Rearranged the code a bit, breaking walk.cc into several different files:

  compare         compare_items<T>
  handler         item_handler<T>
  iterators       used to iterators sets of journal objects
  filters         derived from item_handler, they morph the result set
  output          derived from item_handler, these do the printing

Also, created a new 'help' files which contains just Ledger's help text.

1 files changed, 2 insertions, 2 deletions

diff --git a/derive.cc b/derive.cc
index f3a2f3e7..dd9dc4ca 100644
--- a/derive.cc
+++ b/derive.cc
@@ -31,7 +31,7 @@
 
 #include "derive.h"
 #include "session.h"
-#include "walk.h"
+#include "iterators.h"
 
 namespace ledger {
 
@@ -96,7 +96,7 @@ entry_t * derive_new_entry(report_t& report,
 
 	report.sum_all_accounts();
 
-	value_t total = account_xdata(*acct).total;
+	value_t total = acct->xdata().total;
 	if (total.is_type(value_t::AMOUNT))
 	  xact->amount.set_commodity(total.as_amount().commodity());
       }