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  23 </div>
  24 <div class="section">
  25 <div class="titlepage"><div><div><h3 class="title">
  26 <a name="boost_regex.background_information.history"></a><a class="link" href="history.html" title="History">History</a>
  27 </h3></div></div></div>
  28 <p>
  29         New issues should be submitted at <a href="http://svn.boost.org" target="_top">svn.boost.org</a>
  30         - don't forget to include your email address in the ticket!
  31       </p>
  32 <p>
  33         Currently open issues can be viewed <a href="https://svn.boost.org/trac/boost/query?status=assigned&amp;status=new&amp;status=reopened&amp;component=regex&amp;order=priority&amp;col=id&amp;col=summary&amp;col=status&amp;col=type&amp;col=milestone&amp;col=component" target="_top">here</a>.
  34       </p>
  35 <p>
  36         All issues including closed ones can be viewed <a href="https://svn.boost.org/trac/boost/query?status=assigned&amp;status=closed&amp;status=new&amp;status=reopened&amp;component=regex&amp;order=priority&amp;col=id&amp;col=summary&amp;col=status&amp;col=type&amp;col=milestone&amp;col=component" target="_top">here</a>.
  37       </p>
  38 <h5>
  39 <a name="boost_regex.background_information.history.h0"></a>
  40         <span class="phrase"><a name="boost_regex.background_information.history.boost_regex_5_1_2_boost_1_62_0"></a></span><a class="link" href="history.html#boost_regex.background_information.history.boost_regex_5_1_2_boost_1_62_0">Boost.Regex-5.1.2
  41         (Boost-1.62.0)</a>
  42       </h5>
  43 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
  44 <li class="listitem">
  45             Fix buffer over-run error when parsing certain invalid regexes, see
  46             <a href="https://svn.boost.org/trac/boost/ticket/12222" target="_top">#12222</a>.
  47           </li>
  48 <li class="listitem">
  49             Fix detection of ICU in library build, see <a href="https://svn.boost.org/trac/boost/ticket/12152" target="_top">#12152</a>.
  50           </li>
  51 <li class="listitem">
  52             Fix bug in case sensitivity change, see <a href="https://svn.boost.org/trac/boost/ticket/11940" target="_top">#11940</a>.
  53           </li>
  54 <li class="listitem">
  55             Allow types wider than int in <code class="computeroutput"><span class="special">\</span><span class="identifier">x</span><span class="special">{}</span></code>
  56             expressions (for char32_t etc), see <a href="https://svn.boost.org/trac/boost/ticket/11988" target="_top">#11988</a>.
  57           </li>
  58 </ul></div>
  59 <h5>
  60 <a name="boost_regex.background_information.history.h1"></a>
  61         <span class="phrase"><a name="boost_regex.background_information.history.boost_regex_5_1_1_boost_1_61_0"></a></span><a class="link" href="history.html#boost_regex.background_information.history.boost_regex_5_1_1_boost_1_61_0">Boost.Regex-5.1.1
  62         (Boost-1.61.0)</a>
  63       </h5>
  64 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
  65             Change to lockfree implementation of memory cache, see <a href="https://github.com/boostorg/regex/pull/23" target="_top">PR#23</a>.
  66           </li></ul></div>
  67 <h5>
  68 <a name="boost_regex.background_information.history.h2"></a>
  69         <span class="phrase"><a name="boost_regex.background_information.history.boost_regex_5_1_0_boost_1_60_0"></a></span><a class="link" href="history.html#boost_regex.background_information.history.boost_regex_5_1_0_boost_1_60_0">Boost.Regex-5.1.0
  70         (Boost-1.60.0)</a>
  71       </h5>
  72 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
  73 <li class="listitem">
  74             Add support for Perl's backtracking control verbs, see <a href="https://svn.boost.org/trac/boost/ticket/11205" target="_top">#11205</a>.
  75             Note however, that (*MARK) and operations on marks are not currently
  76             supported.
  77           </li>
  78 <li class="listitem">
  79             Fix incorrect range end when matching [[:unicode:]], see <a href="https://svn.boost.org/trac/boost/ticket/11524" target="_top">#11524</a>.
  80           </li>
  81 <li class="listitem">
  82             Change POSIX reg_comp API to not check potentially uninitialized memory,
  83             note that code which was previously free from memory leaks (but none
  84             the less buggy, as it didn't call reg_free) will now leak. See <a href="https://svn.boost.org/trac/boost/ticket/11472" target="_top">#11472</a>.
  85           </li>
  86 <li class="listitem">
  87             Make sub_match a valid C++ range type, see <a href="https://svn.boost.org/trac/boost/ticket/11036" target="_top">#11036</a>.
  88           </li>
  89 </ul></div>
  90 <h5>
  91 <a name="boost_regex.background_information.history.h3"></a>
  92         <span class="phrase"><a name="boost_regex.background_information.history.boost_regex_5_0_1_boost_1_58_0"></a></span><a class="link" href="history.html#boost_regex.background_information.history.boost_regex_5_0_1_boost_1_58_0">Boost.Regex-5.0.1
  93         (Boost-1.58.0)</a>
  94       </h5>
  95 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
  96 <li class="listitem">
  97             Fixed some typos as in <a href="https://svn.boost.org/trac/boost/ticket/10682" target="_top">#10682</a>.
  98           </li>
  99 <li class="listitem">
 100             Merged <a href="https://github.com/boostorg/regex/pull/6" target="_top">pull-request
 101             #6</a> for Coverity warnings.
 102           </li>
 103 <li class="listitem">
 104             Merged <a href="https://github.com/boostorg/regex/pull/7" target="_top">pull-request
 105             #7</a> for Coverity warnings.
 106           </li>
 107 <li class="listitem">
 108             Merged <a href="https://github.com/boostorg/regex/pull/8" target="_top">pull-request
 109             #8</a> for Coverity warnings.
 110           </li>
 111 <li class="listitem">
 112             Merged <a href="https://github.com/boostorg/regex/pull/10" target="_top">pull-request
 113             #10</a> to enable more build variants when linking to ICU.
 114           </li>
 115 <li class="listitem">
 116             Fix issue with ICU and partial matches, see <a href="https://svn.boost.org/trac/boost/ticket/10114" target="_top">#10114</a>.
 117           </li>
 118 <li class="listitem">
 119             Removed delayload support for the ICU libraries: this doesn't work with
 120             the latest ICU releases (linker errors).
 121           </li>
 122 </ul></div>
 123 <h5>
 124 <a name="boost_regex.background_information.history.h4"></a>
 125         <span class="phrase"><a name="boost_regex.background_information.history.boost_regex_5_0_0_boost_1_56_0"></a></span><a class="link" href="history.html#boost_regex.background_information.history.boost_regex_5_0_0_boost_1_56_0">Boost.Regex-5.0.0
 126         (Boost-1.56.0)</a>
 127       </h5>
 128 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
 129 <li class="listitem">
 130             Moved to library-specific version number post the move to Git. And since
 131             we have one (minor) breaking change this gets bumped up from v4 to v5.
 132           </li>
 133 <li class="listitem">
 134             <span class="bold"><strong>Breaking change:</strong></span> corrected behavior
 135             of <code class="computeroutput"><span class="identifier">basic_regex</span><span class="special">&lt;&gt;::</span><span class="identifier">mark_count</span><span class="special">()</span></code>
 136             to match existing documentation, <code class="computeroutput"><span class="identifier">basic_regex</span><span class="special">&lt;&gt;::</span><span class="identifier">subexpression</span><span class="special">(</span><span class="identifier">n</span><span class="special">)</span></code> changed to match, see <a href="https://svn.boost.org/trac/boost/ticket/9227" target="_top">#9227</a>
 137           </li>
 138 <li class="listitem">
 139             Fixed issue <a href="https://svn.boost.org/trac/boost/ticket/8903" target="_top">#8903</a>.
 140           </li>
 141 <li class="listitem">
 142             Fixed documentation typos from <a href="https://svn.boost.org/trac/boost/ticket/9283" target="_top">#9283</a>.
 143           </li>
 144 <li class="listitem">
 145             Fixed bug in collation code that failed if the locale generated collation
 146             strings with embedded nul's, see <a href="https://svn.boost.org/trac/boost/ticket/9451" target="_top">#9451</a>.
 147           </li>
 148 <li class="listitem">
 149             Apply patch for unusual thread usage (no statically initialized mutexes),
 150             see <a href="https://svn.boost.org/trac/boost/ticket/9461" target="_top">#9461</a>.
 151           </li>
 152 <li class="listitem">
 153             Added better checks for invalid UTF-8 sequences, see <a href="https://svn.boost.org/trac/boost/ticket/9473" target="_top">#9473</a>.
 154           </li>
 155 </ul></div>
 156 <h5>
 157 <a name="boost_regex.background_information.history.h5"></a>
 158         <span class="phrase"><a name="boost_regex.background_information.history.boost_1_54"></a></span><a class="link" href="history.html#boost_regex.background_information.history.boost_1_54">Boost-1.54</a>
 159       </h5>
 160 <p>
 161         Fixed issue <a href="https://svn.boost.org/trac/boost/ticket/8569" target="_top">#8569</a>.
 162       </p>
 163 <h5>
 164 <a name="boost_regex.background_information.history.h6"></a>
 165         <span class="phrase"><a name="boost_regex.background_information.history.boost_1_53"></a></span><a class="link" href="history.html#boost_regex.background_information.history.boost_1_53">Boost-1.53</a>
 166       </h5>
 167 <p>
 168         Fixed Issues: <a href="https://svn.boost.org/trac/boost/ticket/7744" target="_top">#7744</a>,
 169         <a href="https://svn.boost.org/trac/boost/ticket/7644" target="_top">#7644</a>.
 170       </p>
 171 <h5>
 172 <a name="boost_regex.background_information.history.h7"></a>
 173         <span class="phrase"><a name="boost_regex.background_information.history.boost_1_51"></a></span><a class="link" href="history.html#boost_regex.background_information.history.boost_1_51">Boost-1.51</a>
 174       </h5>
 175 <p>
 176         Fixed issues: <a href="https://svn.boost.org/trac/boost/ticket/589" target="_top">#589</a>,
 177         <a href="https://svn.boost.org/trac/boost/ticket/7084" target="_top">#7084</a>,
 178         <a href="https://svn.boost.org/trac/boost/ticket/7032" target="_top">#7032</a>,
 179         <a href="https://svn.boost.org/trac/boost/ticket/6346" target="_top">#6346</a>.
 180       </p>
 181 <h5>
 182 <a name="boost_regex.background_information.history.h8"></a>
 183         <span class="phrase"><a name="boost_regex.background_information.history.boost_1_50"></a></span><a class="link" href="history.html#boost_regex.background_information.history.boost_1_50">Boost-1.50</a>
 184       </h5>
 185 <p>
 186         Fixed issue with <code class="computeroutput"><span class="special">(?!)</span></code> not being
 187         a valid expression, and updated docs on what constitutes a valid conditional
 188         expression.
 189       </p>
 190 <h5>
 191 <a name="boost_regex.background_information.history.h9"></a>
 192         <span class="phrase"><a name="boost_regex.background_information.history.boost_1_48"></a></span><a class="link" href="history.html#boost_regex.background_information.history.boost_1_48">Boost-1.48</a>
 193       </h5>
 194 <p>
 195         Fixed issues: <a href="https://svn.boost.org/trac/boost/ticket/688" target="_top">#698</a>,
 196         <a href="https://svn.boost.org/trac/boost/ticket/5835" target="_top">#5835</a>,
 197         <a href="https://svn.boost.org/trac/boost/ticket/5958" target="_top">#5958</a>,
 198         <a href="https://svn.boost.org/trac/boost/ticket/5736" target="_top">#5736</a>.
 199       </p>
 200 <h5>
 201 <a name="boost_regex.background_information.history.h10"></a>
 202         <span class="phrase"><a name="boost_regex.background_information.history.boost_1_47"></a></span><a class="link" href="history.html#boost_regex.background_information.history.boost_1_47">Boost 1.47</a>
 203       </h5>
 204 <p>
 205         Fixed issues: <a href="https://svn.boost.org/trac/boost/ticket/5223" target="_top">#5223</a>,
 206         <a href="https://svn.boost.org/trac/boost/ticket/5353" target="_top">#5353</a>,
 207         <a href="https://svn.boost.org/trac/boost/ticket/5363" target="_top">#5363</a>,
 208         <a href="https://svn.boost.org/trac/boost/ticket/5462" target="_top">#5462</a>,
 209         <a href="https://svn.boost.org/trac/boost/ticket/5472" target="_top">#5472</a>,
 210         <a href="https://svn.boost.org/trac/boost/ticket/5504" target="_top">#5504</a>.
 211       </p>
 212 <h5>
 213 <a name="boost_regex.background_information.history.h11"></a>
 214         <span class="phrase"><a name="boost_regex.background_information.history.boost_1_44"></a></span><a class="link" href="history.html#boost_regex.background_information.history.boost_1_44">Boost 1.44</a>
 215       </h5>
 216 <p>
 217         Fixed issues: <a href="https://svn.boost.org/trac/boost/ticket/4309" target="_top">#4309</a>,
 218         <a href="https://svn.boost.org/trac/boost/ticket/4215" target="_top">#4215</a>,
 219         <a href="https://svn.boost.org/trac/boost/ticket/4212" target="_top">#4212</a>,
 220         <a href="https://svn.boost.org/trac/boost/ticket/4191" target="_top">#4191</a>,
 221         <a href="https://svn.boost.org/trac/boost/ticket/4132" target="_top">#4132</a>,
 222         <a href="https://svn.boost.org/trac/boost/ticket/4123" target="_top">#4123</a>,
 223         <a href="https://svn.boost.org/trac/boost/ticket/4114" target="_top">#4114</a>,
 224         <a href="https://svn.boost.org/trac/boost/ticket/4036" target="_top">#4036</a>,
 225         <a href="https://svn.boost.org/trac/boost/ticket/4020" target="_top">#4020</a>,
 226         <a href="https://svn.boost.org/trac/boost/ticket/3941" target="_top">#3941</a>,
 227         <a href="https://svn.boost.org/trac/boost/ticket/3902" target="_top">#3902</a>,
 228         <a href="https://svn.boost.org/trac/boost/ticket/3890" target="_top">#3890</a>
 229       </p>
 230 <h5>
 231 <a name="boost_regex.background_information.history.h12"></a>
 232         <span class="phrase"><a name="boost_regex.background_information.history.boost_1_42"></a></span><a class="link" href="history.html#boost_regex.background_information.history.boost_1_42">Boost 1.42</a>
 233       </h5>
 234 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
 235 <li class="listitem">
 236             Added support for Functors rather than strings as format expressions.
 237           </li>
 238 <li class="listitem">
 239             Improved error reporting when throwing exceptions to include better more
 240             relevant information.
 241           </li>
 242 <li class="listitem">
 243             Improved performance and reduced stack usage of recursive expressions.
 244           </li>
 245 <li class="listitem">
 246             Fixed tickets <a href="https://svn.boost.org/trac/boost/ticket/2802" target="_top">#2802</a>,
 247             <a href="https://svn.boost.org/trac/boost/ticket/3425" target="_top">#3425</a>,
 248             <a href="https://svn.boost.org/trac/boost/ticket/3507" target="_top">#3507</a>,
 249             <a href="https://svn.boost.org/trac/boost/ticket/3546" target="_top">#3546</a>,
 250             <a href="https://svn.boost.org/trac/boost/ticket/3631" target="_top">#3631</a>,
 251             <a href="https://svn.boost.org/trac/boost/ticket/3632" target="_top">#3632</a>,
 252             <a href="https://svn.boost.org/trac/boost/ticket/3715" target="_top">#3715</a>,
 253             <a href="https://svn.boost.org/trac/boost/ticket/3718" target="_top">#3718</a>,
 254             <a href="https://svn.boost.org/trac/boost/ticket/3763" target="_top">#3763</a>,
 255             <a href="https://svn.boost.org/trac/boost/ticket/3764" target="_top">#3764</a>
 256           </li>
 257 </ul></div>
 258 <h5>
 259 <a name="boost_regex.background_information.history.h13"></a>
 260         <span class="phrase"><a name="boost_regex.background_information.history.boost_1_40"></a></span><a class="link" href="history.html#boost_regex.background_information.history.boost_1_40">Boost 1.40</a>
 261       </h5>
 262 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
 263             Added support for many Perl 5.10 syntax elements including named sub-expressions,
 264             branch resets and recursive regular expressions.
 265           </li></ul></div>
 266 <h5>
 267 <a name="boost_regex.background_information.history.h14"></a>
 268         <span class="phrase"><a name="boost_regex.background_information.history.boost_1_38"></a></span><a class="link" href="history.html#boost_regex.background_information.history.boost_1_38">Boost 1.38</a>
 269       </h5>
 270 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
 271 <li class="listitem">
 272             <span class="bold"><strong>Breaking change</strong></span>: empty expressions,
 273             and empty alternatives are now allowed when using the Perl regular expression
 274             syntax. This change has been added for Perl compatibility, when the new
 275             <a class="link" href="../ref/syntax_option_type.html" title="syntax_option_type"><code class="computeroutput"><span class="identifier">syntax_option_type</span></code></a>
 276             <span class="emphasis"><em>no_empty_expressions</em></span> is set then the old behaviour
 277             is preserved and empty expressions are prohibited. This is issue <a href="https://svn.boost.org/trac/boost/ticket/1081" target="_top">#1081</a>.
 278           </li>
 279 <li class="listitem">
 280             Added support for Perl style ${n} expressions in format strings (issue
 281             <a href="https://svn.boost.org/trac/boost/ticket/2556" target="_top">#2556</a>).
 282           </li>
 283 <li class="listitem">
 284             Added support for accessing the location of sub-expressions within the
 285             regular expression string (issue <a href="https://svn.boost.org/trac/boost/ticket/2269" target="_top">#2269</a>).
 286           </li>
 287 <li class="listitem">
 288             Fixed compiler compatibility issues <a href="https://svn.boost.org/trac/boost/ticket/2244" target="_top">#2244</a>,
 289             <a href="https://svn.boost.org/trac/boost/ticket/2514" target="_top">#2514</a>,
 290             and <a href="https://svn.boost.org/trac/boost/ticket/2244" target="_top">#2458</a>.
 291           </li>
 292 </ul></div>
 293 <h5>
 294 <a name="boost_regex.background_information.history.h15"></a>
 295         <span class="phrase"><a name="boost_regex.background_information.history.boost_1_34"></a></span><a class="link" href="history.html#boost_regex.background_information.history.boost_1_34">Boost 1.34</a>
 296       </h5>
 297 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
 298 <li class="listitem">
 299             Fix for non-greedy repeats and partial matches not working correctly
 300             in some cases.
 301           </li>
 302 <li class="listitem">
 303             Fix for non-greedy repeats on VC++ not working in some cases (bug report
 304             1515830).
 305           </li>
 306 <li class="listitem">
 307             Changed match_results::position() to return a valid result when *this
 308             represents a partial match.
 309           </li>
 310 <li class="listitem">
 311             Fixed the grep and egrep options so that the newline character gets treated
 312             the same as |.
 313           </li>
 314 </ul></div>
 315 <h5>
 316 <a name="boost_regex.background_information.history.h16"></a>
 317         <span class="phrase"><a name="boost_regex.background_information.history.boost_1_33_1"></a></span><a class="link" href="history.html#boost_regex.background_information.history.boost_1_33_1">Boost 1.33.1</a>
 318       </h5>
 319 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
 320 <li class="listitem">
 321             Fixed broken makefiles.
 322           </li>
 323 <li class="listitem">
 324             Fixed configuration setup to allow building with VC7.1 - STLport-4.6.2
 325             when using /Zc:wchar_t.
 326           </li>
 327 <li class="listitem">
 328             Moved declarations class-inline in static_mutex.hpp so that SGI Irix
 329             compiler can cope.
 330           </li>
 331 <li class="listitem">
 332             Added needed standard library #includes to fileiter.hpp, regex_workaround.hpp
 333             and cpp_regex_traits.hpp.
 334           </li>
 335 <li class="listitem">
 336             Fixed a bug where non-greedy repeats could in certain strange circumstances
 337             repeat more times than their maximum value.
 338           </li>
 339 <li class="listitem">
 340             Fixed the value returned by basic_regex&lt;&gt;::empty() from a default
 341             constructed object.
 342           </li>
 343 <li class="listitem">
 344             Changed the definition of regex_error to make it backwards compatible
 345             with Boost-1.32.0.
 346           </li>
 347 <li class="listitem">
 348             Disabled external templates for Intel C++ 8.0 and earlier - otherwise
 349             unresolved references can occur.
 350           </li>
 351 <li class="listitem">
 352             Rewritten extern template code for gcc so that only specific member functions
 353             are exported: otherwise strange unresolved references can occur when
 354             linking and mixing debug and non-debug code.
 355           </li>
 356 <li class="listitem">
 357             Initialise all the data members of the unicode_iterators: this keeps
 358             gcc from issuing needless warnings.
 359           </li>
 360 <li class="listitem">
 361             Ported the ICU integration code to VC6 and VC7.
 362           </li>
 363 <li class="listitem">
 364             Ensured code is STLport debug mode clean.
 365           </li>
 366 <li class="listitem">
 367             Fixed lookbehind assertions so that fixed length repeats are permitted,
 368             and so that regex iteration allows lookbehind to look back before the
 369             current search range (into the last match).
 370           </li>
 371 <li class="listitem">
 372             Fixed strange bug with non-greedy repeats inside forward lookahead assertions.
 373           </li>
 374 <li class="listitem">
 375             Enabled negated character classes inside character sets.
 376           </li>
 377 <li class="listitem">
 378             Fixed regression so that [a-z-] is a valid expression again.
 379           </li>
 380 <li class="listitem">
 381             Fixed bug that allowed some invalid expressions to be accepted.
 382           </li>
 383 </ul></div>
 384 <h5>
 385 <a name="boost_regex.background_information.history.h17"></a>
 386         <span class="phrase"><a name="boost_regex.background_information.history.boost_1_33_0"></a></span><a class="link" href="history.html#boost_regex.background_information.history.boost_1_33_0">Boost 1.33.0</a>
 387       </h5>
 388 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
 389 <li class="listitem">
 390             Completely rewritten expression parsing code, and traits class support;
 391             now conforms to the standardization proposal.
 392           </li>
 393 <li class="listitem">
 394             Breaking Change: The syntax options that can be passed to basic_regex
 395             constructors have been rationalized. The default option (perl) now has
 396             a value of zero, and it is now clearly documented which options apply
 397             to which regular expression syntax styles (perl, POSIX-extended, POSIX-basic
 398             etc). Some of the more esoteric options have now been removed, so there
 399             is the possibility that existing code may fail to compile: however equivalent
 400             functionality should still be available.
 401           </li>
 402 <li class="listitem">
 403             Breaking Change: POSIX-extended and POSIX-basic regular expressions now
 404             enforce the letter of the POSIX standard much more closely than before.
 405           </li>
 406 <li class="listitem">
 407             Added support for (?imsx-imsx) constructs.
 408           </li>
 409 <li class="listitem">
 410             Added support for lookbehind expressions (?&lt;=positive-lookbehind)
 411             and (?&lt;!negative-lookbehind).
 412           </li>
 413 <li class="listitem">
 414             Added support for conditional expressions (?(assertion)true-expression|false-expression).
 415           </li>
 416 <li class="listitem">
 417             Added MFC/ATL string wrappers.
 418           </li>
 419 <li class="listitem">
 420             Added Unicode support; based on ICU.
 421           </li>
 422 <li class="listitem">
 423             Changed newline support to recognise \f as a line separator (all character
 424             types), and \x85 as a line separator for wide characters / Unicode only.
 425           </li>
 426 <li class="listitem">
 427             Added a new format flag format_literal that treats the replace string
 428             as a literal, rather than a Perl or Sed style format string.
 429           </li>
 430 <li class="listitem">
 431             Errors are now reported by throwing exceptions of type regex_error. The
 432             types used previously - bad_expression and bad_pattern - are now just
 433             typedefs for regex_error. Type regex_error has a couple of new members:
 434             code() to report an error code rather than a string, and position() to
 435             report where in the expression the error occurred.
 436           </li>
 437 </ul></div>
 438 <h5>
 439 <a name="boost_regex.background_information.history.h18"></a>
 440         <span class="phrase"><a name="boost_regex.background_information.history.boost_1_32_1"></a></span><a class="link" href="history.html#boost_regex.background_information.history.boost_1_32_1">Boost 1.32.1</a>
 441       </h5>
 442 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem">
 443             Fixed bug in partial matches of bounded repeats of '.'.
 444           </li></ul></div>
 445 <h5>
 446 <a name="boost_regex.background_information.history.h19"></a>
 447         <span class="phrase"><a name="boost_regex.background_information.history.boost_1_31_0"></a></span><a class="link" href="history.html#boost_regex.background_information.history.boost_1_31_0">Boost 1.31.0</a>
 448       </h5>
 449 <div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
 450 <li class="listitem">
 451             Completely rewritten pattern matching code - it is now up to 10 times
 452             faster than before.
 453           </li>
 454 <li class="listitem">
 455             Reorganized documentation.
 456           </li>
 457 <li class="listitem">
 458             Deprecated all interfaces that are not part of the regular expression
 459             standardization proposal.
 460           </li>
 461 <li class="listitem">
 462             Added regex_iterator and regex_token_iterator .
 463           </li>
 464 <li class="listitem">
 465             Added support for Perl style independent sub-expressions.
 466           </li>
 467 <li class="listitem">
 468             Added non-member operators to the sub_match class, so that you can compare
 469             sub_match's with strings, or add them to a string to produce a new string.
 470           </li>
 471 <li class="listitem">
 472             Added experimental support for extended capture information.
 473           </li>
 474 <li class="listitem">
 475             Changed the match flags so that they are a distinct type (not an integer),
 476             if you try to pass the match flags as an integer rather than match_flag_type
 477             to the regex algorithms then you will now get a compiler error.
 478           </li>
 479 </ul></div>
 480 </div>
 481 <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
 482 <td align="left"></td>
 483 <td align="right"><div class="copyright-footer">Copyright &#169; 1998-2013 John Maddock<p>
 484         Distributed under the Boost Software License, Version 1.0. (See accompanying
 485         file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
 486       </p>
 487 </div></td>
 488 </tr></table>
 489 <hr>
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