D-Programming-Language/dmd — pull request #885 by 9rnsr (2012-04-17 06:45:26+00:00)
Title: Issue 7922 - alias this causes weird formatting issues for strings

This was a regression of fixing 7583, and redundant copy of syntax tree have been made this problem.
So I revert efd4711 + cd7dfca, and add necessary and sufficient copy.