doc: c++: document parser::context

* doc/bison.texi (C++ Parser Context): New.

* data/skeletons/lalr1.cc (parser::yysymbol_name): Rename as...
(parser::symbol_name): this.
(A Complete C++ Example): Promote LAC, now that we have it.
Promote parse.error detailed over verbose.
* examples/c++/calc++/calc++.test, tests/local.at: Adjust.

1 files changed, 8 insertions, 1 deletions

diff --git a/examples/c++/calc++/calc++.test b/examples/c++/calc++/calc++.test
index d0df490f..e00bb466 100755
--- a/examples/c++/calc++/calc++.test
+++ b/examples/c++/calc++/calc++.test
@@ -45,10 +45,17 @@ run 0 9
 
 
 cat >input <<EOF
+1 +
+EOF
+run 1 'err: -:2.1: syntax error, unexpected end of file, expecting ( or identifier or number'
+
+
+# LAC finds many more tokens.
+cat >input <<EOF
 a := 1
 d := a + b * c
 EOF
-run 1 'err: -:3.1: syntax error, unexpected end of file, expecting ( or identifier or number'
+run 1 'err: -:3.1: syntax error, unexpected end of file'
 
 
 cat >input <<EOF