Re: 31395511: "Don’t attempt to modify constant strings"

[Stefan Monnier]

> If memory serves, it wasn't that long ago that the Elisp interpreter prevented
> you from doing that sort of funny business on propertized string constants (at
> least when they were in pure space),

AFAIK there aren't any propertized strings in purespace, because
`purecopy` doesn't copy the properties:

    static Lisp_Object
    purecopy (Lisp_Object obj)
    {
      if (FIXNUMP (obj)
          || (! SYMBOLP (obj) && PURE_P (XPNTR (obj)))
          || SUBRP (obj))
        return obj;    /* Already pure.  */
    
      if (STRINGP (obj) && XSTRING (obj)->u.s.intervals)
        message_with_string ("Dropping text-properties while making string `%s' 
pure",
                             obj, true);


-- Stefan