I just released a free, open source plugin for Glyphs called Filter List Manager. It assists with the creation and management of glyph filter lists by specifying a newline-delimited text definition file that can be stored locally or remotely and used through the plugin to define the filters that are listed in your Glyphs GUI. The definition files are stored in a new directory on your macOS system (~/GlyphsFilters). My hope is that this will simplify conversion between different filters for any project-specific needs that exist out there and provide an avenue for sharing filter lists between design teams (e.g., push a definition file that you create to a Github repository and make it available to others who could benefit from it, they enter the URL to it and can immediately use it in their editor). The definition files support comment lines for licensing and commentary needs. The repository README has full details on how to create definition files and use the three new Edit menu items that are installed with the plugin.
I hope that it is helpful to development workflows out there and look forward to any feedback that you have. If you give the approach a try and run into any problems or have suggestions for changes, please file an issue report on the repository so that we can address them! Our projects are always open to collaboration. If you would like to dive in and commit source changes to make the project better, please fork the Github repository and file a pull request. Let me know if the pull request process poses a barrier to contributions because we can easily work around that issue so that we can include your contributions. Enjoy!
Apache License 2.0