887             if len(parents) != 1:

   887             if len(parents) != 1:

   888                 return False

   888                 return False

   889             pctx = parents[0]

   889             pctx = parents[0]

   890         if ctx.branch() != pctx.branch():

   890         if ctx.branch() != pctx.branch():

   891             return False

   891             return False

   892         # ctx changes more files (not a subset of memworkingcopy)

   894         # ctx changes more files (not a subset of memworkingcopy)

   893         if not set(ctx.files()).issubset(set(memworkingcopy)):

   895         if not set(ctx.files()).issubset(set(memworkingcopy)):

   894             return False

   896             return False

   895         for path, content in pycompat.iteritems(memworkingcopy):

   897         for path, content in pycompat.iteritems(memworkingcopy):

   896             if path not in pctx or path not in ctx:

   898             if path not in pctx or path not in ctx: