proposal: psql statements \gstore \gstore_binary (instead COPY RAW)

Hi

Long time I am pushing a COPY RAW - without success.

Now I propose functionally similar solution - reduced to only to psql
console

Now we have a statement \g for execution query, \gset for exec and store
result in memory and I propose \gstore for storing result in file and
\gstore_binary for storing result in file with binary passing. The query
result should be one row, one column.

Usage:

SELECT image FROM accounts WHERE id = xxx
\gstore_binary ~/image.png

What do you think about this proposal?

Regards

Pavel