Add a new regex engine: GNU regex.

This checkin contains simply a first rough cut of the new code, which
passes the existing tests (but rewritten for Emacs syntax, in
emacs_sets.lua).

Documentation and complete code to expose the unique features of GNU
regex is yet to come.

1 files changed, 13 insertions, 2 deletions

diff --git a/Makefile b/Makefile
index 9c017c3..e8380b5 100755
--- a/Makefile
+++ b/Makefile
@@ -2,8 +2,9 @@
 
 # See src/*.mak for user-definable settings
 
-POSIX = src/posix
+GNU = src/gnu
 PCRE = src/pcre
+POSIX = src/posix
 ONIG = src/oniguruma
 
 all: build test
@@ -14,6 +15,9 @@ test: test_pcre test_posix test_onig
 
 clean: clean_pcre clean_posix clean_onig
 
+build_gnu:
+	make -C $(GNU) -f rex_gnu.mak
+
 build_pcre:
 	make -C $(PCRE) -f rex_pcre.mak
 
@@ -23,6 +27,9 @@ build_posix:
 build_onig:
 	make -C $(ONIG) -f rex_onig.mak
 
+test_gnu:
+	cd test && lua ./runtest.lua -d../$(PCRE) gnu
+
 test_pcre:
 	cd test && lua ./runtest.lua -d../$(PCRE) pcre
 
@@ -32,6 +39,9 @@ test_posix:
 test_onig:
 	cd test && lua ./runtest.lua -d../$(ONIG) onig
 
+clean_gnu:
+	make -C $(PCRE) -f rex_gnu.mak clean
+
 clean_pcre:
 	make -C $(PCRE) -f rex_pcre.mak clean
 
@@ -41,5 +51,6 @@ clean_posix:
 clean_onig:
 	make -C $(ONIG) -f rex_onig.mak clean
 
-.PHONY: all build test clean build_pcre test_pcre clean_pcre build_posix \
+.PHONY: all build test clean build_gnu test_gnu clean_gnu \
+  build_pcre test_pcre clean_pcre build_posix \
   test_posix clean_posix build_onig test_onig clean_onig