Bug 123948

I will take this issue as a request to add the necessary entries to the
language list box, IDs and ISO code mappings.

Adding a language to the language list box makes it available for
character attribution and spell-checking. Availability of spell checker,
hyphenation and thesaurus of course depends on the installed
dictionaries. To be able to fully support it as a locale, including
number formats and calendar data, and having it selectable as default
document language we would need a locale data file.

For how to contribute locale data please see
https://wiki.documentfoundation.org/LibreOffice_Localization_Guide/How_To_Submit_New_Locale_Data

Eike Rathke committed a patch related to this issue.
It has been pushed to "master":

https://git.libreoffice.org/core/+/90b17ec7ab218f1ba9ec789bad0c2a40644ad937%5E%21

Resolves: tdf#123948 add English (Zambia) [en-ZM] to language list

It will be available in 6.3.0.

The patch should be included in the daily builds available at
https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More
information about daily builds can be found at:
https://wiki.documentfoundation.org/Testing_Daily_Builds

Affected users are encouraged to test the fix and report feedback.

Eike Rathke committed a patch related to this issue.
It has been pushed to "master":

https://git.libreoffice.org/core/+/99f71a3f4a0207db0c18df1737cdb7b00e456b7e%5E%21

Related: tdf#123948 add English (Zambia) [en-ZM] locale data

It will be available in 6.3.0.

The patch should be included in the daily builds available at
https://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More
information about daily builds can be found at:
https://wiki.documentfoundation.org/Testing_Daily_Builds

Affected users are encouraged to test the fix and report feedback.