4 files changed, 20 insertions, 2 deletions
diff --git a/src/background/actions/operation.js b/src/background/actions/operation.js
index 1e4990c..cfee868 100644
--- a/src/background/actions/operation.js
+++ b/src/background/actions/operation.js
@@ -27,6 +27,8 @@ const exec = (operation, tab) => {
     return tabs.selectFirstTab();
   case operations.TAB_LAST:
     return tabs.selectLastTab();
+  case operations.TAB_PREV_SEL:
+    return tabs.selectPrevSelTab();
   case operations.TAB_RELOAD:
     return tabs.reload(tab, operation.cache);
   case operations.TAB_PIN:
diff --git a/src/background/tabs.js b/src/background/tabs.js
index b34f7c2..d50d8e5 100644
--- a/src/background/tabs.js
+++ b/src/background/tabs.js
@@ -1,3 +1,13 @@
+let prevSelTab = 1;
+let currSelTab = 1;
+
+browser.tabs.onActivated.addListener((activeInfo) => {
+  return browser.tabs.query({ currentWindow: true }).then(() => {
+    prevSelTab = currSelTab;
+    currSelTab = activeInfo.tabId;
+  });
+});
+
 const closeTab = (id) => {
   return browser.tabs.remove(id);
 };
@@ -93,6 +103,10 @@ const selectLastTab = () => {
   });
 };
 
+const selectPrevSelTab = () => {
+  return browser.tabs.update(prevSelTab, { active: true });
+};
+
 const reload = (current, cache) => {
   return browser.tabs.reload(
     current.id,
@@ -117,6 +131,6 @@ const duplicate = (id) => {
 
 export {
   closeTab, reopenTab, selectAt, selectByKeyword, getCompletions,
-  selectPrevTab, selectNextTab, selectFirstTab, selectLastTab, reload,
-  updateTabPinned, toggleTabPinned, duplicate
+  selectPrevTab, selectNextTab, selectFirstTab, selectLastTab, selectPrevSelTab,
+  reload, updateTabPinned, toggleTabPinned, duplicate
 };
diff --git a/src/shared/operations.js b/src/shared/operations.js
index 7334369..19466df 100644
--- a/src/shared/operations.js
+++ b/src/shared/operations.js
@@ -38,6 +38,7 @@ export default {
   TAB_NEXT: 'tabs.next',
   TAB_FIRST: 'tabs.first',
   TAB_LAST: 'tabs.last',
+  TAB_PREV_SEL: 'tabs.prevsel',
   TAB_RELOAD: 'tabs.reload',
   TAB_PIN: 'tabs.pin',
   TAB_UNPIN: 'tabs.unpin',
diff --git a/src/shared/settings/default.js b/src/shared/settings/default.js
index bcd7731..e81df2b 100644
--- a/src/shared/settings/default.js
+++ b/src/shared/settings/default.js
@@ -28,6 +28,7 @@ export default {
     "J": { "type": "tabs.next", "count": 1 },
     "g0": { "type": "tabs.first" },
     "g$": { "type": "tabs.last" },
+    "<C-6>": { "type": "tabs.prevsel" },
     "r": { "type": "tabs.reload", "cache": false },
     "R": { "type": "tabs.reload", "cache": true },
     "zp": { "type": "tabs.pin.toggle" },