NEW231660
Use GBK as fallback, not gb18030 
https://bugs.webkit.org/show_bug.cgi?id=231660
Summary Use GBK as fallback, not gb18030
Anne van Kesteren
Reported 2021-10-13 00:32:05 PDT
For users with a Chinese locale, it's better to use GBK as the fallback encoding. It uses the same decoder as gb18030, but it uses a more conservative encoder which is likely more compatible with servers. Chrome and Firefox already have (this) behavior (like this). (Unfortunately there are still some differences in the overall text encoding story. Mozilla would be up for standardizing those.) https://github.com/whatwg/html/pull/4714 changed this in the HTML Standard.
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Add attachment proposed patch, testcase, etc.
Chris Dumez
Comment 1 2021-10-13 10:15:19 PDT
Test page: https://hsivonen.com/test/moz/sniff-zh-hans.htm Says "windows-1252" on my machine. But apparently, if you change your system language to Chinese and reboot, it will say "gb18030" (not "gbk").
Radar WebKit Bug Importer
Comment 2 2021-10-19 10:34:05 PDT
<rdar://problem/84421509>
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