The quote issue is quite true, although some editors have "smart" input modes which will introduce open+close syntax at the same time, and "step over" the close

The quote issue is quite true, although some editors have "smart" input modes which will introduce open+close syntax at the same time, and "step over" the close syntax when typed (rather than duplicating it). For example in Emacs https://www.emacswiki.org/emacs/AutoPairs https://www.emacswiki.org/emacs/AutoPairs