Handle more escape sequences in newer vim
Handle more escape sequences in newer vim

vim digraphs parsing stumbled on newer output from vim, with what look
like movement controls (I didn't bother digging deeply, I just decided
to strip).

This change gets the count back up to where it should be; I temporarily
uncommented the diagnostic logging lines for testing.  Diagnostic lines
with livevim loading; before:

    scanning digraph data: 1237 digraphs, 0 broken
    scanning digraph data: 827 digraphs, 0 broken

after:

    scanning digraph data: 1237 digraphs, 0 broken
    scanning digraph data: 1249 digraphs, 0 broken

Also bumped the approx count 1000 → 1500.

philpennock/character,philpennock/character,philpennock/character