feature: implemented the "J" regex option for the PCRE Javascript compatible mode in the ngx.re API. thanks lhmwzy for requesting this.

README

@@ -3573,6 +3573,9 @@ Nginx API for Lua
                       this option should always be used together with the 'o' option.
                       first introduced in ngx_lua v0.3.1rc30.
 
+        J             enable the PCRE Javascript compatible mode. this option was
+                      first introduced in the v0.7.14 release.
+
         m             multi-line mode (similar to Perl's /m modifier)
 
         o             compile-once mode (similar to Perl's /o modifier),

README.markdown

@@ -3293,6 +3293,9 @@ Specify `options` to control how the match operation will be performed. The foll
                   this option should always be used together with the 'o' option.
                   first introduced in ngx_lua v0.3.1rc30.
 
+    J             enable the PCRE Javascript compatible mode. this option was
+                  first introduced in the v0.7.14 release.
+
     m             multi-line mode (similar to Perl's /m modifier)
 
     o             compile-once mode (similar to Perl's /o modifier),

doc/HttpLuaModule.wiki

@@ -3179,6 +3179,9 @@ Specify <code>options</code> to control how the match operation will be performe
                   this option should always be used together with the 'o' option.
                   first introduced in ngx_lua v0.3.1rc30.
 
+    J             enable the PCRE Javascript compatible mode. this option was
+                  first introduced in the v0.7.14 release.
+
     m             multi-line mode (similar to Perl's /m modifier)
 
     o             compile-once mode (similar to Perl's /o modifier),

src/ngx_http_lua_regex.c

@@ -1102,6 +1102,10 @@ ngx_http_lua_ngx_re_parse_opts(lua_State *L, ngx_lua_regex_compile_t *re,
                 flags |= NGX_LUA_RE_MODE_DUPNAMES;
                 break;
 
+            case 'J':
+                re->options |= PCRE_JAVASCRIPT_COMPAT;
+                break;
+
             default:
                 msg = lua_pushfstring(L, "unknown flag \"%c\"", *p);
                 return luaL_argerror(L, narg, msg);

t/034-match.t

@@ -9,7 +9,7 @@ use Test::Nginx::Socket;
 
 repeat_each(2);
 
-plan tests => repeat_each() * (blocks() * 2 + 6);
+plan tests => repeat_each() * (blocks() * 2 + 7);
 
 #no_diff();
 no_long_string();
@@ -857,3 +857,24 @@ hello-world
 --- no_error_log
 [error]
 
+
+
+=== TEST 40: Javascript compatible mode
+--- config
+    location /t {
+        content_by_lua '
+            local m = ngx.re.match("章", [[\\u7AE0]], "uJ")
+            if m then
+                ngx.say("matched: ", m[0])
+            else
+                ngx.say("not matched!")
+            end
+        ';
+    }
+--- request
+GET /t
+--- response_body
+matched: 章
+--- no_error_log
+[error]
+