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From: Greg Wooledge <wooledg@eeg.ccf.org>
Newsgroups: gnu.bash.bug
Subject: Re: Exclamation mark does not work with set -e
Date: Mon, 6 Apr 2020 10:49:42 -0400
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Xref: csiph.com gnu.bash.bug:16102

On Mon, Apr 06, 2020 at 04:33:15PM +0200, fb@florentbordignon.fr wrote:
> Hello,
> 
> The following assertion succeeds when it should not :
> set -e
> ! true
> echo Hello # prints Hello but should not

              -e      Exit  immediately  if a pipeline (which may consist of a
                      single simple command), a list, or  a  compound  command
                      (see SHELL GRAMMAR above), exits with a non-zero status.
                      The shell does not exit if the  command  that  fails  is
                      part  of  the command list immediately following a while
                      or until keyword, part of the test following the  if  or
                      elif  reserved  words, part of any command executed in a
                      && or || list except the command following the final  &&
                      or ||, any command in a pipeline but the last, or if the
                      command's return value is being inverted with !.

(snip)