Log Message:
-----------
Split out everything that looks like a function call from c_expr into
a separate production func_expr. This allows us to accept all these
variants in the backwards-compatible syntax for creating a functional
index; which beats documenting exactly which things work and which don't.
Interestingly, it also seems to make the generated state machine a little
bit smaller.
Modified Files:
--------------
pgsql-server/src/backend/parser:
gram.y (r2.475 -> r2.476)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/parser/gram.y.diff?r1=2.475&r2=2.476)
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