On Tue, Feb 21, 2017 at 11:02 AM, Dennis Kuhn <d.k...@syseleven.de> wrote: [...] > > When the variable s is set to readonly the script does not exit and echoes > "abc": > > #!/bin/bash > set -e > > readonly s=$(false) > echo "abc" [...]
This is a commonly reported issue. The moment you add the readonly builtin, you're no longer seeing the exit code from the command substitution, but the exit code from readonly. See: https://lists.gnu.org/archive/html/bug-bash/2012-10/msg00075.html Command substitution and errexit http://lists.gnu.org/archive/html/bug-bash/2014-08/msg00036.html 'declare' does not honor '-e' in command substituted assignments - a bug http://lists.gnu.org/archive/html/bug-bash/2015-09/msg00109.html local keyword hides return code of command substitution One easy way to workaround this is to do: s=$(...); readonly s
