Folks, I don't recall if I picked these changes up from this list or if I muddled through it myself at one point, but since I just had to restore a backup from the ledger.el provided by the github repo for ledger I thought I'd post this:
http://highwire.stanford.edu/~jimr/misc/ledger.el.diff it's a small set of changes to the ledger.el that supports clearing transactions that use the YYYY-MM-DD format, and which make some adjustments to tab vs. spaces in the pattern matching used in the lisp code. I think I submitted a bug report for this last one, but can't find it in the bugzilla db right now. Jim
