Re: Is it safe to modify a property list directly with PLIST-PUT?

[Teemu Likonen <tlikonen@iki.fi>]

On 2009-07-26 19:38 (+0300), Teemu Likonen wrote:

>     ((:foo "one" :bar "two")
>      (:foo "three" :bar "New value"))

> The question: Is this reliable? Is it guaranteed that it will always
> modify the list correctly? If not, how would you suggest doing it
> instead?

Ah, Emacs Lisp manual effectively says that it's not guaranteed. So,
what would be the best way to modify single values in a list like the
above?


 -- Function: plist-put plist property value
     This stores VALUE as the value of the PROPERTY property in the
     property list PLIST.  It may modify PLIST destructively, or it may
     construct a new list structure without altering the old.  The
     function returns the modified property list, so you can store that
     back in the place where you got PLIST.  For example,

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