Yegappan wrote:

> On Sun, Jul 21, 2019 at 5:49 AM Bram Moolenaar
> <[email protected]> wrote:
> >
> > I find this operator rather obscure, I can't find it in popular languages.
> > Also, it's easy enough to use the "if" construct. It's more lines, but it's 
> > easier to understand.
> > I also haven't heard anyone ask for this, and suspect it won't be used much 
> > because plugin developers do not know it exists.
> > Keeping the Vim script language simple is more important, in my opinion.
> >
> 
> In that case, the following item needs to be removed from the todo list:
> 
> -   Add ":let var ?= value", conditional assignment.  Patch by Dave Eggum,
>     2006 Dec 11.

I'll remove that.

> I found that only Ruby has an operator (||=) for the default assignment.
> Other languages are referring to using the ternary operator for this.
> In these cases, the operator is used only in the RHS expression.

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