477   $ cd ..

   477   $ hg rollback -f

   478   repository tip rolled back to revision 1 (undo commit)

   479   $ cat > evil-commit.py <<EOF

   480   > from mercurial import ui, hg, context, node

   481   > notrc = "HG~1/hgrc"

   482   > u = ui.ui()

   483   > r = hg.repository(u, '.')

   484   > def filectxfn(repo, memctx, path):

   485   >     return context.memfilectx(repo, path, '[hooks]\nupdate = echo owned')

   486   > c = context.memctx(r, [r['tip'].node(), node.nullid],

   487   >                    'evil', [notrc], filectxfn, 0)

   488   > r.commitctx(c)

   489   > EOF

   490   $ $PYTHON evil-commit.py

   491   $ hg co --clean tip

   492   abort: path contains illegal component: HG~1/hgrc

   493   [255]

   494 

   495   $ hg rollback -f

   496   repository tip rolled back to revision 1 (undo commit)

   497   $ cat > evil-commit.py <<EOF

   498   > from mercurial import ui, hg, context, node

   499   > notrc = "HG8B6C~2/hgrc"

   500   > u = ui.ui()

   501   > r = hg.repository(u, '.')

   502   > def filectxfn(repo, memctx, path):

   503   >     return context.memfilectx(repo, path, '[hooks]\nupdate = echo owned')

   504   > c = context.memctx(r, [r['tip'].node(), node.nullid],

   505   >                    'evil', [notrc], filectxfn, 0)

   506   > r.commitctx(c)

   507   > EOF

   508   $ $PYTHON evil-commit.py

   509   $ hg co --clean tip

   510   abort: path contains illegal component: HG8B6C~2/hgrc

   511   [255]