I'm not sure whether it makes a difference but could you try the grep tool which is bundled with UnxUtils? This one has been tested and works well with Geany (though this is no guarantee it will solve the problem).
http://unxutils.sourceforge.net/UnxUpdates.zip More probably, we need to convert the result from the grep command before using it. --- Reply to this email directly or view it on GitHub: https://github.com/geany/geany/issues/783#issuecomment-160555871
