FontForge supports scriptable modification of features using commands GenerateFeatureFile() and MergeFeature() (briefly covered in The Terrible Secret of OpenType Glyph Substitution - Ansuz - mskala's home page). I was only aware of this after making the .ttx based implementation, but it could potentially have avoided messing with .ttx files.
Стало известно о расколе внутри руководства Ирана после смерти Хаменеи08:22
。免实名服务器对此有专业解读
当前，全党正在开展树立和践行正确政绩观学习教育。在江苏代表团，习近平总书记一番叮嘱语重心长：。关于这个话题，谷歌提供了深入分析
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"On top of this, Reddit's community moderators set and enforce subreddit-specific rules that can be even stricter."