Help with new camlp4

[Joel Reymont <joelr1@gmail.com>]

Folks,

This error

File "q_octal.ml", line 183, characters 40-49:
While expanding quotation "expr":
   Parse error: "::" or "]" expected after [sem_patt_for_list] (in  
[patt])

Points to $lid:name$ in the following bit of code

                         (<:expr<
                                 match $exp$ with
                                 [ Some $lid:name$ -> $subast$ | None  
-> []]
                         >>, StringSet.add var (StringSet.remove name  
vars), true

How do I fix this in the new camlp4 and where is this documented?

	Thanks, Joel

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