Mercurial Alias to show detailed information about changes on the commit message file

.hgrc

[committemplate]
changeset = {desc}\n\n
    HG: {extramsg}
    HG: user: {author}\n{ifeq(p2rev, "-1", "",
   "HG: branch merge\n")
   }HG: branch '{branch}'\n{if(currentbookmark,
   "HG: bookmark '{currentbookmark}'\n")  }{subrepos %
   "HG: subrepo {subrepo}\n"              }
   {splitlines(diff()) % 'HG: {line}\n'}