Stop removing blank line after magic comments on replacing old_content with new_content

[kovalevsky]

Despite of several PRs related to magic comment and a blank line after the comment (#491, #524) each run of annotate removes blank line after magic comment in my models.
Before running annotate:

# frozen_string_literal: true

# == Schema Information
...

after:

# frozen_string_literal: true
# == Schema Information

A blank line is required by ruby style guides and current behavior produces endless war rubocop vs. annotate.

After a short locking into the sources, I've figured out unclear part of a regexp inside annotate_pattern method: https://github.com/ctran/annotate_models/blame/26142667a1da560e681fc0621857a160edf26007/lib/annotate/annotate_models.rb#L90

As far as I see the code removes blank line after a magic comment (according to ^(\n|\r\n)?#) and doesn't restore it.
I'd be glad to fix the regexp or another part of the code. Could you point me, why that part of the regexp is needed? Annotate works well in my cases without ^(\n|\r\n)?# part of regexp inside annotate_pattern method.

Version

• annotate version
  2.7.4
• rails version
  5.2.0
• ruby version
  5.2.1

[fsateler]

This appears to be fixed by #573 , could we have a new release with this please?

[kovalevsky]

@fsateler i'm sorry for a late response. Yes, switching on master branch helped me.

[kovalevsky]

And yes, it would be nice to have it released!