1.15.0 - Apr 9, 2020

Changes

1.15.0 - Mar 29 2020

This release provides a major (~5x) speedup for RiveScripts that have
a large number of substitutions, and also fixes the following issues:

• Add a prepare_brain_transplant method to clear the RiveScript brain
  in preparation to load in a new one, while optionally preserving
  much of the current state (enh #81)
• Implement the trigger_info method (bug #120)
• Fix the issue of a "=" appearing in a variable value (bug #130)
• Allow nested brackets (bug #132)
• Fix trigger sorting to only count the existance of stars, optionals,
  etc. instead of how many there are in a trigger (bug #133)
• Fix the debug message for incomment (bug #138)
• Fix substitutions if they occur more than 3 times on a line (bug #140)
• Fix crash in set_substitution method (bug #142)
• Fix issue in set_person method (bug #143)
• Significantly improve code coverage of tests (add test_coverage.py)

1.14.9 - Sept 21 2017

Changes

This release fixes some regular expressions and adds better Unicode
compatibility for trigger matching.

• Fix the regexp that matches {weight} tags in replies to use re.search()
  instead of re.match(). This ensures that random replies are chosen with the
  correct weighting applied (bug #102; PR #106)
• Fix the way arrays are interpolated into triggers so that array names are
  now allowed to contain underscores (bug #101; PR #107)
• Fix Unicode handling in regular expressions by using the re.UNICODE flag.
  This allows for a trigger containing optionals, like [*], to match
  correctly when adjacent to Unicode symbols such as umlauts (bug #37; PR #108)

1.14.8 - Sept 5 2017

Changes

This release focuses on bug fixes and backwards compatible improvements.

• Improvements to the new trigger sorting algorithm:
  • Triggers containing no text (wildcards only) are sorted nearer to the end
    (bug #94)
• Trigger components containing an empty string between pipes (e.g. [|]) now
  raises a syntax error at parsing time (bug #87)
• Fix the parsing of ^ when used on a +Trigger not being fully evaluated
  before syntax checking for the trigger was done (bug #86)
• Remove extra space characters inside optionals (bug #98)
• Improve the syntax checker by having it raise errors when certain "tag
  characters" are mismatched or opened and closed in the wrong order -- for
  example {<}> (PR #103)
• Fix the deparse() and write() functions so they work again with the
  latest version of RiveScript (bug #76)

1.14.7 - May 19 2017

Changes

• Various fixes and improvements that catch RiveScript-Python up with the other
  implementations, to pass the RiveScript Test Suite (PR #89):
  • Implement arrays in replies -- so you could write a reply like
    My favorite color is (@colors) and the array gets expanded to a random
    item from the !array by the same name.
  • Fix the regexp for {weight} tag removal so that it still works if you
    include extra spaces on either end of the tag.
  • Fix the _ wildcard to allow matching Unicode letters.
  • Fix division with the <div> tag to use integer division for Python 3.
• Improvements to the trigger sorting algorithm:
  • Add special handling so that a trigger of [*] gets sorted above the
    usual catch-all trigger of * (PR #92)
  • Fix a logic bug with bitwise operators for handling the case that a trigger
    contains * wildcards but does not contain any optionals or wildcards of
    different types (bug #90, PR #91)

1.14.6 - March 23 2017

Changes

• Fix regexp for validating RiveScript syntax to use re.search instead of
  re.match (bug #82).
• Allow object macros to contain capital letters in their names (PR #83).

1.14.5 - February 20, 2017

Changes

• Bugfix when storing the user's last_match variable when a %Previous is
  active (it was storing a regexp object and not a string), to help third party
  session drivers (e.g. Redis) to work.

1.14.4 - December 14 2016

Changes

• Fix the last_match() function so that it returns None when there was no
  match instead of "undefined" (PR #63).
• Strip leading and trailing whitespace from user messages, and consolidate
  repeated whitespace into a single space character (PR #62).

1.14.3 - December 8 2016

Changes

1.14.3 Dec 8 2016

• Fix sorting algorithm for triggers with %Previous, making their sort order
  deterministic and correct regardless of the order they appeared in the
  source file (PR #60; bug #59)
• Fix a possible crash when interpolating a <star> tag when the trigger
  had captured no stars. In this cases the <star> tag will become the string
  "None"; it is a user error that this situation arises anyway and this fix
  just prevents Python from crashing (bugs #51 and #54)
• Fix a possible crash when calling random.choice on an empty list by
  wrapping it in a safety function at rivescript.utils.random_choice
  (bug #36)
• Better error reporting on the JSON Interactive Mode: if there is an
  exception raised when decoding the input JSON, the output JSON now contains
  an error key with the text of the exception to help diagnose what went
  wrong.

1.14.2 - October 18 2016

Changes

1.14.2 Oct 18 2016

• Fix numeric tags like <add> raising a TypeError exception.

1.14.1 - August 9 2016

Changes

1.14.1 Aug 9 2016

• Fix a regression when handling Unicode strings under Python 2 (bug #40).