Test expression was opened with double [[ but closed with single ]. Make sure they match
1# SH-1033
2[[ x ] || [ y ]]3
4# SH-1035
5if ![-z foo ]; then true; fi # if command `[-z' w/ args `foo', `]' fails..
Description
Found a test expression [ ... ] (POSIX) or [[ ... ]] (ksh/bash) where the opening and closing brackets did not match (i.e. [[ .. ] or [ .. ]]).
The brackets need to match up to work.
Note in particular that [..] do not work like parentheses in other languages. You can not do:
# Invalid
[[ x ] || [ y ]]
Instead, use two separate test expressions joined by ||:
# Valid basic test expressions (sh/bash/ksh)
[ x ] || [ y ]
# Valid extended test expressions (bash/ksh)
[[ x ]] || [[ y ]]