src/tools/rustfmt/tests/source/issue_3853.rs

fn by_ref_with_block_before_ident() {
if let Some(ref     /*def*/      state)=        foo{
				println!(
        "asdfasdfasdf");	}
}

fn mut_block_before_ident() {
if   let Some(mut     /*def*/    state  ) =foo{
				println!(
        "123"   );	}
}

fn ref_and_mut_blocks_before_ident() {
if   let Some(ref  /*abc*/
    mut     /*def*/    state  )    =       foo {
				println!(
 "deefefefefefwea"   );	}
}

fn sub_pattern() {
    let foo @             /*foo*/
bar(f) = 42;
}

fn no_prefix_block_before_ident() {
if   let Some(
    /*def*/    state  )    =       foo {
				println!(
 "129387123123"   );	}
}

fn issue_3853() {
if let Some(ref /*mut*/ state) = foo {
					}
}

fn double_slash_comment_between_lhs_and_rhs() {
    if let Some(e) =
				 // self.foo.bar(e, tx)
				 packet.transaction.state.committed
                {
            // body
                            println!(
                                "a2304712836123");
                                }
}

fn block_comment_between_lhs_and_rhs() {
if let Some(ref     /*def*/  mut     /*abc*/       state)=          /*abc*/foo{
				println!(
        "asdfasdfasdf");	}
}