Command Add/Remove Line Comment inserts an unwanted space

[ghost]

• VSCode Version: Code - Insiders 1.15.0-insider (47a49c7, 2017-07-14T07:45:27.194Z)
• OS Version: Windows_NT x64 10.0.15063
• Extensions: All extensions have been disabled

Extension	Author (truncated)	Version
better-comments	aar	0.1.2
npm-intellisense	chr	1.3.0
path-intellisense	chr	1.4.2
vscode-svgviewer	css	1.4.2
vscode-eslint	dba	1.2.11
vscode-npm-script	eg2	0.2.0
auto-close-tag	for	0.4.3
auto-complete-tag	for	0.0.2
auto-rename-tag	for	0.0.14
html-tag-wrapper	hwe	0.1.7
search-node-modules	jas	1.1.1
HTMLHint	mka	0.3.3
atom-keybindings	ms-	2.9.1
advanced-new-file	pat	0.5.0
vscode-icons	rob	7.10.1
stylelint	shi	0.27.0
nodejs-extension-pack	wad	0.1.9
JavaScriptSnippets	xab	1.4.1
html-css-class-completion	Zig	1.7.0

(1 theme extensions excluded)

---

Steps to Reproduce:

1. Set the Language Mode to CSS
2. write

body {
  color: #fff;
}

3. Use Add Line Comment command on an text selection, then Remove Line Comment command
4. See an extra space before and after the selection

Using Add/Remove Line Comment command (with the Language Mode set to CSS) on an text selection inserts a single space before and after.

Reproduces without extensions: Yes

[spongessuck]

Also seeing this in 1.14.1 when I just use the add comment shortcut (cmd+/ on macOS) on HTML.

[woncode]

I'm also meet this issue in 1.14.2

[alexdima]

I think PR #30818 resolved this issue: