Visual Studio 2010: pattern based search replace other than regex? - regex

Question

I've taken over a project that is full of code like this:
if (aTraceUserids[t].Trim().ToUpper() == Userid().Trim().ToUpper())
{
// ...
}
What is - using tool-assisted expression formulation - a good way to do a search replace into something like this on a case by case base:
if (aTraceUserids[t].Equals(Userid(), StringComparison.InvariantCultureIgnoreCase))
{
// ...
}
Edit (thanks Dave for making me think on this further):
I know this should be possible with regular expressions, but those are hard to get right and document, so I wonder about tool assisted ways that help me both phrase the expressions and execute them.
Ideally I'm looking for a pattern based search/replace tool that allows me to
enter the search/replace patterns
enter the patterns for the files and directory names to match
visually assists me with the search/replace matches, and allows me to post-edit each occurrence
I don't care much which platform as these kinds of search/replace actions will likely apply to other big code bases as well.
So: any solution based on *nix, Windows or web are fine. CygWin and/or WINE based solutions are fine too. (That's why I removed the VS2010 tag and added some platform tags).

Answer 1

Since this was originally tagged with 'Visual Studio', Visual Studio itself can do regular-expression based find/replace, and the standard 'Find and Replace' dialog will let you pick and choose by hitting 'Find Next', 'Replace' or 'Replace All' as you choose.
For example, I recently changed an API from;
Log.Error(string message, bool someotherArg);
to
Log.Error(string message);
And easily used Visual Studio to replace all usage throughout my codebase of this modified API like so;
Find what;
Log.Error({.*}, true);
Replace with:
Log.Error(\1);
The backquote in the replace line \1 puts the grouped regex contained by {...} into that spot in the replace.
Handy, and built-in. Works for me.