More syntax highlighting fun:
The atom plugin is basically fully functional and you can test it here: atomic-blonde
atomic-blonde seems to be a bit slower than the language-swift89 grammar. The SourceKit highlighter has a latency of about 11ms per keypress. The old regex one by comparison takes just 3ms.
Here’s a time graph of the SourceKit highlighter (each lobe containing a green rectangle represents one highlighter cycle, 3 cycles are shown):
(Un)surprisingly, over 90% of the extra time is spent in javascript, mostly in calls to clearing and constructing marker layers in the Atom interface. The actual call to blonde, the C++ module that calls SourceKit and does additional processing, takes less than a millisecond. (It’s the tiny yellow rectangle at the bottom outlined in blue.)