[cocci] Searching for switch statements with SmPL?

Hello,

I would appreciate if another source code analysis can be achieved
also by the means of the semantic patch language.
Thus I tried the following SmPL script variant out.

@display@
constant c;
expression e;
statement s;
@@
(switch (e)
 {
 <+... case c: ... break; ...+>
 }
|
*switch (...) s
)


Unfortunately, I am wondering about the following information.

Questionable test result (according to the software combination “Coccinelle 1.3.0”):
Markus_Elfring@Sonne:…/Projekte/Coccinelle/janitor> /usr/bin/spatch --parse-cocci show_switch_without_break2.cocci
…
minus: parse error: 
  File "show_switch_without_break2.cocci", line 8, column 1, charpos = 68
  around = '<+...',
  whole content =  <+... case c: ... break; ...+>


Under which circumstances will such data processing become better supported?

Regards,
Markus