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-pc-linux-gnu' -DCONF_VENDOR='pc' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' -DSHELL -DHAVE_CONFIG_H -I. -I../. -I.././include -I.././lib -Wdate-time -D_FORTIFY_SOURCE=2 -g -O2 -fdebug-prefix-map=/build/bash-IrsGKQ/bash-4.4=. -fstack-protector-strong -Wformat -Werror=format-security -Wall -no-pie -Wno-parentheses -Wno-format-security uname output: Linux monk 4.13.0-37-generic #42-Ubuntu SMP Wed Mar 7 14:13:23 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux Machine Type: x86_64-pc-linux-gnu
Bash Version: 4.4 Patch Level: 12 Release Status: release Description: compgen -W "wordlist" doesn't split wordlist on $IFS if wordlist contains unquoted single quotes. For instance, this wordlist, "foo'bar aaa bbb", won't be split using the default value of IFS: it will be treated as a single word. Repeat-By: Using "foo'bar foo bar" as the wordlist, this is the result of completing on f, a and b: paulo@monk:~/tmp$ compgen -W "foo'bar aaa bbb" -- a paulo@monk:~/tmp$ compgen -W "foo'bar aaa bbb" -- b paulo@monk:~/tmp$ compgen -W "foo'bar aaa bbb" -- f foobar aaa bbb As you can see, compgen removed the unquoted single quote and treated "foobar aaa bbb" as a single word. It works correctly if the single quote is itself quoted. Our test wordlist would then be: "foo\'bar aaa bbb" paulo@monk:~/tmp$ compgen -W "foo\'bar aaa bbb" -- a aaa paulo@monk:~/tmp$ compgen -W "foo\'bar aaa bbb" -- b bbb paulo@monk:~/tmp$ compgen -W "foo\'bar aaa bbb" -- f foo'bar
