feat(gui): Indicate unstabel dev version in main window title

common/version.py

@@ -15,11 +15,10 @@
 # Version string regularyly used by the application and presented to users.
 __version__ = '1.6.0-dev.0927479b'
 
+# Version string ends with lower case ``rc`` and optionally with a number.
+# e.g. "1.6.0rc", "1.6.0-rc", "1.6.0-rc2"
+IS_RELEASE_CANDIDATE = bool(re.search(r'^.+rc\d*$', __version__))
 
-def is_release_candidate() -> bool:
-    """Test if the current version is a release candidate.
-
-    It is the case if the version string ends with lower case ``rc`` and
-    optionally with a number.
-    """
-    return bool(re.search(r'^.+rc\d+$', __version__))
+# Third version element (patch number) followed by anything than a number
+# e.g. "1.6.0x", "1.6.0-dev", "1.6.0.1"
+IS_UNSTABLE_DEV_VERSION = bool(re.match(r'^\d+\.\d+\.\d+\D', __version__))

doc/manpages/backintime.1.adoc

@@ -260,7 +260,7 @@ $XDG_CONFIG_HOME is ~/.config).
 
 *--license* :: Show license
 
-*--diagnostics* :: Show diagnistic information to support debugging.
+*--diagnostics* :: Show diagnostic information to support debugging.
 
 *--local-backup* :: Create backup files before changing local files. Only valid
    with _restore_.

qt/app.py

@@ -322,7 +322,7 @@ def __init__(self, config, appInstance, qapp):
                 self.filesView.header().resizeSection(idx, width)
 
         # Release Candidate
-        if version.is_release_candidate():
+        if version.IS_RELEASE_CANDIDATE:
             last_vers = state_data.msg_release_candidate
             if last_vers != version.__version__:
                 state_data.msg_release_candidate = version.__version__
@@ -635,7 +635,7 @@ def _create_actions(self):
 
         # Release Candidate ?
         self.act_help_release_candidate = None
-        if version.is_release_candidate():
+        if version.IS_RELEASE_CANDIDATE:
             # pylint: disable=undefined-variable
             action = QAction(icon.QUESTION, _('Release Candidate'), self)
             action.triggered.connect(self.slot_help_release_candidate)
@@ -2495,7 +2495,7 @@ def load_state_data(cfg: config.Config) -> None:
     cfg.PLUGIN_MANAGER.appStart()
 
     logger.openlog()
-    qapp = qttools.createQApplication(cfg.APP_NAME)
+    qapp = qttools.createQApplication(bitbase.APP_NAME)
     translator = qttools.initiate_translator(cfg.language())
     qapp.installTranslator(translator)
 

qt/qttools.py

@@ -367,10 +367,14 @@ def createQApplication(app_name='Back In Time'):
             f"Error reading QT QPA platform plugin or style: {repr(e)}")
 
     # Release Candidate indicator
-    if version.is_release_candidate():
+    if version.IS_RELEASE_CANDIDATE:
         app_name = f'{app_name} -- RELEASE CANDIDATE -- ' \
                    f'({version.__version__})'
+    elif version.IS_UNSTABLE_DEV_VERSION:
+        app_name = f'{app_name} -- UNSTABLE DEVELOPMENT ' \
+                   f'VERSION -- ({version.__version__})'
 
+    # This will influence the main window title
     qapp.setApplicationName(app_name)
 
     try: