New to Geany hacking (I fully understand that Geany is an unpaid volunteer project), but I'm also interested in Julia support. Based on a comment by @elextr in #2279, to add Julia support to Geany, there are 3 steps to follow (create a custom filetype file, add a Scintilla lexer and add a uctags parser), but some initial functionality may be already achieved by creating a custom filetype file that relies on existing Scintilla lexer and uctags parser. If that's the case, besides being over 5 years old, what are the issues with the custom filetype proposed above by @peter1000? Generally, what's needed to make a good Julia filetype file?

Moreover, I started looking at the [Geany manual](https://www.geany.org/manual/dev/index.html#filetype-definition-files), the [Hacking Geany guide](https://geany.org/manual/hacking.html#adding-a-filetype) and the [Scintilla lexer reference](https://www.scintilla.org/Lexer.txt) and I was wondering whether one should first create a lexer and a parser and then work at the filetype file. Finally, is there some example to look at to create a working and exhaustive lexer and parser for Julia? The Scintilla lexer documentation is a bit intimidating...