XEmacs-20.3/Emacs-20.2 enriched-decode bug [Was: Re: bad article]

[Danny Siu <dsiu@Adobe.COM>]

Lars Magne Ingebrigtsen writes:

  Lars> Joerg Plate <Plate@Psyche.HB.North.de> writes:
  >> Signaling: (wrong-type-argument integer-or-marker-p nil)
  >> put-text-property(1230 nil unknown ("x-fontsize"))
  >> format-deannotate-region(

  Lars> [...]

  >> mime-preview/display-body(

  Lars> Looks like a SEMI bug.

I don't think so.

I encountered this bug everyday.  I guess more people are using mailers that
encode formatted mail using enriched.

Anyways, the problem happens whenever a "Content-type: text/enriched;
charset=us-ascii" mail is read.  format-deannotate-region (in
listp/prim/format.el) calls put-text-property with a nil as 2nd argument.
format-deannotate-region is called by enriched-decode (in
lisp/modes/enriched.el).

To reproduce, highlight the following line

<x-fontsize><param>13</param>Enriched is broken!!</x-fontsize>

and do

(enriched-decode (region-beginning) (region-end))

Any x-* tags will fail in enriched-mode.

I am using XEmacs-20.3 but FSF Emacs-20.2 fails the same way.

  Lars> -- (domestic pets only, the antidote for overdose, milk.)
  Lars>   larsi@gnus.org * Lars Magne Ingebrigtsen

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 Danny Dick-Fung Siu                              mailto:dsiu@adobe.com 
 WebReady Printing Group           mailto:dsiu@alumni.eecs.berkeley.edu 
 Adobe Systems Incorporated          http://www.csua.berkeley.edu/~dsiu 
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