peek              335 sh.c             peek(&s, es, "");
peek              350 sh.c             while(peek(ps, es, "&")){
peek              354 sh.c             if(peek(ps, es, ";")){
peek              367 sh.c             if(peek(ps, es, "|")){
peek              380 sh.c             while(peek(ps, es, "<>")){
peek              404 sh.c             if(!peek(ps, es, "("))
peek              408 sh.c             if(!peek(ps, es, ")"))
peek              423 sh.c             if(peek(ps, es, "("))
peek              431 sh.c             while(!peek(ps, es, "|)&;")){