t / chainlint / arithmetic-expansion.expecton commit diff.c: pass sign_index to emit_line_ws_markup (bc9feb0)
   1(
   2        foo &&
   3        bar=$((42 + 1)) &&
   4        baz
   5>) &&
   6(
   7?!AMP?! bar=$((42 + 1))
   8        baz
   9>)