Re: Using empty_string as the only "" string

[Richard Stallman]

The issue is about null strings.  Non-null strings should
not be canonicalized because you can change the elements and text
properties in them.

Handa wrote:

    You can modify the multibyteness of an empty string, and a
    unibyte empty string and a multibyte empty string behave a
    little bit differently, for instance, when concatinated with
    an unibyte 8-bit string.

Thus, there would need to be two canonical null strings,
one unibyte and one multibyte.