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* NEWS: Reword the post-2.3 change to not be so optimistic about

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removing the old "look-ahead" spelling.
Update previous look-ahead/lookahead change reports.
* REFERENCES: look-ahead -> lookahead (since that's
what he actually wrote).
* doc/refcard.tex: look ahead -> lookahead,
look-ahead -> lookahead
This commit is contained in:
Paul Eggert
2006-06-11 08:16:04 +00:00
parent 742e4900c8
commit 9e6e7ed2b2
4 changed files with 19 additions and 9 deletions
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10
ChangeLog
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@@ -1,3 +1,13 @@
2006-06-11 Paul Eggert <eggert@cs.ucla.edu>
* NEWS: Reword the post-2.3 change to not be so optimistic about
removing the old "look-ahead" spelling.
Update previous look-ahead/lookahead change reports.
* REFERENCES: look-ahead -> lookahead (since that's
what he actually wrote).
* doc/refcard.tex: look ahead -> lookahead,
look-ahead -> lookahead
2006-06-09 Joel E. Denny <jdenny@ces.clemson.edu>
For consistency, use `lookahead' instead of `look-ahead' or

10
NEWS
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@@ -4,7 +4,8 @@ Bison News
Changes in version 2.3+:
* The option `--report=look-ahead' has been changed to `--report=lookahead'.
The old spelling still works but is not documented and will be removed.
The old spelling still works, but is not documented and may be removed
in a future release.
Changes in version 2.3, 2006-06-05:
@@ -164,8 +165,7 @@ Changes in version 2.0, 2004-12-25:
This is a GNU extension.
- The option `--report=lookahead' was changed to `--report=look-ahead'.
The old spelling still works, but is not documented and will be
removed.
[However, this was changed back after 2.3.]
- Experimental %destructor support has been added to lalr1.cc.
@@ -432,8 +432,8 @@ Changes in version 1.50, 2002-10-04:
produces additional information:
- itemset
complete the core item sets with their closure
- lookahead [changed to `look-ahead' in 1.875e and later]
explicitly associate look-ahead tokens to items
- lookahead [changed to `look-ahead' in 1.875e through 2.3, but changed back]
explicitly associate lookahead tokens to items
- solved
describe shift/reduce conflicts solving.
Bison used to systematically output this information on top of

2
REFERENCES
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@@ -19,7 +19,7 @@ kludges that Johnson had to perpetrate to make Yacc fit in a PDP-11.
Also, Bison uses a faster but less space-efficient encoding for the
parse tables (see Corbett's PhD thesis from Berkeley, "Static
Semantics in Compiler Error Recovery", June 1985, Report No. UCB/CSD
85/251), and more modern technique for generating the look-ahead sets.
85/251), and more modern technique for generating the lookahead sets.
(See Frank DeRemer and Thomas Pennello, "Efficient Computation of
LALR(1) Look-Ahead Sets", ACM Transactions on Programming Languages
and Systems (TOPLAS) 4, 4 (October 1982), 615-649. Their

6
doc/refcard.tex
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@@ -458,7 +458,7 @@ as either {\tt first_column} or {\tt last_column}.
\section {Variables and Types}
%*****************************
\key{Current look ahead token.} {yychar}
\key{Current lookahead token.} {yychar}
\key{Debug mode flag.} {yydebug}
\key{Data associated with the current token.} {yylval}
\key{Source position of current token.} {yylloc}
@@ -489,8 +489,8 @@ as either {\tt first_column} or {\tt last_column}.
\key{Quit parsing immediately. Return 1.} {YYABORT}
\key{Quit parsing immediately. Return 0.} {YYACCEPT}
\key{Pretend a syntax error occurred.} {YYERROR}
\key{Value in {\tt yychar} if no look-ahead token.} {YYEMPTY}
\key{Clear previous look ahead token.} {yyclearin}
\key{Value in {\tt yychar} if no lookahead token.} {YYEMPTY}
\key{Clear previous lookahead token.} {yyclearin}
\key{Recover normally from an error.} {yyerrok}
% **************