Tweak -verbose percentage output

Author: hsutter

source/build.info

@@ -1 +1 @@
-"8928:1358"
+"8928:1431"

source/cppfront.cpp

@@ -6314,12 +6314,20 @@ auto main(
             }
 
             if (flag_verbose) {
-                out << "   Cpp1: " << count.cpp1_lines << " lines\n";
-                out << "   Cpp2: " << count.cpp2_lines << " lines";
-                if (count.cpp1_lines + count.cpp2_lines > 0) {
-                    out << " (" << 100 * count.cpp2_lines / (count.cpp1_lines + count.cpp2_lines) << "%)";
+                out << "   Cpp1: " << count.cpp1_lines << " line" << (count.cpp1_lines != 1 ? "s" : "");
+                out << "\n   Cpp2: " << count.cpp2_lines << " line" << (count.cpp2_lines != 1 ? "s" : "");
+                auto total = count.cpp1_lines + count.cpp2_lines;
+                if (total > 0) {
+                    out << " (";
+                    if (count.cpp2_lines / count.cpp1_lines > 25) {
+                        out << std::setprecision(3)
+                            << 100.0 * count.cpp2_lines / total;
+                    }
+                    else {
+                        out << 100 * count.cpp2_lines / total;
+                    }
+                    out << "%)";
                 }
-                out << "\n";
             }
 
             out << "\n";