released 1.6.3

Updated to Unicode 13; fixed start condition scope specifications for patterns that start with a '{'; updated lex.vim.

INSTALL.md

@@ -39,12 +39,12 @@ the **Source Files**.  Now you are all set!
 In addition, the `reflex/vs` directory contains batch scripts to build projects
 with MS Visual Studio C++.
 
-### Unix/Linux and Mac OS
+### Unix/Linux and macOS
 
-On Mac OS X you can use [homebrew](https://brew.sh) to install RE/flex with
-`brew install re-flex`.  Otherwise:
+On Linux and macOS systems you can use [homebrew](https://brew.sh) to install
+RE/flex with `brew install re-flex`.
 
-You have two options: 1) quick install or 2) configure and make.
+Otherwise, you have two options: 1) quick install or 2) configure and make.
 
 ### Quick install
 
@@ -100,7 +100,11 @@ work around this problem, run:
 
 - To use Boost.Regex as a regex engine with the RE/flex library and scanner
   generator, install [Boost][boost-url] and link your code against
-  `libboost_regex.a`
+  `-lboost_regex`.
+
+- To use PCRE2 as a regex engine with the RE/flex library and scanner
+  generator, install [PCRE2][pcre2-url] and link your code against
+  `-lpcre2-8`.
 
 - To visualize the FSM graphs generated with **reflex** option `--graphs-file`,
   install [Graphviz dot][dot-url].
@@ -122,13 +126,12 @@ To build the examples, first build the reflex tool and then execute:
     $ cd examples
     $ make
 
-If `libboost_regex.a` could not be found, then edit lib/Makefile to change the
-installation location of Boost so that `boost/regex.hpp` and `libboost_regex.a`
-can be properly located:
+If `libboost_regex` could not be found, then edit lib/Make to change the
+installation location of Boost so that `boost/regex.hpp` and `libboost_regex`
+can be properly located, for example:
 
-    BOOST=$(HOME)/boost
-    LIBS=../lib/reflex.a $(BOOST)/stage/lib/libboost_regex.a
-    CIFLAGS=-I. -I../include -I $(HOME)/boost
+    INCBOOST = /opt/local/include
+    LIBBOOST = /opt/local/lib/libboost_regex-mt.dylib
 
 
 Documentation
@@ -185,6 +188,7 @@ following files:
     |       |__ input.h
     |       |__ matcher.h
     |       |__ pattern.h
+    |       |__ pcre2matcher.h
     |       |__ posix.h
     |       |__ ranges.h
     |       |__ setop.h
@@ -254,7 +258,7 @@ License and copyright
 ---------------------
 
 RE/flex by Robert van Engelen, Genivia Inc.
-Copyright (c) 2015-2019, All rights reserved.   
+Copyright (c) 2016-2020, All rights reserved.   
 
 RE/flex is distributed under the BSD-3 license LICENSE.txt.
 Use, modification, and distribution are subject to the BSD-3 license.
@@ -268,3 +272,4 @@ Use, modification, and distribution are subject to the BSD-3 license.
 [dot-url]: http://www.graphviz.org
 [FSM-url]: https://www.genivia.com/images/reflex-FSM.png
 [boost-url]: http://www.boost.org
+[pcre2-url]: http://pcre.org

README.md

@@ -132,7 +132,10 @@ with MS Visual Studio C++.
 
 ### Unix/Linux and Mac OS X
 
-You have two options: 1) quick install or 2) configure and make.
+On Linux and macOS systems you can use [homebrew](https://brew.sh) to install
+RE/flex with `brew install re-flex`.
+
+Otherwise, you have two options: 1) quick install or 2) configure and make.
 
 **Note:** GCC 8 and greater may produce warnings of the sort *"note: parameter
 passing for argument ... changed in GCC 7.1"*.  These warnings can be ignored
@@ -499,7 +502,8 @@ Changelog
 - Feb  3, 2020: 1.5.8 added `wunput()` method; added `lex.vim` improved Flex and RE/flex Vim syntax highlighting; added `yaml.l` example; fixed `--freespace` with `--unicode` when bracket lists contain a `#`; character class operators `{+}`, `{-}`, `{&}` now accept defined names as first operands and inverted character classes; indent anchor `\k` now matches only when indent level is changed as documented.
 - Mar  2, 2020: 1.6.0 added PCRE2 regex matcher classes and updated reflex option `--matcher=pcre2-perl`; optimized RE/flex matcher `find()` with AVX/SSE2/NEON/AArch64; updated and improved regex converters.
 - Mar  3, 2020: 1.6.1 fixed missing PCRE2 regex type `std::string` in generated scanners.
-- Mar 10, 2020: 1.6.2 fixed MSVC++ x86 32-bit build error when `HAVE_AVX512BW` is enabled (requires AVX512BW).
+- Mar 10, 2020: 1.6.2 improved `reflex::PCRE2Matcher`; fixed MSVC++ x86 32-bit build error when `HAVE_AVX512BW` is enabled (requires AVX512BW).
+- Mar 19, 2020: 1.6.3 updated to Unicode 13; fixed start condition scope specifications for patterns that start with a `{`; updated lex.vim.
 
 [logo-url]: https://www.genivia.com/images/reflex-logo.png
 [reflex-url]: https://www.genivia.com/reflex.html

build.sh

@@ -28,7 +28,7 @@ if cc -march=native -c conftest.c >& /dev/null ; then
   echo
 else
 
-# check if this piece of metal has AVX
+# if not AVX512BW, check if this piece of metal has AVX
 cat > conftest.c << END
 #include <immintrin.h>
 main() { __m256i n = _mm256_set1_epi8(42); n = _mm256_and_si256(n, n); }