gJ in visual mode

ROADMAP.md

@@ -295,7 +295,7 @@ Status | Command | Description
 :white_check_mark:    | :1234:  J		| join N-1 lines (delete EOLs)
 :white_check_mark:    |    {visual}J	| join the highlighted lines
 :white_check_mark:    | :1234:  gJ	| 	like "J", but without inserting spaces
-    |    {visual}gJ	| like "{visual}J", but without inserting spaces
+:white_check_mark:|   {visual}gJ	| like "{visual}J", but without inserting spaces
     | :[range]d [x]	| delete [range] lines [into register x]
 
 ## Copying and moving text

src/actions/actions.ts

@@ -3017,6 +3017,32 @@ class ActionJoinNoWhitespace extends BaseCommand {
   }
 }
 
+@RegisterAction
+class ActionJoinNoWhitespaceVisualMode extends BaseCommand {
+  modes = [ModeName.Visual];
+  keys = ["g", "J"];
+
+  public async exec(position: Position, vimState: VimState): Promise<VimState> {
+    let actionJoin = new ActionJoinNoWhitespace();
+    let start = Position.FromVSCodePosition(vscode.window.activeTextEditor.selection.start);
+    let end = Position.FromVSCodePosition(vscode.window.activeTextEditor.selection.end);
+
+    if (start.line === end.line) {
+      return vimState;
+    }
+
+    if (start.isAfter(end)) {
+      [start, end] = [end, start];
+    }
+
+    for (let i = start.line; i < end.line; i++) {
+      vimState = await actionJoin.exec(start, vimState);
+    }
+
+    return vimState;
+  }
+}
+
 @RegisterAction
 class ActionReplaceCharacter extends BaseCommand {
   modes = [ModeName.Normal];