- Zero values no longer generate a 1-char bar in "task ghistory"

.gitignore

@@ -9,4 +9,5 @@ src/Makefile
 src/task
 stamp-h1
 Makefile
+configure
 config.log

src/color.cpp

@@ -242,6 +242,7 @@ std::string decode (color c)
 ////////////////////////////////////////////////////////////////////////////////
 std::string colorize (color fg, color bg, const std::string& input)
 {
+  if (input.length ())
     if (fg != nocolor || bg != nocolor)
       return decode (fg) + decode (bg) + input + decode (off);
 

src/task.cpp

@@ -1876,20 +1876,32 @@ void handleReportGHistory (const TDB& tdb, T& task, Config& conf)
       if (conf.get ("color", true))
       {
         char number[24];
+        std::string aBar = "";
+        if (addedGroup[i->first])
+        {
           sprintf (number, "%d", addedGroup[i->first]);
-        std::string aBar = number;
+          aBar = number;
           while (aBar.length () < addedBar)
             aBar = " " + aBar;
+        }
 
+        std::string cBar = "";
+        if (completedGroup[i->first])
+        {
           sprintf (number, "%d", completedGroup[i->first]);
-        std::string cBar = number;
+          cBar = number;
           while (cBar.length () < completedBar)
             cBar = " " + cBar;
+        }
 
+        std::string dBar = "";
+        if (deletedGroup[i->first])
+        {
           sprintf (number, "%d", deletedGroup[i->first]);
-        std::string dBar = number;
+          dBar = number;
           while (dBar.length () < deletedBar)
             dBar = " " + dBar;
+        }
 
         bar  = Text::colorize (Text::black, Text::on_green,  aBar);
         bar += Text::colorize (Text::black, Text::on_yellow, cBar);