ui: use ngettext for translatable strings with number dependencies

lib/solaar/listener.py

@@ -186,7 +186,7 @@ class ReceiverListener(_listener.EventsListener):
         # a device notification
         if not (0 < n.devnumber <= self.receiver.max_devices):
             if _log.isEnabledFor(_WARNING):
-                _log.warning(_('Unexpected device number (%s) in notification %s.' % (n.devnumber, n)))
+                _log.warning('Unexpected device number (%s) in notification %s.', n.devnumber, n)
             return
         already_known = n.devnumber in self.receiver
 

lib/solaar/ui/pair_window.py

@@ -24,7 +24,7 @@ from logging import getLogger
 
 from gi.repository import GLib, Gtk
 from logitech_receiver.status import KEYS as _K
-from solaar.i18n import _
+from solaar.i18n import _, ngettext
 
 from . import icons as _icons
 
@@ -137,7 +137,7 @@ def _pairing_failed(assistant, receiver, error):
     elif str(error) == 'device not supported':
         text = _('A new device was detected, but it is not compatible with this receiver.')
     elif 'many' in str(error):
-        text = _('The receiver only supports %d paired device(s).')
+        text = _('More paired devices than receiver can support.')
     else:
         text = _('No further details are available about the error.')
     _create_page(assistant, Gtk.AssistantPageType.SUMMARY, header, 'dialog-error', text)
@@ -205,7 +205,10 @@ def create(receiver):
 
     page_text = _('If the device is already turned on, turn if off and on again.')
     if receiver.remaining_pairings() and receiver.remaining_pairings() >= 0:
-        page_text += _('\n\nThis receiver has %d pairing(s) remaining.') % receiver.remaining_pairings()
+        page_text += ngettext(
+            '\n\nThis receiver has %d pairing remaining.', '\n\nThis receiver has %d pairings remaining.',
+            receiver.remaining_pairings()
+        ) % receiver.remaining_pairings()
         page_text += _('\nCancelling at this point will not use up a pairing.')
 
     page_intro = _create_page(

lib/solaar/ui/window.py

@@ -610,7 +610,10 @@ def _update_receiver_panel(receiver, panel, buttons, full=False):
         paired_text += '\n\n<small>%s</small>' % _('Only one device can be paired to this receiver.')
     pairings = receiver.remaining_pairings(False)
     if (pairings is not None and pairings >= 0):
-        paired_text += '\n<small>%s</small>' % _('This receiver has %d pairing(s) remaining.') % pairings
+        paired_text += '\n<small>%s</small>' % (
+            ngettext('This receiver has %d pairing remaining.', 'This receiver has %d pairings remaining.', pairings) %
+            pairings
+        )
 
     panel._count.set_markup(paired_text)