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672 days ago

Changelog History
Page 7

  • v0.2.8 Changes

    March 12, 2018

    🐛 Bug gixes:

    • BUG #454: Fix a bug in the nest limit checker being too aggressive.

  • v0.2.7 Changes

    March 07, 2018

    🚀 This release includes a ground-up rewrite of the regex-syntax crate, which has been in development for over a year.

    🆕 New features:

    • Error messages for invalid regexes have been greatly improved. You get these automatically; you don't need to do anything. In addition to better formatting, error messages will now explicitly call out the use of look around. When regex 1.0 is released, this will happen for backreferences as well.
    • 👍 Full support for intersection, difference and symmetric difference of character classes. These can be used via the &&, -- and ~~ binary operators within classes.
    • A Unicode Level 1 conformat implementation of \p{..} character classes. Things like \p{scx:Hira}, \p{age:3.2} or \p{Changes_When_Casefolded} now work. All property name and value aliases are supported, and properties are selected via loose matching. e.g., \p{Greek} is the same as \p{G r E e K}.
    • A new UNICODE.md document has been added to this repository that exhaustively documents support for UTS#18.
    • Empty sub-expressions are now permitted in most places. That is, ()+ is now a valid regex.
    • Almost everything in regex-syntax now uses constant stack space, even when performing anaylsis that requires structural induction. This reduces the risk of a user provided regular expression causing a stack overflow.
    • FEATURE #174: The Ast type in regex-syntax now contains span information.
    • FEATURE #424: Support \u, \u{...}, \U and \U{...} syntax for specifying code points in a regular expression.
    • FEATURE #449: Add a Replace::by_ref adapter for use of a replacer without consuming it.

    🐛 Bug fixes:

    • BUG #446: We re-enable the Boyer-Moore literal matcher.

  • v0.2.6 Changes

    February 08, 2018

    🐛 Bug fixes:

    • BUG #446: Fixes a bug in the new Boyer-Moore searcher that results in a match failure. We fix this bug by temporarily disabling Boyer-Moore.

  • v0.2.5 Changes

    December 30, 2017

    🐛 Bug fixes:

    • BUG #437: Fixes a bug in the new Boyer-Moore searcher that results in a panic.

  • v0.2.4 Changes

    December 30, 2017

    🆕 New features:

    • FEATURE #348: Improve performance for capture searches on anchored regex. (Contributed by @ethanpailes. Nice work!)
    • FEATURE #419: Expand literal searching to include Tuned Boyer-Moore in some cases. (Contributed by @ethanpailes. Nice work!)

    🐛 Bug fixes:

    • BUG: The regex compiler plugin has been removed.
    • BUG: simd has been bumped to 0.2.1, which fixes a Rust nightly build error.
    • BUG: Bring the benchmark harness up to date.

  • v0.2.3 Changes

    November 30, 2017

    🆕 New features:

    🐛 Bug fixes:

    • BUG #375: Fix a bug that prevented the bounded backtracker from terminating.
    • BUG #393, BUG #394: Fix bug with replace methods for empty matches.

  • v0.2.2 Changes

    May 21, 2017

    🆕 New features:

    • FEATURE #341: Support nested character classes and intersection operation. For example, [\p{Greek}&&\pL] matches greek letters and [[0-9]&&[^4]] matches every decimal digit except 4. (Much thanks to @robinst, who contributed this awesome feature.)

    🐛 Bug fixes:

    • BUG #321: Fix bug in literal extraction and UTF-8 decoding.
    • BUG #326: Add documentation tip about the (?x) flag.
    • BUG #333: Show additional replacement example using curly braces.
    • BUG #334: Fix bug when resolving captures after a match.
    • BUG #338: Add example that uses Captures::get to API documentation.
    • BUG #353: Fix RegexSet bug that caused match failure in some cases.
    • BUG #354: Fix panic in parser when (?x) is used.
    • BUG #358: Fix literal optimization bug with RegexSet.
    • BUG #359: Fix example code in README.
    • BUG #365: Fix bug in rure_captures_len in the C binding.
    • BUG #367: Fix byte class bug that caused a panic.

  • v0.2.1 Changes

    🛠 One major bug with replace_all has been fixed along with a couple of other touchups.

    • BUG #312: Fix documentation for NoExpand to reference correct lifetime parameter.
    • BUG #314: Fix a bug with replace_all when replacing a match with the empty string.
    • BUG #316: Note a missing breaking change from the 0.2.0 CHANGELOG entry. (RegexBuilder::compile was renamed to RegexBuilder::build.)
    • BUG #324: Compiling regex should only require one version of memchr crate.

  • v0.2.0 Changes

    🚀 This is a new major release of the regex crate, and is an implementation of the regex 1.0 RFC. We are releasing a 0.2 first, and if there are no major problems, we will 👌 release a 1.0 shortly. For 0.2, the minimum supported Rust version is 1.12.

    💥 There are a number of breaking changes in 0.2. They are split into two types. The first type correspond to breaking changes in regular expression syntax. The second type correspond to breaking changes in the API.

    💥 Breaking changes for regex syntax:

    • POSIX character classes now require double bracketing. Previously, the regex [:upper:] would parse as the upper POSIX character class. Now it parses as the character class containing the characters :upper:. The fix to this change is to use [[:upper:]] instead. Note that variants like [[:upper:][:blank:]] continue to work.
    • The character [ must always be escaped inside a character class.
    • The characters &, - and ~ must be escaped if any one of them are repeated consecutively. For example, [&], [\&], [\&\&], [&-&] are all equivalent while [&&] is illegal. (The motivation for this and the prior change is to provide a backwards compatible path for adding character class set notation.)
    • 0️⃣ A bytes::Regex now has Unicode mode enabled by default (like the main Regex type). This means regexes compiled with bytes::Regex::new that don't have the Unicode flag set should add (?-u) to recover the original behavior.

    💥 Breaking changes for the regex API:

    • find and find_iter now return Match values instead of (usize, usize). Match values have start and end methods, which return the match offsets. Match values also have an as_str method, which returns the text of the match itself.
    • The Captures type now only provides a single iterator over all capturing matches, which should replace uses of iter and iter_pos. Uses of iter_named should use the capture_names method on Regex.
    • The at method on the Captures type has been renamed to get, and it now returns a Match. Similarly, the name method on Captures now returns a Match.
    • The replace methods now return Cow values. The Cow::Borrowed variant is returned when no replacements are made.
    • The Replacer trait has been completely overhauled. This should only impact clients that implement this trait explicitly. Standard uses of the replace methods should continue to work unchanged. If you implement the Replacer trait, please consult the new documentation.
    • 🆓 The quote free function has been renamed to escape.
    • The Regex::with_size_limit method has been removed. It is replaced by RegexBuilder::size_limit.
    • The RegexBuilder type has switched from owned self method receivers to &mut self method receivers. Most uses will continue to work unchanged, but some code may require naming an intermediate variable to hold the builder.
    • 🏗 The compile method on RegexBuilder has been renamed to build.
    • 🚚 The free is_match function has been removed. It is replaced by compiling a Regex and calling its is_match method.
    • The PartialEq and Eq impls on Regex have been dropped. If you relied on these impls, the fix is to define a wrapper type around Regex, impl Deref on it and provide the necessary impls.
    • 🚚 The is_empty method on Captures has been removed. This always returns false, so its use is superfluous.
    • The Syntax variant of the Error type now contains a string instead of a regex_syntax::Error. If you were examining syntax errors more closely, you'll need to explicitly use the regex_syntax crate to re-parse the regex.
    • 🚚 The InvalidSet variant of the Error type has been removed since it is no longer used.
    • Most of the iterator types have been renamed to match conventions. If you were using these iterator types explicitly, please consult the documentation for its new name. For example, RegexSplits has been renamed to Split.

    🛠 A number of bugs have been fixed:

    • BUG #151: The Replacer trait has been changed to permit the caller to control allocation.
    • BUG #165: Remove the free is_match function.
    • BUG #166: Expose more knobs (available in 0.1) and remove with_size_limit.
    • BUG #168: Iterators produced by Captures now have the correct lifetime parameters.
    • BUG #175: Fix a corner case in the parsing of POSIX character classes.
    • BUG #178: Drop the PartialEq and Eq impls on Regex.
    • BUG #179: Remove is_empty from Captures since it always returns false.
    • BUG #276: Position of named capture can now be retrieved from a Captures.
    • BUG #296: Remove winapi/kernel32-sys dependency on UNIX.
    • BUG #307: Fix error on emscripten.

  • v0.1.80 Changes

    • PR #292: Fixes bug #291, which was introduced by PR #290.