🚀 go-pugleaf

In article <1992Sep9.163417.8803@corax.udac.uu.se> andersa@Riga.DoCS.UU.SE writes:
>Programmers are used to being able to perform case conversion on
>letters of the ASCII table by simply adding or subtracting a certain
>constant to the character code, given that the code is within a
>particular range (A-Z or a-z).  With later ISO standards, this is
>not quite such a simple task due to the sometimes ad-hoc layout of
>lowercase letters with respect to corresponding uppercase letters
>(examples available upon request), but it would still be possible
>using tables showing the relationship.

The upper/lower conversions were a fortunate hack that the original 7-bit
character set allowed.  These should nowadays be done by the application,
along with similar functions to add or remove accents.  The invariance
of tolower(toupper(x)) has been broken since ESZET -> "SS" -> "ss" first
happened.

Even if you want to use the simple facilities of the language, rather
than writing a custom function, you're still hampered by the <locale.h> stuff
being the trivial implementation in just about every Ansi library around :-(

G