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doc: introduce api.pure full, rearrange some examples

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* NEWS: Add entry.
* doc/bison.texi (%define Summary): Show the old Yacc behaviour.
(Parser Function): Move parse-param examples here.
(Pure Calling): Remove parse-param examples.
(Error Reporting): Don't show the old behavior, stick to 'full'.
This commit is contained in:
Theophile Ranquet
2012-11-26 18:17:15 +01:00
parent 6428a8a4a5
commit 1f1bd57297
2 changed files with 86 additions and 66 deletions
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NEWS
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@@ -2,6 +2,17 @@ GNU Bison NEWS
* Noteworthy changes in release ?.? (????-??-??) [?]
** New value for %define variable: api.pure full
The %define variable api.pure requests a pure (reentrant) parser. However,
for historical reasons, using it in a location-tracking Yacc parser resulted
in an yyerror function that did not take a location as a parameter. With this
new value, the user may request a better pure parser, where yyerror does take
a location as a parameter (in location-tracking parsers).
The use of "%define api.pure true" is deprecated in favor of this new
"%define api.pure full".
** Changes in the format of error messages
This used to be the format of many error reports: