Recognize tags in note's text and make clickable

Good idea.

Some questions here.

1. Where should tags be clickable: in notes preview list or in note editing window? (or maybe both?)

2. How is "Rename tag" action handled?

3. What action is tag-link clicking equal to? Just clicking on the tag bar, ctrl+clicking, shift+clicking or alt+clicking?

4. What are semantics of tag-link clicking?

If it's "Show me all notes with this tag", this is actually a search query and can be generalized to "Show me all notes matching condition", where tag-links could be formulas with set operations:
"|" is union (or), "&" is intersection (and), "\" is complement (substraction)
for example [tag:(foo | bar) \ goo] would give same effect as if we shift+click "foo" and "bar" tags, and then alt+click "goo" tag.

Another option is making simple tag-links (no formulas), but let user click them with ctrl, shift or alt modifiers to change his search query.

This feature is related to:
http://roadmap.cintanotes.com/feedback/3390-make-tags-clickable/

1. Editing window. Clickable tags in note preview are in separate request.
2. Good question. I guess having some special syntax for tag references it should be easy to rename references automatically.
3. I think simple clicking. But in theory all the modifiers can be supported here, too.
4. IMO the second variant is more feasible.