1 # skipping in expansions
3 ${if eq {0}{0}{OK}{${lookup{x}lsearch{/x/y}}}}
4 ${if eq {0}{0}{OK}{${extract{key}{${lookup{x}lsearch{/x/y}}}}}}
5 ${if eq {0}{0}{OK}{${tr{${extract{key}{${lookup{x}lsearch{/x/y}}}}}{x}{y}}}}
6 ${if eq {0}{0}{OK}{${sg{${extract{key}{${lookup{x}lsearch{/x/y}}}}}{x}{y}}}}