Xcode menu item Editor > Structure > Comment/Uncomment always disabled

Number:rdar://27855179 Date Originated:2016-08-15
Status:open Resolved:
Product:Developer Tools Product Version:Xcode 8.0 beta 6 (8S201h)
Classification:UI/Usability Reproducible:always
In Xcode 8 beta-6 (also the case in betas 4 & 5), the menu item to toggle comment/uncomment (Editor > Structure > Comment) of code lines is broken and will never be available. The corresponding keyboard shortcut (Cmd-/) does not work either.

Steps to Reproduce:
1. Place cursor in any line of code.
2. Try to use the menu item to comment or uncomment the line of code.
3. Nothing happens

Expected Results:
The line of code should be commented-out (if currently not commented), of uncommented (if currently commented).

Actual Results:
Nothing happens.

Xcode Version 8.0 beta 6 (8S201h)
OS X 10.11.6 "El Capitan"

This is a function I literally use hundreds of times each day, so while it seems minor, this is actually a major problem and a productivity-killer, making it very difficult to use Xcode 8.

Have tested using Swift 2.3 code, and Objective-C code. Have also tested on 3 different computers, all running OS X 10.11.6: 2013 Mac Pro, 2012 MacBook Pro, 2011 MacBook Air. The Xcode comment/uncomment menu is disabled on all of them.

The Xcode beta-5 release notes state "The Editor’s Comment/Uncomment Selection command is functional when enabled. (27524523)". However, the issue was not fixed for me, and apparently for other people as well. See this discussion thread:

Late 2013 Mac Pro
3 GHz, 8 core Intel Xeon E5
AMD FirePro D500 3GB
OS X 10.11.6 "El Capitan"


Same issue here, with Xcode 8.2.1 on macOS 10.11

Appears to still be broken on the production version ... 8.0 (8A218a)

By cirrusflyer01 at Sept. 22, 2016, 1:22 p.m. (reply...)

This feature has been very unstable for a long time and in the past would just randomly stop working. I found in the past to fix the Cmd-/ key binding I could manually select the command from the Editor menu, which would seem to somehow reconnect the keyboard shortcut and it would work again (at least for a little while).

But as of Xcode 8 beta 6 things have gotten much worse, and now the menu items themselves are disabled, making the feature completely inaccessible. Like the poster says this is something I (and likely many others) use dozens of times per day. It's second nature to select a block of code and comment it out, and when it doesn't work the software feels VERY broken. This is a hugely important feature.

It is broken for all file types I've tested (Swift, Obj-C and XML). I really think you must have some fundamental implementation issues surrounding this feature because it's unreasonable how often it fails.

By chaiguy1337 at Aug. 25, 2016, 6:59 p.m. (reply...)

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