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cca6c4c698
Problem: Sincee057b38e70#20757 we support empty key in JSON encode/decode, but we don't allow it in RPC object => Vim dict conversion. But empty string is a valid key in Vim dicts and the msgpack spec. Empty string key was disallowed in7c01d5ff92(2014) but that commit/PR doesn't explicitly discuss it, so presumably it was a "seems reasonable" decision (or Vimscript didn't allow empty keys until later). Solution: Remove the check in `object_to_vim()`. Note that `tv_dict_item_alloc_len` will invoke `memcpy(…, 0)` but that's allowed by the C spec: https://stackoverflow.com/a/3751937/152142