Code that disapears

[Akim Demaille]

I often put in some code that is not yet used, but plans to be used.
I'd like it to stay there.  In particular, it is not by chance that
there was more M4 code than C code in some areas, for instance in the
handling of output file names.  Scavenging in the pat, I find things
like:

http://savannah.gnu.org/cgi-bin/viewcvs/bison/bison/data/lalr1.cc.diff?r1=1.13&r2=1.14&diff_format=h

 m4_define_default([b4_input_suffix], [.y])  
   
 m4_define_default([b4_output_parser_suffix],  
 [m4_translit(b4_input_suffix, [yY], [cC])])  
   
 m4_define_default([b4_output_parser_name],  
 [b4_output_prefix[]b4_output_infix[]b4_output_parser_suffix[]])  
   
   
 m4_define_default([b4_output_header_suffix],  
 [m4_translit(b4_input_suffix, [yY], [hH])])  
   
 m4_define_default([b4_output_header_name],  
 [b4_output_prefix[]b4_output_infix[]b4_output_header_suffix[]])  
   
 m4_define_default([b4_header_guard],  
                   [m4_bpatsubst(m4_toupper([BISON_]b4_output_header_name),  
                                 [[^ABCDEFGHIJKLMNOPQRSTUVWXYZ]],
                   [_])])  
 

This code is no longer in Bison, and it should.  @output_file_name@
and so forth should be replaced by a definition of
output_file_escaped, and restore the role played by M4 in the
output. (BTW, I don't understand why the guard has disappeared here).

I'll do that when I have time, but I am opposed to any release of
Bison now.