Ciao Stefan
Right. Hashtag2tag won't auto-remove the TW tags when you remove the in-text #hashtag. It should be possible to expand the approach to do that, though personally I don't have the skill to know quite how.
FWIW there was some improvement in the approach that emerged from a discussion between myself & Mark S. Mark, basically solved most of the issues with Riz's version I had. It deals with issues of (1) consistent case of created tags; (2) limiting the action of the macro to specific Tiddler types (to prevent creation of TW tags where "#" is found in some Content Types where they have NON-hashtag meanings); (3) removing extraneous characters that #hashtag systems ignore (like apostrophes) but which TW treats as part of the tag unless you clip them off.
Thread:
Twitter #hashtags to TiddlyWiki Tags -- HOW, safelyI can't give you a finished product for what you need BUT you may find reading this thread, and especially Mark S.' code helpful. I've been using the approach he helped me with successfully for several months now.
Best wishes
Josiah