Hi Daniel,

Thank you, very informative.

I guess we will take this back to our ML in ofbiz, but I imagine as a
general rule that we should keep our trunk (master branch) always
compatible with the latest FreeMarker requirements. We rarely hit problems
in upgrade anyway, that's why I thought we should go for the latest by
default.

I will think about your recommendations some more though. Thank you.

On Sun, Apr 1, 2018, 10:57 AM Daniel Dekany <ddek...@apache.org> wrote:

> Sunday, April 1, 2018, 8:00:52 AM, Taher Alkhateeb wrote:
>
> > We are using a lot of libraries in OFBiz, yet freemarker is the only one
> > where we have to first bump up the dependency version + update the java
> > integration work.
>
> You don't *have* to improve the incompatibleImprovemetns after an
> upgrade. In principle you only do that after you have reviewed that
> the changes affect you, otherwise you stick to the
> incompatibleImprovemetns that was used when your project was started.
>
> You don't do it with other libraries because they have no similar
> capability. They either behave as if you always just use `new
> Configuration()` (which is the same as `new
> Configuration(VERSION_2_3_0)`), or they don't care about backward
> compatibility that much.
>
> See also:
>
> https://freemarker.apache.org/docs/pgui_config_incompatible_improvements.html
>
> > Can't we have a constructor argument in freemarker.template.Configuration
> > like say VERSION_LATEST instead of hard-coding the compatibility version?
>
> There's a static Configuration.getVersion() method which returns the
> current version, but please don't use it as incompatibleImprovements.
> Certainly doing that will throw IllegalArgumentException if there will
> be a 2.4.0.
>
> > We always want to update our code to be compatible with the latest
> version
> > of FreeMarker.
> >
> > I'm not aware of the history, is there a reason why Configuration() is
> > deprecated?
>
> Because it's harmful for new projects to stick to 100% 2.3.0
> compatibility. If it wasn't deprecated, most project would just use
> that, without realizing what it means.
>
> > On Sun, Apr 1, 2018, 8:38 AM Jacopo Cappellato <
> jacopo.cappell...@gmail.com>
> > wrote:
> >
> >> On Sat, Mar 31, 2018 at 11:06 PM, Jacques Le Roux <
> >> jacques.le.r...@les7arts.com> wrote:
> >>
> >> > Thanks Jacopo,
> >> >
> >> > Yes, that's what I have used.
> >>
> >>
> >> No, your patch is different from mine and this is why it is not able to
> >> fetch the files from the staging Maven repository. Please check the
> >> differences of the line numbers of the first chunks of the patches.
> >>
> >> Jacopo
> >>
>
> --
> Thanks,
>  Daniel Dekany
>
>

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