[U-Boot] [RFC, PATCH v4 08/16] hashtable: import/export entries with flags

[Wolfgang Denk <wd@denx.de>]

Dear Takahiro,

In message <20190717082525.891-9-takahiro.akashi@linaro.org> you wrote:
> 'flags' value of all the entries in hashtable should be preserved across
> save/load of U-Boot environment context.
> To hold such information in an exported file, its text format is now
> expanded as follows:
> name:attr=value<sp>
>    ...
> \0
>
> where "attr" must be a fixed-length(ENV_FLAGS_ATTR_MAX_LEN) string which
> complies with a existing format of ".flags" variable and used by
> env_attr_lookup().

Full NAK here.  This breaks compatibility with exiting code.
The colon is a legal character in variable names, so you cannot use
it to introduce new meanings.

Please extend existing flag handling in a compatible way instead.

Best regards,

Wolfgang Denk

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