Re: Deprecate and remove case-insensitive constants?

On Sun, Sep 24, 2017 at 10:36:02AM +0100, Tony Marston wrote: > we began to read and write. I have been working in the computer > industry since the early 1970s on a variety of mainframe, mini- and > micro-computers, and a variety of languages. and this was all case > insensitive. It was only the invention of unix which threw a spanner > in the works. I remember those early days; things have changed. Back then case was not an issue: * ASR33 Teletypes were upper case only * Punch cards machines were upper case only Yes: you could sometimes get lower case, but it was hard. Case conversion was easy: * ASCII - 7 bit characters, easy * EBCDIC - 8 bit characters, easy (OK: national variants of ASCII/EBCDIC, but still 7/8 bit). Some machines, eg CDC, had 6 bit character set - upper case only. These days we use Unicode, a 21 bit character set. Case conversion is hard and, as others have explained, can be ambiguous, non-reversible, ... > If you wish to enforce case sensitivity in projects which you > control then go ahead. Just don't try to enforce it on everybody > else. May I suggest that you create your own fork of PHP and leave the rest of us alone. -- Alain Williams Linux/GNU Consultant - Mail systems, Web sites, Networking, Programmer, IT Lecturer. +44 (0) 787 668 0256 http://www.phcomp.co.uk/ Parliament Hill Computers Ltd. Registration Information: http://www.phcomp.co.uk/contact.php #include <std_disclaimer.h>