I will be the first to stand up and say that I hate most forum search tools. They typically suck balls and are nitpicky. Beyond that, most forum discussions are littered with typos and misspellings. Still, this particular topic is one that probably WOULD have come out of a simple search without much futzing around, especially given how frequently this topic comes up. Posters are rightfully expected to attempt a search or two before asking. On the other hand, posters are all too often taken to task for being unsuccessful with an insufficient search tool.
tldr: I have no problem with someone asking a repeat question as long as they first made at least an effort to use the forum's search tools to find it. I won't blame someone for not finding what they need in the results unless the result should have been pretty obvious. The effort is what counts in most cases.