compressedfilemaxkbs had no default in the sample conf which created some weirdness in the index config GUI (but no actual problem). Add default in sample conf + a way to set a default value in the c++ code

src/qtgui/confgui/confgui.cpp

@@ -112,8 +112,9 @@ ConfParamIntW::ConfParamIntW(QWidget *parent, ConfLink cflink,
 			     const QString& lbltxt,
 			     const QString& tltptxt,
 			     int minvalue, 
-			     int maxvalue)
-    : ConfParamW(parent, cflink)
+			     int maxvalue,
+                             int defaultvalue)
+    : ConfParamW(parent, cflink), m_defaultvalue(defaultvalue)
 {
     if (!createCommon(lbltxt, tltptxt))
 	return;
@@ -144,8 +145,10 @@ ConfParamIntW::ConfParamIntW(QWidget *parent, ConfLink cflink,
 void ConfParamIntW::loadValue()
 {
     string s;
-    m_cflink->get(s);
-    m_sb->setValue(atoi(s.c_str()));
+    if (m_cflink->get(s)) 
+        m_sb->setValue(atoi(s.c_str()));
+    else
+        m_sb->setValue(m_defaultvalue);
 }
 
 ConfParamStrW::ConfParamStrW(QWidget *parent, ConfLink cflink, 

src/qtgui/confgui/confgui.h

@@ -104,16 +104,20 @@ namespace confgui {
     class ConfParamIntW : public ConfParamW {
 	Q_OBJECT
     public:
+        // The default value is only used if none exists in the sample
+        // configuration file. Defaults are normally set in there.
 	ConfParamIntW(QWidget *parent, ConfLink cflink, 
 		      const QString& lbltxt,
 		      const QString& tltptxt,
 		      int minvalue = INT_MIN, 
-		      int maxvalue = INT_MAX);
+		      int maxvalue = INT_MAX,
+                      int defaultvalue = 0);
 	virtual void loadValue();
     public slots:
         virtual void setEnabled(bool i) {if(m_sb) ((QWidget*)m_sb)->setEnabled(i);}
     protected:
 	QSpinBox *m_sb;
+        int       m_defaultvalue;
     };
 
     // Arbitrary string

src/qtgui/confgui/confguiindex.cpp

@@ -439,7 +439,7 @@ ConfSubPanelW::ConfSubPanelW(QWidget *parent, ConfNull *config)
 		      tr("This value sets a threshold beyond which compressed"
 			 "files will not be processed. Set to -1 for no "
 			 "limit, to 0 for no decompression ever."),
-		      -1, 1000000);
+		      -1, 1000000, -1);
     m_widgets.push_back(ezfmaxkbs);
 
     ConfLink lnktxtmaxmbs(new ConfLinkRclRep(config, "textfilemaxmbs"));

src/sampleconf/recoll.conf.in

@@ -106,7 +106,7 @@ indexallfilenames = 1
 # temporary directory for identification, which can be wasteful in some
 # cases. Limit the waste. Negative means no limit. 0 results in no
 # processing of any compressed file
-# compressedfilemaxkbs = -1
+compressedfilemaxkbs = -1
 
 # Size limit for text files. This is for skipping monster logs
 textfilemaxmbs = 20