1 2keywords='if then else elif fi while until for do done { } case esac ! in' 3 4# Keywords can be used unquoted in case statements, except the keyword 5# esac as the first pattern of a '|' alternation without a starting '('. 6# (POSIX doesn't seem to require (esac) to work.) 7for k in $keywords; do 8 eval "case $k in (foo|$k) ;; *) echo bad ;; esac" 9 eval "case $k in ($k) ;; *) echo bad ;; esac" 10 eval "case $k in foo|$k) ;; *) echo bad ;; esac" 11 [ "$k" = esac ] && continue 12 eval "case $k in $k) ;; *) echo bad ;; esac" 13done 14