Another reproducer:
# c='[1][1][1]' # touch 111 # echo $c 111 # rm 111 # echo $c [1][1][1] ------------------ Original ------------------ From: "Lingfei Kong";<466701...@qq.com>; Date: Wed, Jul 27, 2016 07:24 PM To: "bug-bash"<bug-bash@gnu.org>; Subject: echo builtin command will give the wrong value of the variable when there is a file named: 11 in the current directory Description:echo builtin command will give the wrong value of the variable when there is a file named: 11 in the current directory. Version:GNU bash, version 4.2.45(1)-release-by_tst_tlinux20_v1004 (x86_64-unknown-linux-gnu)GNU bash, version 4.1.2(1)-release-by_mupan_tlinux_v1004 (x86_64-unknown-linux-gnu)GNU bash, version 3.2.48(1)-release-by_tst_suse_31_v1004 (x86_64-unknown-linux-gnu) How reproducible:100% Steps to Reproduce:# touch 11 # c='[11761][1469504252]' # echo $c 11 # rm 11 # echo $c [11761][1469504252] Expected results:# touch 11 # c='[11761][1469504252]' # echo $c [11761][1469504252] Best RegardsLingfei