Associate File Extensions with (Editor) SyntaxHighlighters

[ahrbe1]

I've been writing an EditorSyntaxHighlighter in GDScript. Two issues have occurred to me during this process that I'd like to discuss:

1. Godot doesn't seem to have a way to associate a file extension with a syntax highlighter. It appears the only way to use my new highlighter is to manually select Edit -> Syntax Highlighter -> My Syntax Highlighter after opening a file. It would also be useful to have registered file extensions appear in the File -> Open... -> Recognized File Types dropdown and then auto-apply my highlighter when a file with a registered extension is opened.

2. In lieu of that, there appears to be no way to hook the EditorInterface when a new text file is opened (The thought being to check the file extension and then add the highlighter to the active editor). There is the ScriptEditor.editor_script_changed signal, but this only works for scripts and not for other non-script file types. For non-script file types, the Script argument is passed as null.

I did find EditorSyntaxHighlighter._get_supported_languages but it's not clear to me what string to return here. So that might be an area for documentation improvement.

[Calinou]

Pull request opened:

• Clarify expected return values for EditorSyntaxHighlighter's virtual methods godot#99495