** stringi package NEWS and CHANGELOG **
========================================


* 0.2-4 (2014-05-15) **CRAN**

   * [BUGFIX] Issues with loading of misaligned addresses in stri_*_fixed.


* 0.2-3 (2014-05-14) **CRAN**

   * [IMPORTANT CHANGE] stri_cmp* now do not allow for passing opts_collator=NA.
      From now on, stri_cmp_eq, stri_cmp_neq, and the new operators
      %===%, %!==%, %stri===%, and %stri!==% are locale-independent operations,
      which base on code point comparisons. New functions stri_cmp_equiv
      and stri_cmp_nequiv (and from now on also %==%, %!=%, %stri==%,
      and %stri!=%) test for canonical equivalence.

   * [IMPORTANT CHANGE] stri_*_fixed search functions now perform
      a locale-independent exact (bytewise, of course after conversion to UTF-8)
      pattern search. All the Collator-based, locale-dependent search routines
      are now available via stri_*_coll. The reason for this is that
      ICU USearch has currently very poor performance and in many search tasks
      in fact it is sufficient to do exact pattern matching.

   * stri_*_fixed now use a tweaked Knuth-Morris-Pratt search algorithm,
      which improves the search performance drastically.


* 0.2-2 (2014-05-01) **devel**

   * [IMPORTANT CHANGE] stri_enc_nf* and stri_enc_isnf* function families
      have been renamed to stri_trans_nf* and stri_trans_isnf*, respectively.
      This is because they deal with text transforming, and not with character
      encoding. Moreover, all such operation may be performed by
      ICU's Transliterator (see below).

   * [NEW FUNCTION] stri_trans_general, stri_trans_list give access
      to ICU's Transliterator: may be used to perform very general
      text transforms.

   * [NEW FUNCTION stri_split_boundaries utilizes ICU's BreakIterator
      to split strings at specific text boundaries. Moreover,
      stri_locate_boundaries indicates positions of these boundaries.

   * [NEW FUNCTION] stri_extract_words uses ICU's BreakIterator to
      extract all words from a text. Additionally, stri_locate_words
      locates start and end positions of words in a text.

   * [NEW FUNCTION] stri_pad, stri_pad_left, stri_pad_right, stri_pad_both
      pad a string with a specific code point.

   * [NEW FUNCTION] stri_wrap breaks paragraphs of text into lines.
     Two algorihms (greedy and minimal-raggedness) are available.


* 0.2-1 (2014-04-18) **devel**

   * [IMPORTANT CHANGE] stri_*_charclass search functions now
     rely solely on ICU's UnicodeSet patterns. All previously accepted
     charclass identifiers became invalid. However, new patterns
     should now be more familiar to the users (they are regex-like).
     Moreover, we observe a very nice performance gain.

   * [IMPORTANT CHANGE] stri_sort now does not include NAs
     in output vectors by default, for compatibility with sort().
     Moreover, currently none of the input vector's attributes are preserved.

   * [NEW FUNCTION] stri_unique extracts unique elements from
        a character vector.

   * [NEW FUNCTIONS] stri_duplicated and stri_duplicated_any
        determine duplicate elements in a character vector.

   * [NEW FUNCTION] stri_replace_na replaces NAs in a character vector
      with a given string, useful for emulating e.g. R's paste() behavior.

   * [NEW FUNCTION] stri_rand_shuffle generates a random permutation
      of code points in a string.

   * [NEW FUNCTION] stri_rand_strings generates random strings.

   * [NEW FUNCTIONS] New functions and binary operators for string comparison:
      stri_cmp_eq, stri_cmp_neq, stri_cmp_lt, stri_cmp_le, stri_cmp_gt,
      stri_cmp_ge, %==%, %!=%, %<%, %<=%, %>%, %>=%.

   * [NEW FUNCTION] stri_enc_mark reads declared encodings of character strings
      as seen by stringi.

   * [NEW FUNCTION] stri_enc_tonative(str) is an alias to
      stri_encode(str, NULL, NULL).

   * [NEW FEATURE] stri_order and stri_sort now have an additional argument
      `na_last` (defaults to TRUE and NA, respectively).

   * [NEW FEATURE] stri_replace_all_charclass now has `merge` arg
      (defaults to FALSE for backward-compatibility). It may be used
      to e.g. replace sequences of white spaces with a single space.

   * [NEW FEATURE] stri_enc_toutf8 now has a new `validate` arg (defaults
      to FALSE for backward-compatibility). It may be used in a (rare) case
      in which a user wants to fix an invalid UTF-8 byte sequence.
      stri_length (among others) now detect invalid UTF-8 byte sequences.

   * [NEW FEATURE] All binary operators %???% now also have aliases %stri???%.

   * Performance improvements in StriContainerUTF8 and StriContainerUTF16
      (they affect most other functions).

   * Significant performance improvements in stri_join, stri_flatten,
      stri_cmp, stri_trans_to*, and others.

   * Added 3rd mirror site for our icudt binary distribution.

   * U_MISSING_RESOURCE_ERROR message in StriException now suggests
        calling stri_install_check().

   * [BUGFIX] UTF-8 BOMs are now silently removed from input strings.

   * [BUGFIX] no more attempts to re-encode UTF-8 encoded strings
     if native encoding=UTF-8 in StriContainerUTF8.

   * [BUGFIX] possible memory leaks when throwing errors via Rf_error.

   * [BUGFIX] stri_order and stri_cmp could return incorrect results
       for opts_collator=NA.

   * [BUGFIX] stri_sort did not guarantee to return strings in UTF-8.


* 0.1-25 (2014-03-12) **CRAN**

    * LICENCE tweaks.

    * Initial CRAN release.


* 0.1-24 (2014-03-11) **devel**

    * Fixed bugs detected with ASan and UBSan,
      e.g. fixed CharClass::gcmask type (enum -> uint32_t) (reported by UBSan).

    * Fixed array over-runs detected with valgrind in string8.h.

    * Fixed unitialized class fields in StriContainerUTF8
      (reported by valgrind).


* 0.1-23 (2014-03-11) **devel**

    * License changed to BSD-3-clause, COPYRIGHTS updated.

    * icudt is not shipped with stringi anymore;
      it is now downloaded in install.libs.R from one of our servers.

    * New functions: stri_install_check(), stri_install_icudt().


* 0.1-22 (2014-02-20) **devel**

   * System ICU is used on systems which do have one (version >= 50 needed).
     ICU is autodetected with pkg-config in ./configure.
     Pass '--disable-pkg-config' to ./configure to force building ICU from
     sources.
   
   * icudt52b (custom subset) is now shipped with stringi
     (for big-endian, ASCII systems).


* 0.1-21 (2014-02-19) **devel**

   * Fixed some Solaris-related issues while preparing stringi
     for CRAN submission.


* 0.1-20 (2014-02-17) **devel**

   * ICU4C 52.1 sources included (common, i18n, stubdata + icu52dt.dat
     loaded dynamically). Compilation via Makevars.
   
   * stringi now does not depend on any external libraries.


* 0.1-11 (2013-11-16) **devel**

   * ICU4C is now statically linked on Windows.

   * First OS X binary build.
   
   * The package is being intensively tested by our students @ FMIS WUT.


* 0.1-10 (2013-11-13) **devel**
   
   * Using pkg-config via ./configure to look for ICU4C libs.


* 0.1-6 (2013-07-05) **devel**

   * First Windows binary build.
   
   * Compilation passed on Oracle Sun Studio compiler collection.
   
   * By now we have implemented most of the functionality
     scheduled for milestone 0.1.


* 0.1-1 (2013-01-05) **devel**

   *  The stringi project has been established on GitHub.