How can I get bash to exit on backtick failure in a similar way to pipefail?

The exact language used in the Single UNIX specification to describe the meaning of set -e is: When this option is on, if a simple command fails for any of the reasons listed in Consequences of Shell Errors or returns an exit status value >0, and is not [a conditional or negated command], then the shell shall immediately exit. There is an ambiguity as to what happens when such a command occurs in

[kuy]

localコマンドを使うと常に$?が0になるので、変数宣言と代入を別々にすると回避できる。

[igrep]

-O inherit_errexit 知らなかった。bashやっぱ難しいなぁ