Merge branch 'lessrelnotes' into dev

rtgui/rtwindow.cc

@@ -18,6 +18,7 @@
  */
 
 #include <gtkmm.h>
+#include <regex>
 #include "rtwindow.h"
 #include "options.h"
 #include "preferences.h"
@@ -319,8 +320,23 @@ void RTWindow::on_realize ()
 
     mainWindowCursorManager.init(get_window());
 
-    // Check if first run of this version, then display the Release Notes text
+    // Display release notes only if new major version.
-    if (options.version != versionString) {
+    // Pattern matches "5.1" from "5.1-23-g12345678"
+    std::string vs[] = {versionString, options.version};
+    std::regex pat("(^[0-9.]+).*");
+    std::smatch sm;
+    std::vector<std::string> vMajor;
+    for (const auto &v : vs) {
+        if (std::regex_match(v, sm, pat)) {
+            if (sm.size() == 2) {
+                std::ssub_match smsub = sm[1];
+                vMajor.push_back(smsub.str());
+            }
+        }
+    }
+
+    if (vMajor.size() == 2) {
+        if (vMajor[0] != vMajor[1]) {
 
             // Update the version parameter with the right value
             options.version = versionString;
@@ -338,6 +354,7 @@ void RTWindow::on_realize ()
             }
         }
     }
+}
 
 bool RTWindow::on_window_state_event(GdkEventWindowState* event)
 {