It's caused by lookahead regex used in dash comment regex for inlining
PowerShell. This commit changes dash comment inlining.
- Change regex to one without lookahead.
- Add more test cases for inlining dash comment in tricky situations.
- Refactor makeInlineComment to be it's own function to easily test
other regex options.
- Document all regex alternatives.
- Remove redundant null check (`||`) with adding safe navigation
operator (`?`) to allow variable before check to be null instead of
throwing exception.
0db8cc4206