JG>
  >  >> What possible difference could that make?  Even in routines such as
  >  >> C's stricmp() "ignoring case" is generally
performed by converting
  >  >> both compared characters to uppercase for the duration of the
  >  >> compare.
  >
  >  >   John is implying that there's not necessarily a one-to-one mapping
  >  >   between lower and upper case in all character sets.
  >
  > The normal way of handling that case is to not map the characters that have
  > no other-case equivalent.
JG>

  Consider the Greek alphabet.

  > JdeBP <
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