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ERR trap fired in && compound inside a function
From: |
Yury Kartynnik |
Subject: |
ERR trap fired in && compound inside a function |
Date: |
Sat, 16 Dec 2017 16:15:19 +0300 |
Configuration Information [Automatically generated, do not change]:
Machine: x86_64
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS: -DPROGRAM='bash' -DCONF_HOSTTYPE='x86_64'
-DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='x86_64-unknown-linux-gnu'
-DCONF_VENDOR='unknown'
-DLOCALEDIR='/home/kartynnik/.local/share/locale' -DPACKAGE='bash'
-DSHELL -DHAVE_CONFIG_H -I. -I. -I./include -I./lib -g -O2
-Wno-parentheses -Wno-format-security
uname output: Linux zedbook 4.10.0-40-generic #44~16.04.1-Ubuntu SMP
Thu Nov 9 15:37:44 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
Machine Type: x86_64-unknown-linux-gnu
Bash Version: 4.4
Patch Level: 12
Release Status: release
Description:
ERR trap gets fired when a non-last command in a && compound
command inside a function returns a non-zero code.
This doesn't happen when the compound command is executed
directly from the shell.
According to the trap documentation, non-last commands in &&
and || should not fire the ERR trap in any case.
Repeat-By:
$ on_error() {
> echo "Error $? in $@" >&2
> }
$ trap 'on_error $BASH_COMMAND' ERR
$ false
Error 1 in false
$ # ^^^ works as intended
$ false && true
$ # ^^^ doesn't fire, complies with the docs
$ f() {
> false && true
> }
$ f
Error 1 in false
$ # ^^^ fires, doesn't comply with the docs
- ERR trap fired in && compound inside a function,
Yury Kartynnik <=