fix(treesitter): don't add final newline if not present #35970

**Problem(?):** Buffers that (for whatever reason) aren't meant to have
a final newline are still parsed with a final newline in `treesitter.c`.

**Solution:** Don't add the newline to the last buffer line if it
shouldn't be there. (This more closely matches the approach of
`read_buffer_into()`.)

This allows us to, say, use a scratch buffer with `noeol` and `nofixeol`
behind the scenes in `get_string_parser()`.

...which would allow us to track injection trees with extmarks in that
case.

...which would allow us to not drop previous trees after reparsing a
different range with `get_parser():parse()`.

...which would prevent flickering when editing a buffer that has 2+
windows to it in view at a time.

...which would allow us to keep our sanity!!!

(one step at a time...)

0 files changed, 0 insertions, 0 deletions