shift/reduce problem with ecpg

gram.y says:

opt_indirection:  ...
                | '[' a_expr ']' opt_indirection
                | '[' a_expr ':' a_expr ']' opt_indirection
        ...

IMO a_expr is exactly where I have to enter C variable support. That is I
add a new case to a_expr: named cinputvariable which among others might have
the following form:

cinputvariable: /* empty */
        ...
        | ':' name ':' name
        ...

With the first name being the variable, the second being the the name of the
indicator variable. As you might expect this results in a shift/reduce
conflict since there is no way to decide whether the second name is the
indicator variable or a coloumn name.

Any idea how to solve this?

Michael
--
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