autocommit

This might be a wish list or add feature. 
Could we add one simple switch to psql (the client front end or the 
library) --noautocommit?
This will require you to type commit at the end of a query.  Most of the 
time I would be using
psql to do simple stuff.  Some times I need to update databases.  I kind 
get used to the autocommit.
When forgot to type BEGIN
I some times destroy the content of certain table when updating tables. 
the I have go for the backup.

Is my request reasonable or I have to cultivate a good habit?

Kemin





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