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1.4.4 / 2020-07-01

  • Fixed an issue reported by Jun Aruga in the Diff::LCS::Ldiff binary text detection. #44
  • Fixed a theoretical issue reported by Jun Aruga in Diff::LCS::Hunk to raise a more useful exception. #43
  • Added documentation that should address custom object issues as reported in #35.
  • Fixed more diff errors, in part reported in #65.

1.4.3 / 2020-06-29

  • Fixed several issues with the 1.4 on Rubies older than 2.0. Some of this was providing useful shim functions to Hoe 3.x (which dropped these older Rubies a while ago). Specifically:

    • Removed Array#lazy from a method in Diff::LCS::Hunk.
    • Changed some unit tests to use old-style Symbol-keyed hashes.
    • Changed some unit test helper functions to no longer use keyword parameters, but only a trailing options hash.
    • Made the use of psych dependent on RUBY_VERSION >= 1.9.

    Resolves #63.

1.4.2 / 2020-06-23

  • Camille Drapier fixed a small issue with RuboCop configuration. #59
  • Applied another fix (and unit test) to fix an issue for the Chef team. #60, #61

1.4.1 / 2020-06-23

  • Fix an issue where diff sizes could be negative, and they should be. #57, #58

1.4 / 2020-06-23

  • Ruby versions lower than 2.4 are soft-deprecated and will not be run as part of the CI process any longer.
  • Akinora MUSHA (knu) added the ability for Diff::LCS::Change objects to be implicitly treated arrays. Originally provided as pull request #47, but it introduced a number of test failures as documented in #48, and remediation of Diff::LCS itself was introduced in #49.
  • Resolved #5 with some tests comparing output from system calls to bin/ldiff with some pre-generated output. Resolved #6 with these tests.
  • Resolved a previously undetected bin/ldiff issue with --context output not matching diff --context output.
  • Resolved an issue with later versions of Ruby not working with an OptParse specification of Numeric; this has been changed to Integer.
  • Brandon Fish added truffleruby in #52.
  • Fixed two missing classes as reported in #53.

1.3 / 2017-01-18

  • Bugs fixed:

    • Fixed an error for bin/ldiff --version. Fixes issue #21.
    • Force Diff::LCS::Change and Diff::LCS::ContextChange to only perform equality comparisons against themselves. Provided by Kevin Mook in pull request #29.
    • Fix tab expansion in htmldiff, provided by Mark Friedgan in pull request #25.
    • Silence Ruby 2.4 Fixnum deprecation warnings. Fixxues issue #38 and [pull request#36][].
    • Ensure that test dependencies are loaded properly. Fixes issue #33 and pull request #34.
    • Fix issue #1 with incorrect intuition of patch direction. Tentative fix, but the previous failure cases pass now.

  • Tooling changes:

    • Added SimpleCov and Coveralls support.
    • Change the homepage (temporarily) to the GitHub repo.
    • Updated testing and gem infrastructure.
    • Modernized the specs.

  • Cleaned up documentation.

  • Added a Code of Conduct.

1.2.5 / 2013-11-08

  • Bugs fixed:

    • Comparing arrays flattened them too far, especially with Diff::LCS.sdiff. Fixed by Josh Bronson in pull request #23.

1.2.4 / 2013-04-20

  • Bugs fixed:

    • A bug was introduced after 1.1.3 when pruning common sequences at the start of comparison. Paul Kunysch (@pck) fixed this in pull request #18. Thanks!

    • The Rubinius (1.9 mode) bug in rubinius/rubinius#2268 has been fixed by the Rubinius team two days after it was filed. Thanks for fixing this so quickly!

  • Switching to Raggi's hoe-gemspec2 for gemspec generation.

1.2.3 / 2013-04-11

  • Bugs Fixed:

    • The new encoding detection for diff output generation (added in 1.2.2) introduced a bug if the left side of the comparison was the empty set. Originally found in rspec/rspec-expectations#238 and rspec/rspec-expectations#239. Jon Rowe developed a reasonable heuristic (left side, right side, empty string literal) to avoid this bug.
    • There is a known issue with Rubinius in 1.9 mode reported in rubinius/rubinius#2268 and demonstrated in the Travis CI builds. For all other tested platforms, diff-lcs is considered stable. As soon as a suitably small test-case can be created for the Rubinius team to examine, this will be added to the Rubinius issue around this.

1.2.2 / 2013-03-30

  • Bugs Fixed:

    • Diff::LCS::Hunk could not properly generate a difference for comparison sets that are not US-ASCII-compatible because of the use of literal regular expressions and strings. Jon Rowe found this in rspec/rspec-expectations#219 and provided a first pass implementation in pull request #15. I've reworked it because of test failures in Rubinius when running in Ruby 1.9 mode. This coerces the added values to the encoding of the old dataset (as determined by the first piece of the old dataset).
    • Adding Travis CI testing for Ruby 2.0.

1.2.1 / 2013-02-09

  • Bugs Fixed:

    • As seen in rspec/rspec-expectations#200, the release of Diff::LCS 1.2 introduced an unnecessary public API change to Diff::LCS::Hunk (see the change at rspec/rspec-expectations@3d6fc82c for details). The new method name (and behaviour) is more correct, but I should not have renamed the function or should have at least provided an alias. This release restores Diff::LCS::Hunk#unshift as an alias to #merge. Note that the old #unshift behaviour was incorrect and will not be restored.

1.2.0 / 2013-01-21

  • Minor Enhancements:

    • Added special case handling for Diff::LCS.patch so that it handles patches that are empty or contain no changes.
    • Added two new methods (#patch_me and #unpatch_me) to the includable module.

  • Bugs Fixed:

    • Fixed issue #1 patch direction detection.
    • Resolved issue #2 by handling string[string.size, 1] properly (it returns "" not nil).
    • Michael Granger (ged) fixed an implementation error in Diff::LCS::Change and added specs in pull request #8. Thanks!
    • Made the code auto-testable.
    • Vít Ondruch (voxik) provided the latest version of the GPL2 license file in pull request #10. Thanks!
    • Fixed a documentation issue with the includable versions of #patch! and #unpatch! where they implied that they would replace the original value. Given that Diff::LCS.patch always returns a copy, the documentation was incorrect and has been corrected. To provide the behaviour that was originally documented, two new methods were added to provide this behaviour. Found by scooter-dangle in issue #12. Thanks!

  • Code Style Changes:

    • Removed trailing spaces.
    • Calling class methods using . instead of ::.
    • Vít Ondruch (voxik) removed unnecessary shebangs in pull request #9. Thanks!
    • Kenichi Kamiya (kachick) removed some warnings of an unused variable in lucky pull request #13. Thanks!
    • Embarked on a major refactoring to make the files a little more manageable and understand the code on a deeper level.
    • Adding to http://travis-ci.org.

1.1.3 / 2011-08-27

  • Converted to 'hoe' for release.

  • Converted tests to RSpec 2.

  • Extracted the body of htmldiff into a class available from diff/lcs/htmldiff.

  • Migrated development and issue tracking to GitHub.

  • Bugs fixed:

    • Eliminated the explicit use of RubyGems in both bin/htmldiff and bin/ldiff. Resolves issue #4.
    • Eliminated Ruby warnings. Resolves issue #3.

1.1.2 / 2004-10-20

  • Fixed a problem reported by Mauricio Fernandez in htmldiff.

1.1.1 / 2004-09-25

  • Fixed bug #891 (Set returned from patch command does not contain last equal part).
  • Fixed a problem with callback initialisation code (it assumed that all callbacks passed as classes can be initialised; now, it rescues NoMethodError in the event of private :new being called).
  • Modified the non-initialisable callbacks to have a private #new method.
  • Moved ldiff core code to Diff::LCS::Ldiff (diff/lcs/ldiff.rb).

1.1.0 / -

  • Eliminated the need for Diff::LCS::Event and removed it.
  • Added a contextual diff callback, Diff::LCS::ContextDiffCallback.
  • Implemented patching/unpatching for standard Diff callback output formats with both #diff and #sdiff.
  • Extensive documentation changes.

1.0.4

  • Fixed a problem with bin/ldiff output, especially for unified format. Newlines that should have been present weren't.
  • Changed the .tar.gz installer to generate Windows batch files if ones do not exist already. Removed the existing batch files as they didn't work.

1.0.3

  • Fixed a problem with #traverse_sequences where the first difference from the left sequence might not be appropriately captured.

1.0.2

  • Fixed an issue with ldiff not working because actions were changed from symbols to strings.

1.0.1

  • Minor modifications to the gemspec, the README.
  • Renamed the diff program to ldiff (as well as the companion batch file) so as to not collide with the standard diff program.
  • Fixed issues with RubyGems. Requires RubyGems > 0.6.1 or >= 0.6.1 with the latest CVS version.

1.0

  • Initial release based mostly on Perl's Algorithm::Diff.