@Ahmad/John - thx for the further clarification. I guess I just preferred the simplicity of the "old" regex engine - I like quick, fast editing, not faffing learning more regex syntax that is crippling to type repeatedly. Any chance of what I have seen often done with other regex dialogs of a "multiline" checkbox for those of us happy to do things the way we always did?
@Weedfreak - I feel your pain and concur with some of your points (not having a separate Find dialog wouldn't bother me, if functionally the replacement was complete). I'll email John with my thoughts rather than publicly here, so he doesn't have to worry about publicly slapping me for the ones he disagrees with

Hopefully given time the long list of core issues, particularly those that have *always* existed in Sigil can be sorted out soon. The cosmetic ones are trivial provided there is agreement which is always the hard part. In the meantime, 0.4.2 is the devil I know...