-lowercase") If i recall correctly the email standards go for case-preserving all through, to leave it up to the destination to apply whatever is appropriate locally. --steffen | |Der Kragenbaer, The moon bear, |der holt sich munter he cheerfully and one by one |einen nach dem anderen runter wa.ks himself off |(By Robert Gernhardt)