943                 _(b'cannot follow file not in parent revision: "%s"') % fname

   943                 _(b'cannot follow file not in parent revision: "%s"') % fname

   944             )

   944             )

   945         fctx = wctx.filectx(fname)

   945         fctx = wctx.filectx(fname)

   946         for fctx, linerange in dagop.blockancestors(fctx, fromline, toline):

   946         for fctx, linerange in dagop.blockancestors(fctx, fromline, toline):

   947             rev = fctx.introrev()

   947             rev = fctx.introrev()

   948             if rev not in userrevs:

   950             if rev not in userrevs:

   949                 continue

   951                 continue

   950             linerangesbyrev.setdefault(rev, {}).setdefault(

   952             linerangesbyrev.setdefault(rev, {}).setdefault(

   951                 fctx.path(), []

   953                 fctx.path(), []

   952             ).append(linerange)

   954             ).append(linerange)

   953 

   955 

   954     def nofilterhunksfn(fctx, hunks):

   956     def nofilterhunksfn(fctx, hunks):

   955         return hunks

   957         return hunks

   956 

   958 

   957     def hunksfilter(ctx):

   959     def hunksfilter(ctx):

   959         if fctxlineranges is None:

   961         if fctxlineranges is None:

   960             return nofilterhunksfn

   962             return nofilterhunksfn

   961 

   963 

   962         def filterfn(fctx, hunks):

   964         def filterfn(fctx, hunks):

   963             lineranges = fctxlineranges.get(fctx.path())

   965             lineranges = fctxlineranges.get(fctx.path())

   973                     yield hunk

   975                     yield hunk

   974 

   976 

   975         return filterfn

   977         return filterfn

   976 

   978 

   977     def filematcher(ctx):

   979     def filematcher(ctx):

   979         return scmutil.matchfiles(repo, files)

   981         return scmutil.matchfiles(repo, files)

   980 

   982 

   981     revs = sorted(linerangesbyrev, reverse=True)

   983     revs = sorted(linerangesbyrev, reverse=True)

   982 

   984 

   983     differ = changesetdiffer()

   985     differ = changesetdiffer()