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| author | Jarkko Hietaniemi <jhi@iki.fi> | 2001-12-16 02:45:06 +0000 |
|---|---|---|
| committer | Jarkko Hietaniemi <jhi@iki.fi> | 2001-12-16 02:45:06 +0000 |
| commit | 9466bab696bbe701541ead3a883c2387f5110da2 (patch) | |
| tree | 070a0fde8d3f0dcf9fbcc1b789f7e4ee2c1ce265 /pod/perlunicode.pod | |
| parent | 76ccdbe266e63a2a3ac21a782e44a6b13093ac7f (diff) | |
| download | perl-9466bab696bbe701541ead3a883c2387f5110da2.tar.gz | |
Make creating UTF-8 surrogates a punishable act.
p4raw-id: //depot/perl@13707
Diffstat (limited to 'pod/perlunicode.pod')
| -rw-r--r-- | pod/perlunicode.pod | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/pod/perlunicode.pod b/pod/perlunicode.pod index 4102fc42a6..103b33b69a 100644 --- a/pod/perlunicode.pod +++ b/pod/perlunicode.pod @@ -740,6 +740,12 @@ and the decoding is $uni = 0x10000 + ($hi - 0xD8000) * 0x400 + ($lo - 0xDC00); +If you try to generate surrogates (for example by using chr()), you +will get an error because firstly a surrogate on its own is +meaningless, and secondly because Perl encodes its Unicode characters +in UTF-8 (not 16-bit numbers), which makes the encoded character doubly +illegal. + Because of the 16-bitness, UTF-16 is byteorder dependent. UTF-16 itself can be used for in-memory computations, but if storage or transfer is required, either UTF-16BE (Big Endian) or UTF-16LE |