I suppose I didn't understand that a simple statement can be, the same time BE a compound statement

Something is either a simple statement or a compound statement, not both.

But one can include the other.

• eval { for (1..2) { f(); } }; is a simple statement.
• for (1..2) { f(); } is a compound statement.
• f(); is a simple statement.

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And eval is neither a simple nor a compound statement. As I've already said, eval is an operator (like +, and and time), not a type of statement.

Operators can include blocks and thus statements:

• do
• eval
• map
• grep
• sort
• print (e.g. print { ; $fh } $_)
• say
• Subs calls to subs with the & prototype
• Indirect method call (e.g. new { ; "Class" })
• Replacement "expression" of s///e
• Circumfix derefs (e.g. ${ ; \$_ })
• (?{ }) in regex patterns
• (??{ }) in regex patterns

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