Thanks for taking the time to report this!

This seems to be about WikiEditor, hence setting that project.

In T108626#1527027, @Aklapper wrote:

Thanks for taking the time to report this!

This seems to be about WikiEditor, hence setting that project.

Ah thanks... I had never noticed it was on all wikis... I usually take VisualEditor on Wikipedia, hence had never seen the special character on the code editor! :)

Should be possible for an on-wiki admin to set up in a gadget, e.g. this adds 'a' to the 'latin' special characters page:
$( '#wpTextbox1' ).wikiEditor( 'addToToolbar', { section: 'characters', characters: [ 'a' ], page: 'latin' } );

Although I wonder if we should just add these into resources/src/mediawiki.language/specialcharacters.json in MediaWiki core, that way WikiEditor will pull them in by default.

@Krenair: I don't think it's possible to add an entirely new codepoint page in a reasonable way through a gadget though - the Canadian syllabics are a distinct script entirely with several dozen codepoints.

In T108626#1540824, @coren wrote:

@Krenair: I don't think it's possible to add an entirely new codepoint page in a reasonable way through a gadget though - the Canadian syllabics are a distinct script entirely with several dozen codepoints.

Good point, that's my understanding too. Hopefully the i18n people will be able to find all the relevant characters to add to the file in core.

Ah. And then we'll need to add the section to WikiEditor...

For reference:
http://www.unicode.org/charts/PDF/U1400.pdf

Change 346062 had a related patch set uploaded (by Tpt):
[mediawiki/core@master] Adds canadian aboriginal to mw.language.specialcharacters

https://gerrit.wikimedia.org/r/346062

Change 346509 had a related patch set uploaded (by Amire80):
[mediawiki/extensions/WikiEditor@master] Add Canadian Aboriginal characters to the special characters toolbar

https://gerrit.wikimedia.org/r/346509

Change 346062 merged by jenkins-bot:
[mediawiki/core@master] mw.language.specialcharacters: Add Canadian Aboriginal group

https://gerrit.wikimedia.org/r/346062

Change 346509 merged by jenkins-bot:
[mediawiki/extensions/WikiEditor@master] Add Canadian Aboriginal characters to the special characters toolbar

https://gerrit.wikimedia.org/r/346509