evolvecmd: add comments and new lines in content-divergence handling logic
I have visited this logic three times in last 10 days and I have to re-read the
whole code to make sure I don't miss any part. Adding comments will help
understanding the code in better and fast way.
import hghave
@hghave.check("docgraph-ext", "Extension to generate graph from repository")
def docgraph():
try:
import hgext.docgraph
hgext.docgraph.cmdtable # trigger import
except ImportError:
try:
import hgext3rd.docgraph
hgext3rd.docgraph.cmdtable # trigger import
except ImportError:
return False
return True