Shortcuts to move the active tab in the tab bar

README.asciidoc

@@ -9,8 +9,11 @@
 :sc_fifth_window: pass:quotes[`ctrl+shift+5`]
 :sc_first_window: pass:quotes[`ctrl+shift+1`]
 :sc_fourth_window: pass:quotes[`ctrl+shift+4`]
+:sc_move_tab_backward: pass:quotes[`ctrl+shift+,`]
+:sc_move_tab_forward: pass:quotes[`ctrl+shift+.`]
 :sc_move_window_backward: pass:quotes[`ctrl+shift+b`]
 :sc_move_window_forward: pass:quotes[`ctrl+shift+f`]
+:sc_move_window_to_top: pass:quotes[`ctrl+shift+``]
 :sc_new_tab: pass:quotes[`ctrl+shift+t`]
 :sc_new_window: pass:quotes[`ctrl+shift+enter`]
 :sc_next_layout: pass:quotes[`ctrl+shift+l`]
@@ -142,6 +145,8 @@ windows are:
 |Next tab  | {sc_next_tab}
 |Previous tab | {sc_previous_tab}
 |Next layout | {sc_next_layout}
+|Move tab forward | {sc_move_tab_forward}
+|Move tab backward | {sc_move_tab_backward}
 
 |===
 

kitty/boss.py

@@ -448,4 +448,10 @@ class Boss(Thread):
 
     def new_tab(self):
         self.tab_manager.new_tab()
+
+    def move_tab_forward(self):
+        self.queue_action(self.tab_manager.move_tab, 1)
+
+    def move_tab_backward(self):
+        self.queue_action(self.tab_manager.move_tab, -1)
     # }}}

kitty/kitty.conf

@@ -165,3 +165,5 @@ map ctrl+shift+left     previous_tab
 map ctrl+shift+t        new_tab
 map ctrl+shift+q        close_tab
 map ctrl+shift+l        next_layout
+map ctrl+shift+.        move_tab_forward
+map ctrl+shift+,        move_tab_backward

kitty/tabs.py

@@ -253,6 +253,14 @@ class TabManager:
     def tab_bar_height(self):
         return 0 if len(self.tabs) < 2 else cell_size.height
 
+    def move_tab(self, delta=1):
+        if len(self.tabs) > 1:
+            idx = self.active_tab_idx
+            nidx = (idx + len(self.tabs) + delta) % len(self.tabs)
+            self.tabs[idx], self.tabs[nidx] = self.tabs[nidx], self.tabs[idx]
+            self.active_tab_idx = nidx
+            glfw_post_empty_event()
+
     def title_changed(self, new_title):
         with self.tabbar_lock:
             self.tabbar_dirty = True