[PATCH v4 4/5] env: Allow environment files to use the C preprocessor

[Wolfgang Denk]

Dear Simon,

In message <20210919125937.v4.4.Ie78bfbfca0d01d9cba501e127f446ec48e1f7afe at changeid> you wrote:
>
> +To add additional text to a variable you can use var+=value. This text is
> +merged into the variable during the make process and made available as a
> +single value to U-Boot.

Explained after use.  Move documentation to previous patch?

> +		# Deal with +=
> +		if (match(var, "(.*)[+]$", var_arr)) {
> +			var = var_arr[1]
> +			env = vars[var] env
> +		}


Hm...  this is (so far) a legal command:

	=> setenv foobar+ foo+=bar


Best regards,

Wolfgang Denk

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