Allow input -> mouse-zoom-divider to be 0

CHANGELOG.asciidoc

@@ -44,6 +44,7 @@ Changed
 - Zoom level messages are now not stacked on top of each other anymore.
 - qutebrowser now automatically uses QtWebEngine if QtWebKit is unavailable
 - :history-clear now asks for a confirmation, unless it's run with --force.
+- `input -> mouse-zoom-divider` can now be 0 to disable zooming by mouse wheel
 
 Fixed
 -----

qutebrowser/browser/mouse.py

@@ -120,6 +120,8 @@ class MouseEventFilter(QObject):
 
         if e.modifiers() & Qt.ControlModifier:
             divider = config.get('input', 'mouse-zoom-divider')
+            if divider == 0:
+                return False
             factor = self._tab.zoom.factor() + (e.angleDelta().y() / divider)
             if factor < 0:
                 return False

qutebrowser/config/configdata.py

@@ -589,7 +589,7 @@ def data(readonly=False):
              "disables the context menu."),
 
             ('mouse-zoom-divider',
-             SettingValue(typ.Int(minval=1), '512'),
+             SettingValue(typ.Int(minval=0), '512'),
              "How much to divide the mouse wheel movements to translate them "
              "into zoom increments."),