Akim Demaille bd187d7b65 Use b4_subtract where possible. ...

* data/lalr1.cc (b4_subtract): Move to...
	* data/bison.m4: here.
	* data/glr.c (b4_rhs_data): Use it.
	* data/yacc.c (b4_rhs_value, b4_rhs_location): Use it.

2008-11-18 20:57:26 +01:00

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