Haaaa … what a pity, just found a problem with using this solution for my use case:
The style highlightnings are being stored/restored for each occurence. This means, newly appended log file lines won’t get the matching style highlightnings.
(I tested the AnalysePlugin also, but - as expected - it is too bulky, buggy and restricted to its own result window; there are good use cases for this solution for repeating scenarios with identical and complex patterns, but it won’t fit for dynamic quick’n’easy highlightnings of always-other-keywords)
Will go back to manually re-applying the 1-5 style tokens at each log file reload, until I find a better solution.
Thanks for all suggestions and ideas, this was really inspiring!