customize-face: "Erase customization" doesn't work

[Reiner Steib]

Hi,

"Erase customization" doesn't work correctly with customize-face.
Steps to reproduce:

$ emacs \
    -font "-misc-fixed-medium-r-semicondensed--13-*-*-*-*-*-iso8859-1" \
    -l help-fns --eval "(customize-face 'help-argument-name)"

- I get the following customization buffer:

,----
| Operate on all settings in this buffer that are not marked HIDDEN:
|  [Set for Current Session] [Save for Future Sessions]
|  [Undo Edits] [Reset to Saved] [Erase Customization]   [Finish]
| 
| Help Argument Name face: (sample) [Hide Face]
|    [State]: STANDARD.
| Face to highlight argument names in *Help* buffers.
| Parent groups: Help
| Choice: [Value Menu]
|  Attributes: [ ] Font Family: *
|              [ ] Width: *
|              [ ] Height: *
|              [ ] Weight: *
|              [ ] Slant: *
|              [ ] Underline: *
|              [ ] Overline: *
|              [ ] Strike-through: *
|              [ ] Box around text: *
|              [ ] Inverse-video: *
|              [ ] Foreground: *
|              [ ] Background: *
|              [ ] Stipple: *
|              [X] Inherit:
|                  INS DEL Face: (sample) italic
|                  INS
`----

- Unset "Inherit"

- Press "Set for Current Session"

- Press "Erase Customization" --> "Inherit" isn't restored

- Press "Undo Edits" --> "Inherit" isn't restored

Bye, Reiner.
-- 
       ,,,
      (o o)
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