Fix %error-verbose for conflicts resolved by %nonassoc.

[bison.git] / TODO

diff --git a/TODO b/TODO
index 8343bbb3aabd2712855b6e408d6066a2522cfbec..d244a8283ece96de79f425f3b6c36f1d48fe01e0 100644 (file)
--- a/TODO
+++ b/TODO
@@ -1,7 +1,19 @@
 -*- outline -*-
 
 * Short term
-** Document %define assert
+** Use b4_symbol in all the skeleton
+Then remove the older system, including the tables generated by
+output.c
+
+** Update the documentation on gnu.org
+
+** Get rid of fake #lines [Bison: ...]
+Possibly as simple as checking whether the column number is nonnegative.
+
+I have seen messages like the following from GCC.
+
+<built-in>:0: fatal error: opening dependency file .deps/libltdl/argz.Tpo: No such file or directory
+
 
 ** Discuss about %printer/%destroy in the case of C++.
 It would be very nice to provide the symbol classes with an operator<<
@@ -42,6 +54,22 @@ number for the error token, which POSIX wants to be 256, but which
 Bison might renumber if the user used number 256.  Keep fix and doc?
 Throw away?
 
+Also, why don't we output the token name of the error token in the
+output?  It is explicitly skipped:
+
+      /* Skip error token and tokens without identifier.  */
+      if (sym != errtoken && id)
+
+Of course there are issues with name spaces, but if we disable we have
+something which seems to be more simpler and more consistent instead
+of the special case YYERRCODE.
+
+   enum yytokentype {
+     error = 256,
+     // ...
+   };
+
+
 We could (should?) also treat the case of the undef_token, which is
 numbered 257 for yylex, and 2 internal.  Both appear for instance in
 toknum:
@@ -143,12 +171,8 @@ management is performed once instead of three times).  I suggest that
 we do the same in yacc.c.
 
 ** yysyntax_error
-In lalr1.cc we invoke it with the translated lookahead (yytoken), and
-yacc.c uses yychar.  I don't see why.
-
-** yysyntax_error
-The use of switch to select yyfmt in lalr1.cc seems simpler than
-what's done in yacc.c.
+The code bw glr.c and yacc.c is really alike, we can certainly factor
+some parts.
 
 * Header guards
 
@@ -282,7 +306,8 @@ this issue.  Does anybody have it?
 Some history of Bison and some bibliography would be most welcome.
 Are there any Texinfo standards for bibliography?
 
-
+** %printer
+Wow, %printer is not documented.  Clearly mark YYPRINT as obsolete.
 
 * Java, Fortran, etc.
 
@@ -403,8 +428,8 @@ Equip the parser with a means to create the (visual) parse tree.
 
 -----
 
-Copyright (C) 2001, 2002, 2003, 2004, 2006, 2008 Free Software Foundation,
-Inc.
+Copyright (C) 2001, 2002, 2003, 2004, 2006, 2008-2009 Free Software
+Foundation, Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.