while (x == 2) h(
  2
)

while (x == 2) h( # comment
  2
)

while (x == 2 &&
  2 + 2 == 2) h(
  2
)


for (x in 1:22) h(
  2
)

for (x in 1:22) h( # comment
  2
)

for (k in f(
  2:22
)) h(
  2
)

for (k in f(
  2:22 # comment
)) h(2)