Added new "bold" modifier to query expressions

For example:

  ledger bal assets bold checking

Or you can use expressions:

  ledger bal assets bold '=total > 1000'

This last is identical to saying:

  ledger bal -l 'account =~ /assets/' --bold-if='total > 1000'

1 files changed, 12 insertions, 8 deletions

diff --git a/src/predicate.h b/src/predicate.h
index fc99c3c6..673f1d5d 100644
--- a/src/predicate.h
+++ b/src/predicate.h
@@ -48,8 +48,6 @@
 
 namespace ledger {
 
-class query_t;
-
 class predicate_t : public expr_t
 {
 public:
@@ -63,15 +61,21 @@ public:
     : expr_t(other), what_to_keep(other.what_to_keep) {
     TRACE_CTOR(predicate_t, "copy");
   }
-  predicate_t(const query_t& other);
-
-  predicate_t(const string& str, const keep_details_t& _what_to_keep,
-              const parse_flags_t& flags = PARSE_DEFAULT)
+  predicate_t(ptr_op_t              _ptr,
+              const keep_details_t& _what_to_keep,
+              scope_t *             _context = NULL)
+    : expr_t(_ptr, _context), what_to_keep(_what_to_keep) {
+    TRACE_CTOR(predicate_t, "ptr_op_t, keep_details_t, scope_t *");
+  }
+  predicate_t(const string&         str,
+              const keep_details_t& _what_to_keep,
+              const parse_flags_t&  flags = PARSE_DEFAULT)
     : expr_t(str, flags), what_to_keep(_what_to_keep) {
     TRACE_CTOR(predicate_t, "string, keep_details_t, parse_flags_t");
   }
-  predicate_t(std::istream& in, const keep_details_t& _what_to_keep,
-              const parse_flags_t& flags = PARSE_DEFAULT)
+  predicate_t(std::istream&         in,
+              const keep_details_t& _what_to_keep,
+              const parse_flags_t&  flags = PARSE_DEFAULT)
     : expr_t(in, flags), what_to_keep(_what_to_keep) {
     TRACE_CTOR(predicate_t, "std::istream&, keep_details_t, parse_flags_t");
   }