Is there a Mercurial command you can use after an hg pull to see a list of all files that will be need to be manually merged (ie: that have conflicts) when doing an
hg pull
I think hg status is what you are looking for.
hg status
You may want to read this chapter from Mercurial: The Definitive Guide
http://hgbook.red-bean.com/read/mercurial-in-daily-use.html