Add should_rename_legacy flag to allow WHATWG-inspired renaming #264
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This PR adds a new
should_rename_legacy
flag, so that people can opt into renaming legacy encodings according to the W3C offshoot WHATWG group's suggested mapping here. This should address long-standing complaint about us returninggb2312
instead of at leastgbk
, and things like that. One interesting side effect of this change is that they suggest mapping ASCII and ISO-8859-1 to Windows-1252, so we will return Windows-1252 a lot more often with this flag on.