Re: [Proposal] Level4 Warnings show many shadow vars

On 2019-Dec-09, Kyotaro Horiguchi wrote:

> > >BTW, if we do go forward with changing the RedoRecPtr uses, I'm not
> > >in love with "XRedoRecPtr" as a replacement parameter name; it conveys
> > >nothing much, and the "X" prefix is already overused in that area of
> > >the code. Perhaps "pRedoRecPtr" would be a better choice? Or maybe
> > >make the local variables be all-lower-case "redorecptr", which would
> > >fit well in context in places like
> > pRedoRecPtr, It's perfect for me.
>
> Anyway I strongly object to the name 'pRedoRecPtr', which suggests as
> if it is a C-pointer to some variable. (And I believe we use Hungarian
> notation only if we don't have a better way...) LatestRedoRecPtr
> looks better to me.

We have a not-consistently-used convention that names in CamelCase are
used for global variables. Naming a function parameter in that style
seems pointlessly confusing. I would rather use redorecptr as Tom
suggested, which fits with the style used for the other arguments of
that function. BTW prepending an X or a p looks like minimum effort...
I'd stay away from that.

It's probably a lost cause to enforce such a style with ironclad
consistency, but I suggest we make at least a token effort at it, and
keep our source as least confusing as possible.

--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services