Hi, I have converted mmj2 to a maven project (see 
https://github.com/jvierling/mmj2) and included the `nashorn-core` 
dependency. The mmj2 executable JAR file can be generated with the command 
`mvn package`.
Jannik.

[email protected] schrieb am Freitag, 3. März 2023 um 20:23:58 UTC+1:

>
> If this is likely to be an issue going forward would it be a good idea to 
> mavenize/gradleize the mmj2 build process so that the standalone version of 
> nashorn-core (
> https://mvnrepository.com/artifact/org.openjdk.nashorn/nashorn-core) gets 
> auto-downloaded and incorporated into the Jar file? It would increase the 
> size of the jar somewhat but would at least ensure that the program isn't 
> dependent on an antique version of Java? Although jdk8 is still technically 
> under LTS it's no longer recommended for production use and anything modern 
> should really be targeting jdk11+, if not jdk17.
>
> I'm a Java guy and have some time off work coming up later this month, if 
> Mel and Mario are okay with it I'd at least be willing to spend a day 
> looking at the repo to see how much work it would be likely to be. 
>
> DC
> On Thursday, 2 March 2023 at 22:38:49 UTC David A. Wheeler wrote:
>
>>
>>
>> > On Mar 2, 2023, at 4:36 PM, Mario Carneiro <[email protected]> wrote: 
>> > 
>> > It sounds like the nashorn JS engine was removed from a later version 
>> of JDK, and the empty list following the prompt suggests there is no 
>> replacement. Without it you won't be able to run any macros, although you 
>> might be able to install it manually? The easiest thing to do is probably 
>> just to downgrade to JDK 9. 
>>
>> Ah, of course! I should have noticed the openjdk version more carefully. 
>>
>> Oracle has long warned that they'd stop supporting JavaScript from Java 
>> using the Nashorn JS engine, but mmj2 depends on it. 
>>
>> --- David A. Wheeler 
>>
>>
>> > 
>> > On Thu, Mar 2, 2023 at 3:53 PM David A. Wheeler <[email protected]> 
>> wrote: 
>> > 
>> > 
>> > > On Mar 2, 2023, at 3:23 AM, William Mitchell Jr <[email protected]> 
>> wrote: 
>> > > 
>> > > running mmj2 in the mmj2jar directory produced this error: 
>> > > 
>> > > mmj.pa.MMJException: E-UT-1502 You attempted to use a macro, but the 
>> default Macro language 'js' does not exist. Use 'MacroLanguage,xxx' with 
>> one of the following installed languages: 
>> > > 
>> > > This is the git version (uncompiled) running on 
>> > > arm64 
>> > > Debian Linux 
>> > > openjdk-18 
>> > 
>> > Weird. I have no idea what's going on. Anyone else? 
>> > 
>> > --- David A. Wheeler 
>> > 
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