diff options
Diffstat (limited to 'utf8.c')
| -rw-r--r-- | utf8.c | 8 |
1 files changed, 5 insertions, 3 deletions
@@ -33,7 +33,7 @@ #include "perl.h" #ifndef EBCDIC -/* Separate prototypes needed because in ASCII systems these +/* Separate prototypes needed because in ASCII systems these are * usually macros but they still are compiled as code, too. */ PERL_CALLCONV UV Perl_utf8n_to_uvchr(pTHX_ const U8 *s, STRLEN curlen, STRLEN *retlen, U32 flags); PERL_CALLCONV U8* Perl_uvchr_to_utf8(pTHX_ U8 *d, UV uv); @@ -57,8 +57,10 @@ within non-zero characters. /* =for apidoc is_ascii_string -Returns true if first C<len> bytes of the given string are ASCII (i.e. none -of them even raise the question of UTF-8-ness). +Returns true if the first C<len> bytes of the given string are the same whether +or not the string is encoded in UTF-8 (or UTF-EBCDIC on EBCDIC machines). That +is, if they are invariant. On ASCII-ish machines, only ASCII characters +fit this definition, hence the function's name. See also is_utf8_string(), is_utf8_string_loclen(), and is_utf8_string_loc(). |