t / chainlint / subshell-here-doc.expecton commit worktree: disallow adding same path multiple times (cb56f55)
   1(
   2        echo wobba             gorgo snoot             wafta snurb &&
   3?!AMP?! cat >bip
   4        echo >bop
   5>) &&
   6(
   7        cat >bup &&
   8        cat >bup2 &&
   9        meep
  10>)