=head1 Character case changing
-=for apidoc Am|char|toUPPER|char ch
-Converts the specified character to uppercase, if possible; otherwise returns
-the input character itself. Only ASCII characters are changed. Variant
+=for apidoc Am|U8|toUPPER|U8 ch
+Converts the specified character to uppercase. If the input is anything but an
+ASCII lowercase character, that input character itself is returned. Variant
C<toUPPER_A> is equivalent.
-=for apidoc Am|char|toLOWER|char ch
-Converts the specified character to lowercase, if possible; otherwise returns
-the input character itself. Only ASCII characters are changed. Variant
+=for apidoc Am|UV|toUPPER_uni|UV cp|U8* s|STRLEN* lenp
+Converts the Unicode code point C<cp> to its uppercase version, and
+stores that in UTF-8 in C<s>, and its length in bytes in C<lenp>. Note
+that the buffer pointed to by C<s> needs to be at least C<UTF8_MAXBYTES_CASE+1>
+bytes since the uppercase version may be longer than the original character.
+
+The first code point of the uppercased version is returned
+(but note, as explained just above, that there may be more.)
+
+=for apidoc Am|UV|toUPPER_utf8|U8* p|U8* s|STRLEN* lenp
+Converts the UTF-8 encoded character at C<p> to its uppercase version, and
+stores that in UTF-8 in C<s>, and its length in bytes in C<lenp>. Note
+that the buffer pointed to by C<s> needs to be at least C<UTF8_MAXBYTES_CASE+1>
+bytes since the uppercase version may be longer than the original character.
+
+The first code point of the uppercased version is returned
+(but note, as explained just above, that there may be more.)
+
+The input character at C<p> is assumed to be well-formed.
+
+=for apidoc Am|UV|toFOLD_uni|UV cp|U8* s|STRLEN* lenp
+Converts the Unicode code point C<cp> to its foldcase version, and
+stores that in UTF-8 in C<s>, and its length in bytes in C<lenp>. Note
+that the buffer pointed to by C<s> needs to be at least C<UTF8_MAXBYTES_CASE+1>
+bytes since the foldcase version may be longer than the original character.
+
+The first code point of the foldcased version is returned
+(but note, as explained just above, that there may be more.)
+
+=for apidoc Am|UV|toFOLD_utf8|U8* p|U8* s|STRLEN* lenp
+Converts the UTF-8 encoded character at C<p> to its foldcase version, and
+stores that in UTF-8 in C<s>, and its length in bytes in C<lenp>. Note
+that the buffer pointed to by C<s> needs to be at least C<UTF8_MAXBYTES_CASE+1>
+bytes since the foldcase version may be longer than the original character.
+
+The first code point of the foldcased version is returned
+(but note, as explained just above, that there may be more.)
+
+The input character at C<p> is assumed to be well-formed.
+
+=for apidoc Am|U8|toLOWER|U8 ch
+Converts the specified character to lowercase. If the input is anything but an
+ASCII uppercase character, that input character itself is returned. Variant
C<toLOWER_A> is equivalent.
+=for apidoc Am|U8|toLOWER_L1|U8 ch
+Converts the specified Latin1 character to lowercase. The results are undefined if
+the input doesn't fit in a byte.
+
+=for apidoc Am|U8|toLOWER_LC|U8 ch
+Converts the specified character to lowercase using the current locale's rules,
+if possible; otherwise returns the input character itself.
+
+=for apidoc Am|UV|toLOWER_uni|UV cp|U8* s|STRLEN* lenp
+Converts the Unicode code point C<cp> to its lowercase version, and
+stores that in UTF-8 in C<s>, and its length in bytes in C<lenp>. Note
+that the buffer pointed to by C<s> needs to be at least C<UTF8_MAXBYTES_CASE+1>
+bytes since the lowercase version may be longer than the original character.
+
+The first code point of the lowercased version is returned
+(but note, as explained just above, that there may be more.)
+
+=for apidoc Am|UV|toLOWER_utf8|U8* p|U8* s|STRLEN* lenp
+Converts the UTF-8 encoded character at C<p> to its lowercase version, and
+stores that in UTF-8 in C<s>, and its length in bytes in C<lenp>. Note
+that the buffer pointed to by C<s> needs to be at least C<UTF8_MAXBYTES_CASE+1>
+bytes since the lowercase version may be longer than the original character.
+
+The first code point of the lowercased version is returned
+(but note, as explained just above, that there may be more.)
+
+The input character at C<p> is assumed to be well-formed.
+
+=for apidoc Am|U8|toLOWER_LC|U8 ch
+Converts the specified character to lowercase using the current locale's rules,
+if possible; otherwise returns the input character itself.
+
+=for apidoc Am|UV|toTITLE_uni|UV cp|U8* s|STRLEN* lenp
+Converts the Unicode code point C<cp> to its titlecase version, and
+stores that in UTF-8 in C<s>, and its length in bytes in C<lenp>. Note
+that the buffer pointed to by C<s> needs to be at least C<UTF8_MAXBYTES_CASE+1>
+bytes since the titlecase version may be longer than the original character.
+
+The first code point of the titlecased version is returned
+(but note, as explained just above, that there may be more.)
+
+=for apidoc Am|UV|toTITLE_utf8|U8* p|U8* s|STRLEN* lenp
+Converts the UTF-8 encoded character at C<p> to its titlecase version, and
+stores that in UTF-8 in C<s>, and its length in bytes in C<lenp>. Note
+that the buffer pointed to by C<s> needs to be at least C<UTF8_MAXBYTES_CASE+1>
+bytes since the titlecase version may be longer than the original character.
+
+The first code point of the titlecased version is returned
+(but note, as explained just above, that there may be more.)
+
+The input character at C<p> is assumed to be well-formed.
+
=cut
-XXX Still undocumented isVERTWS_uni and _utf8, and the other toUPPER etc functions
+XXX Still undocumented isVERTWS_uni and _utf8; it's unclear what their names
+really should be. Also toUPPER_LC, which is subject to change.
Note that these macros are repeated in Devel::PPPort, so should also be
patched there. The file as of this writing is cpan/Devel-PPPort/parts/inc/misc
/*
=for apidoc to_utf8_upper
-Convert the UTF-8 encoded character at C<p> to its uppercase version and
-store that in UTF-8 in C<ustrp> and its length in bytes in C<lenp>. Note
-that the ustrp needs to be at least UTF8_MAXBYTES_CASE+1 bytes since
-the uppercase version may be longer than the original character.
-
-The first character of the uppercased version is returned
-(but note, as explained above, that there may be more.)
-
-The character at C<p> is assumed by this routine to be well-formed.
+Instead use L</toUPPER_utf8>.
=cut */
/*
=for apidoc to_utf8_title
-Convert the UTF-8 encoded character at C<p> to its titlecase version and
-store that in UTF-8 in C<ustrp> and its length in bytes in C<lenp>. Note
-that the C<ustrp> needs to be at least UTF8_MAXBYTES_CASE+1 bytes since the
-titlecase version may be longer than the original character.
-
-The first character of the titlecased version is returned
-(but note, as explained above, that there may be more.)
-
-The character at C<p> is assumed by this routine to be well-formed.
+Instead use L</toTITLE_utf8>.
=cut */
/*
=for apidoc to_utf8_lower
-Convert the UTF-8 encoded character at C<p> to its lowercase version and
-store that in UTF-8 in ustrp and its length in bytes in C<lenp>. Note
-that the C<ustrp> needs to be at least UTF8_MAXBYTES_CASE+1 bytes since the
-lowercase version may be longer than the original character.
-
-The first character of the lowercased version is returned
-(but note, as explained above, that there may be more.)
-
-The character at C<p> is assumed by this routine to be well-formed.
+Instead use L</toLOWER_utf8>.
=cut */
/*
=for apidoc to_utf8_fold
-Convert the UTF-8 encoded character at C<p> to its foldcase version and
-store that in UTF-8 in C<ustrp> and its length in bytes in C<lenp>. Note
-that the C<ustrp> needs to be at least UTF8_MAXBYTES_CASE+1 bytes since the
-foldcase version may be longer than the original character (up to
-three characters).
-
-The first character of the foldcased version is returned
-(but note, as explained above, that there may be more.)
-
-The character at C<p> is assumed by this routine to be well-formed.
+Instead use L</toFOLD_utf8>.
=cut */