" yes" ${if bool{ yes}{true}{false}} EXPECT: true
" no" ${if bool{ no}{true}{false}} EXPECT: false
"yes " ${if bool{yes }{true}{false}} EXPECT: true
-"-1" ${if bool{-1}{true}{false}} EXPECT: error
+"-1" ${if bool{-1}{true}{false}} EXPECT: true
"0" ${if bool{0}{true}{false}} EXPECT: false
"1" ${if bool{1}{true}{false}} EXPECT: true
" 0 " ${if bool{ 0 }{true}{false}} EXPECT: false
" " ${if bool{ }{true}{false}} EXPECT: false
"text" ${if bool{text}{true}{false}} EXPECT: error
" text" ${if bool{ text}{true}{false}} EXPECT: error
+"-text" ${if bool{-text}{true}{false}} EXPECT: error
"text " ${if bool{text }{true}{false}} EXPECT: error
" text " ${if bool{ text }{true}{false}} EXPECT: error
"00" ${if bool{00}{true}{false}} EXPECT: false