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# master (not yet released)
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# Version 0.12
**Enabled a new table-driven code-generator by default.** This generates
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less code than the older recursive-ascent-based generation scheme, but
may parse less efficiently. To go back to the old scheme, annotate
the grammar declaration:
```
#[recursive_ascent] grammar;
```
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Also, **the syntax for requesting LALR-generation has changed** to use
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an annotation:
```
#[LALR] grammar;
```
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We no longer **emit module-level attributes** , which means that unused
imports in your .lalrpop file may start getting warnings. [Thanks
@dflemstr !](https://github.com/nikomatsakis/lalrpop/pull/118)
An overflow bug in LALRPOP was
fixed. [Thanks @larsluthman! ](https://github.com/nikomatsakis/lalrpop/pull/120 )
We no longer depend on `time` , but now use
`std::time` . [Thanks @serprex! ](https://github.com/nikomatsakis/lalrpop/pull/121 )
There is now a `Configuration` object for use in your `build.rs`
scripts. And,
[thanks to @dflemstr! ](https://github.com/nikomatsakis/lalrpop/pull/108 ),
it permits you to configure the directory where LALRPOP output is
generated.
Fixed a bug in the LALRPOP option
parsing. [Thanks @Nemikolh! ](https://github.com/nikomatsakis/lalrpop/pull/106 )
Various typos and small corrections. Thanks [@reuben ](https://github.com/nikomatsakis/lalrpop/pull/1103 ) and [@ashleygwilliams ](https://github.com/nikomatsakis/lalrpop/pull/116 )!
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# Version 0.11
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Updated to use the `regex-syntax` crate for regular expression
parsing instead of rolling our own parser. This means we can now
support the [same regular expression syntax as the regex crate ](https://doc.rust-lang.org/regex/regex/index.html#syntax ),
and in particular can support unicode character classes like `\p{Greek}` .
Note that some regex features -- such as non-greedy repetition and
named capture groups -- are still not supported (or just not meaningful).
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Optimized LR(1) construction time by approximately 5x.
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Improved handling of location tokens `@L` and `@R` so that they can be
freely used without ever causing parse conflicts.
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# Version 0.10
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Major update to LALRPOP error messages in cases of shift/reduce and
reduce/reduce conflicts. The messages now try to explain the problem
in terms of your grammar, as well as diagnosing common problem
scenarios and suggesting solutions.
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Added a standalone LALRPOP executable.
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We no longer generate incomplete files when grammar generation fails
(Issue #57 ).
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# Version 0.9
Miscellaneous bug fixes, mostly. Processing for a `build.rs` file now
starts from the project directory, rather than being hardcoded to
start from `src` .
# Version 0.8
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Add support for inlining nonterminals. Nonterminals can now be
annotated with `#[inline]` . If you do so, each use of the nonterminal
will be inlined into its place. This can be very helpful in addressing
shift-reduce or reduce-reduce conflicts, at the cost of a larger
grammar. We now inline `Foo*` , `Foo?` , and `(Foo Bar)` nonterminals by
default.
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# Version 0.7
This is mostly a bug-fix release.
Various minor issues were addressed:
- Issue #25: Unbalanced parens in string literals appearing in code now work properly.
- Issue #32: Regular expression parsing consumed infinite memory when a `.` appeared.
- Issue #34: Automatic tokenizer generation did not play well with generic type parameters.
# Older versions
I hadn't yet started writing release notes, sorry.
