Turn synonyms expansion off if the search is sensitive to either case or diacritics. + misc trace improvements

.hgignore

@@ -66,6 +66,7 @@ src/filters/rclexecm.pyc
 src/filters/rcllatinclass.pyc
 src/recollindex
 src/recollq
+src/xadump
 src/kde/kioslave/kio_recoll/builddir
 src/python/recoll/build
 src/python/recoll/recoll/__init__.pyc

src/rcldb/expansiondbs.h

@@ -43,6 +43,14 @@ public:
     : m_op(op)
     {
     }
+    virtual std::string name() {
+        std::string nm("Unac: ");
+        if (m_op & UNACOP_UNAC)
+            nm  += "UNAC ";
+        if (m_op & UNACOP_FOLD)
+            nm  += "FOLD ";
+        return nm;
+    }
     virtual std::string operator()(const std::string& in)
     {
 	string out;

src/rcldb/rclterms.cpp

@@ -258,6 +258,8 @@ bool Db::termMatch(int typ_sens, const string &lang, const string &_term,
 	}
 
 	if (matchtyp == ET_STEM || (typ_sens & ET_SYNEXP)) {
+            // Note: if any of the above conds is true, we are insensitive to
+            // diacs and case (enforced in searchdatatox:termexpand
 	    // Need stem expansion. Lowercase the result of accent and case
 	    // expansion for input to stemdb.
 	    for (unsigned int i = 0; i < lexp.size(); i++) {

src/rcldb/searchdatatox.cpp

@@ -464,8 +464,10 @@ bool SearchDataClauseSimple::expandTerm(Rcl::Db &db,
 
 	// If we are sensitive to case or diacritics turn stemming off
 	if (diac_sensitive || case_sensitive) {
-	    LOGDEB0(("expandTerm: diac or case sens set -> stemexpand off\n"));
+	    LOGDEB0(("expandTerm: diac or case sens set -> "
+                     "stemexpand and synonyms off\n"));
 	    nostemexp = true;
+            synonyms = false;
 	}
 
 	if (!case_sensitive || !diac_sensitive)

src/rcldb/synfamily.cpp

@@ -144,8 +144,11 @@ bool XapComputableSynFamMember::synExpand(const string& term,
 
     string key = m_prefix + root;
 
-    LOGDEB(("XapCompSynFamMbr::synExpand([%s]): term [%s] root [%s] \n", 
-	    m_prefix.c_str(), term.c_str(), root.c_str()));
+    LOGDEB(("XapCompSynFamMbr::synExpand([%s]): term [%s] root [%s] "
+            "m_trans: %s filter: %s\n", 
+            m_prefix.c_str(), term.c_str(), root.c_str(), 
+            m_trans->name().c_str(),
+            filtertrans ? filtertrans->name().c_str() : "none"));
 
     string ermsg;
     try {

src/rcldb/synfamily.h

@@ -118,6 +118,7 @@ protected:
 class SynTermTrans {
 public:
     virtual std::string operator()(const std::string&) = 0;
+    virtual std::string name() { return "SynTermTrans: unknown";}
 };
 
 /** A member (set of root-synonyms associations) of a SynFamily for