Add g. command to go to the last buffer modification position

README.asciidoc

@@ -245,6 +245,8 @@ Commands begining with g are used to goto certain position and or buffer:
  * _ga_: go to the previous (alternate) buffer
  * _gf_: open the file whose name is selected
 
+ * _g._: go to last buffer modifiction position
+
 View commands
 -------------
 

src/buffer.cc

@@ -715,4 +715,11 @@ void Buffer::run_hook_in_own_context(const String& hook_name, const String& para
     m_hooks.run_hook(hook_name, param, hook_handler.context());
 }
 
+BufferCoord Buffer::last_modification_coord() const
+{
+    if (m_history.empty())
+        return {};
+    return m_history.back().back().coord;
+}
+
 }

src/buffer.hh

@@ -136,6 +136,8 @@ public:
     bool           is_valid(BufferCoord c) const;
     bool           is_end(BufferCoord c) const;
 
+    BufferCoord    last_modification_coord() const;
+
     BufferIterator begin() const;
     BufferIterator end() const;
     ByteCount      byte_count() const;

src/normal.cc

@@ -315,18 +315,28 @@ void goto_commands(Context& context, int line)
                 CommandManager::instance().execute("edit '" + path + "'", context);
                 break;
             }
+            case '.':
+            {
+                context.push_jump();
+                auto pos = buffer.last_modification_coord();
+                if (buffer[pos.line].length() == pos.column + 1)
+                    pos = BufferCoord{ pos.line+1, 0 };
+                select_coord<mode>(buffer, pos, context.selections());
+                break;
+            }
             }
         }, "goto",
-        "g,k:  buffer top   \n"
-        "l:    line end     \n"
-        "h:    line begin   \n"
-        "j:    buffer bottom\n"
-        "e:    buffer end   \n"
-        "t:    window top   \n"
-        "b:    window bottom\n"
-        "c:    window center\n"
-        "a:    last buffer  \n"
-        "f:    file         \n");
+        "g,k:  buffer top        \n"
+        "l:    line end          \n"
+        "h:    line begin        \n"
+        "j:    buffer bottom     \n"
+        "e:    buffer end        \n"
+        "t:    window top        \n"
+        "b:    window bottom     \n"
+        "c:    window center     \n"
+        "a:    last buffer       \n"
+        "f:    file              \n"
+        ".:    last buffer change\n");
     }
 }