String match does not support ([^05+]) form

[robertcsakany]

The following code throws an exceotion on strmatch

local function updatedecpoint ()
    decpoint = strmatch(tostring(0.5), "([^05+])")
    -- build a filter that can be used to remove group separators
    numfilter = "[^0-9%-%+eE" .. gsub(decpoint, "[%^%$%(%)%%%.%[%]%*%+%-%?]", "%%%0") .. "]+"
end

This code is working fine with luac and luaj. Its the dkjson luarocks library.

The exception is:

net.sandius.rembulan.exec.CallException: java.lang.IllegalArgumentException: error at character 6: unexpected character '+'

	at net.sandius.rembulan.exec.DirectCallExecutor$Result.get(DirectCallExecutor.java:184)
	at net.sandius.rembulan.exec.DirectCallExecutor.execute(DirectCallExecutor.java:310)
	at net.sandius.rembulan.exec.DirectCallExecutor.resume(DirectCallExecutor.java:252)
	at net.sandius.rembulan.exec.DirectCallExecutor.call(DirectCallExecutor.java:228)
	at hu.blackbelt.judo.scripting.lua.TestScriptRun.testRembulanScriptLoading(TestScriptRun.java:67)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at com.intellij.junit4.JUnit4TestRunnerUtil$IgnoreIgnoredTestJUnit4ClassRunner.runChild(JUnit4TestRunnerUtil.java:365)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:51)
	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:237)
	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
Caused by: java.lang.IllegalArgumentException: error at character 6: unexpected character '+'
	at net.sandius.rembulan.lib.StringPattern$PatternBuilder.parseError(StringPattern.java:941)
	at net.sandius.rembulan.lib.StringPattern$PatternBuilder.CC_lit(StringPattern.java:1087)
	at net.sandius.rembulan.lib.StringPattern$PatternBuilder.characterSetElement(StringPattern.java:1017)
	at net.sandius.rembulan.lib.StringPattern$PatternBuilder.characterSetBody(StringPattern.java:1025)
	at net.sandius.rembulan.lib.StringPattern$PatternBuilder.cclass(StringPattern.java:1133)
	at net.sandius.rembulan.lib.StringPattern$PatternBuilder.PI_cc(StringPattern.java:1163)
	at net.sandius.rembulan.lib.StringPattern$PatternBuilder.PI(StringPattern.java:1186)
	at net.sandius.rembulan.lib.StringPattern$PatternBuilder.PI_capture(StringPattern.java:1196)
	at net.sandius.rembulan.lib.StringPattern$PatternBuilder.PI(StringPattern.java:1170)
	at net.sandius.rembulan.lib.StringPattern$PatternBuilder.parse(StringPattern.java:1218)
	at net.sandius.rembulan.lib.StringPattern$PatternBuilder.access$900(StringPattern.java:913)
	at net.sandius.rembulan.lib.StringPattern.fromString(StringPattern.java:1228)
	at net.sandius.rembulan.lib.StringPattern.fromString(StringPattern.java:1232)
	at net.sandius.rembulan.lib.StringLib$Match.invoke(StringLib.java:1699)
	at net.sandius.rembulan.lib.AbstractLibFunction.invoke(AbstractLibFunction.java:39)
	at net.sandius.rembulan.runtime.AbstractFunctionAnyArg.invoke(AbstractFunctionAnyArg.java:36)
	at net.sandius.rembulan.runtime.Dispatch.mt_invoke(Dispatch.java:70)
	at net.sandius.rembulan.runtime.Dispatch.call(Dispatch.java:236)