I routinely render email and website addresses with upper and lower case to make them intelligible to the naked eye. A long address before and after the '@' can be difficult to comprehend and especially hard to type if copy/paste is not feasible. As Radoslow says, case differentiated addresses should probably be sorted as equivalents.
A separate question is whether case differentiated addresses should be reported separately. For example, if I want a count of addresses used, do I care about the distinction or not? For most purposes probably not, but obscuring the distinction entirely is somewhat misleading depending on the motive for investigating. . . J.O.Skip Robinson Southern California Edison Company Electric Dragon Team Paddler SHARE MVS Program Co-Manager 323-715-0595 Mobile 626-543-6132 Office ⇐=== NEW [email protected] -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of R.S. Sent: Monday, July 17, 2017 7:06 AM To: [email protected] Subject: (External):Re: Sorting email addresses W dniu 2017-07-17 o 15:56, Paul Gilmartin pisze: > On 2017-07-17, at 05:58, R.S. wrote: >> .... >> 2. Uppercase and lowercase sorted in same order. ... >> > By Internet standard, the domain is case-insensitive. RFC 822 et al. > leave interpretation of the local-part entirely to the target site, > which is free to treat it as either case-sensitive or insensitive. Theoretically yes, but practically I have never met case-sensitive email address, even the part before @ character. Of course this is very subjective, limited, 22-years old observation, not a rule. YMMV ;-) It is more likely to observe "cultural uppercase" like Radoslaw.Skorupka instead of radoslaw.skorupka, but both should be sorted as equals. -- Radoslaw Skorupka Lodz, Poland ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
