tes

            stageRedirs.push_back(redir);

            continue;

        }

        // "{ cmds; } redirection": same handling as "(cmds)" just above --

        // every stage of a pipeline already runs forked+isolated regardless

        // (see runStageChild()'s own comment), so a "{ }" group stage gets

        // exactly the same subshell-body recursion a "(...)" one would,

        // which is also exactly what real shells do for it here (e.g. the

        // Linux kernel's own scripts/syscallhdr.sh: "grep ... | { echo ...;

        // while read ...; done; } > outfile" -- without this, "{" itself

        // was tokenized as a literal, nonexistent command instead of a

        // group opener at all).

        if(extractBraceGroupBody(rawstages[i],subshellBody,suffix)){

            stageSubshellBody.push_back(subshellBody);

            std::vector<std::string> tokens=tokenizeShellArgs(suffix);

            stageTokens.push_back(extractRedirections(tokens,redir));

            stageRedirs.push_back(redir);

            continue;

        }

        stageSubshellBody.push_back("");

        std::vector<std::string> tokens=tokenizeShellArgs(rawstages[i]);