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| author | Sverker Eriksson <[email protected]> | 2017-03-08 14:46:24 +0100 |
|---|---|---|
| committer | Sverker Eriksson <[email protected]> | 2017-03-08 18:07:09 +0100 |
| commit | 32d13d59910a384ad09682cafc83c7300c96c694 (patch) | |
| tree | 1f5bfca2565243210b16a6de2bdc3ae66cbff8bb /lib/erl_interface/doc/src | |
| parent | 65b04e233e09e3cc2e0fda3c28e155b95c5a4baf (diff) | |
| download | otp-32d13d59910a384ad09682cafc83c7300c96c694.tar.gz otp-32d13d59910a384ad09682cafc83c7300c96c694.tar.bz2 otp-32d13d59910a384ad09682cafc83c7300c96c694.zip | |
erl_interface: Do not generate atoms on old latin1 ext format
Solved by letting ei_encode_atom_as ignore 'to_enc' argument
and always encode in UTF8 format.
Diffstat (limited to 'lib/erl_interface/doc/src')
| -rw-r--r-- | lib/erl_interface/doc/src/ei.xml | 20 |
1 files changed, 7 insertions, 13 deletions
diff --git a/lib/erl_interface/doc/src/ei.xml b/lib/erl_interface/doc/src/ei.xml index ddfb4d88a8..c3c776296c 100644 --- a/lib/erl_interface/doc/src/ei.xml +++ b/lib/erl_interface/doc/src/ei.xml @@ -421,22 +421,16 @@ typedef enum { <name><ret>int</ret><nametext>ei_x_encode_atom_len_as(ei_x_buff* x, const char *p, int len, erlang_char_encoding from_enc, erlang_char_encoding to_enc)</nametext></name> <fsummary>Encode an atom.</fsummary> <desc> - <p>Encodes an atom in the binary format with character encoding - <seealso marker="#erlang_char_encoding"><c>to_enc</c></seealso> - (Latin-1 or UTF-8). Parameter <c>p</c> is the name of the atom with + <p>Encodes an atom in the binary format. Parameter <c>p</c> is the name of the atom with character encoding <seealso marker="#erlang_char_encoding"><c>from_enc</c></seealso> (ASCII, Latin-1, or UTF-8). The name must either be <c>NULL</c>-terminated or - a function variant with a <c>len</c> parameter must be used. - If <c>to_enc</c> is set to the bitwise OR'd combination - <c>(ERLANG_LATIN1|ERLANG_UTF8)</c>, UTF-8 encoding is only used if the - atom string cannot be represented in Latin-1 encoding.</p> - <p>The encoding fails if <c>p</c> is an invalid string in encoding - <c>from_enc</c>, if the string is too long, or if it cannot be - represented with character encoding <c>to_enc</c>.</p> - <p>These functions were introduced in Erlang/OTP R16 as part of a first - step to support UTF-8 atoms. Atoms encoded with <c>ERLANG_UTF8</c> - cannot be decoded by earlier releases than R16.</p> + a function variant with a <c>len</c> parameter must be used.</p> + <p>The encoding fails if <c>p</c> is not a valid string in encoding + <c>from_enc</c>.</p> + + <p>Argument <c>to_enc</c> is ignored. As from Erlang/OTP 20 the encoding is always + done in UTF-8 which is readable by nodes as old as Erlang/OTP R16.</p> </desc> </func> |