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https://issues.apache.org/jira/browse/FREEMARKER-208?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17568888#comment-17568888
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Florian Motteau commented on FREEMARKER-208:
--------------------------------------------
Thank you for the feedback. I totally agree on the fact that formatting things
for humans or machines should be an explicit choice (and on the Locale.ROOT).
Hopefully I will have some time to work on the solution you described.
> Allow to provide a specific locale for lower_case / upper_case
> --------------------------------------------------------------
>
> Key: FREEMARKER-208
> URL: https://issues.apache.org/jira/browse/FREEMARKER-208
> Project: Apache Freemarker
> Issue Type: Improvement
> Reporter: Florian Motteau
> Priority: Minor
>
> lower_case and upper_case filters rely on toLowerCase / toUpperCase methods.
> They use the current environment locale as first and only parameter for these
> methods.
> [https://github.com/apache/freemarker/blob/201533eb7c15e3cfc55b38da37f730a3492bec0f/src/main/java/freemarker/core/BuiltInsForStringsBasic.java#L433]
> In rare cases, we might want to provide a specific/fixed locale, to avoid
> some weird problems, such as the Turkish/Azeri dotless i problem :
> {code:java}
> // lowercasing an uppercase i, using turkish locale
> System.out.println("I".toLowerCase(new Locale("tr", "TR")));{code}
> ...will output "ı" (which is a dotless "i").
> We faced this problem in OFBiz
> (https://issues.apache.org/jira/browse/OFBIZ-12660), and although we can fix
> this for our specific use case, it may be a good idea to be able to pass a
> locale (which sould defaults to the environment locale if not provided) as
> parameter for lower_case and upper_case :
> {code:java}
> myVar?lower_case("en", "EN") {code}
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