The easiest way to do this is to remove the space from after the //
. Open your Packages
folder via Preferences -> Browse Packages...
and create a folder called JavaScript
. I assume you're on OS X, so the full path to the folder is ~/Library/Application Support/Sublime Text 3/Packages
. Next, create a new file in Sublime with the following contents:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>name</key>
<string>Comments</string>
<key>scope</key>
<string>source.js, source.json</string>
<key>settings</key>
<dict>
<key>shellVariables</key>
<array>
<dict>
<key>name</key>
<string>TM_COMMENT_START</string>
<key>value</key>
<string>//</string>
</dict>
<dict>
<key>name</key>
<string>TM_COMMENT_START_2</string>
<key>value</key>
<string>/*</string>
</dict>
<dict>
<key>name</key>
<string>TM_COMMENT_END_2</string>
<key>value</key>
<string>*/</string>
</dict>
</array>
</dict>
<key>uuid</key>
<string>A67A8BD9-A951-406F-9175-018DD4B52FD1</string>
</dict>
</plist>
and save it in the Packages/JavaScript
folder as Comments.tmPreferences
. You'll notice that the TM_COMMENT_START
value is //
, whereas in the original it's //
. Restart Sublime, and now when you're editing JavaScript or JSON files and hit Command ⌘/ your code will be commented out without the addition of a space.