Re: image descriptors and defimage with :data

[Nic Ferrier <nferrier@tapsellferrier.co.uk>]

Nic said:
     Emacs 21 manual says that defimage must have at least the following 
     properties in the props list: 

rms replied:  
> Where does it say that?  Here is the text I see: 
>  
>     Each argument in @var{specs} has the form of a property list, and each 
>     one should specify at least the @code{:type} property and either the 
>     @code{:file} or the @code{:data} property.  The value of @code{:type} 
>     should be a symbol specifying the image type, the value of 
>     @code{:file} is the file to load the image from, and the value of 
>     @code{:data} is a string containing the actual image data.  Here is an 
>     example: 
>  
> However, judging from the previous node in the manual, I think that 
> :data is not supported yet for image type JPEG.  If so, we would like 
> to support it; would you like to try to implement it? 

The function documentation string for defimage says this:

    Each image specification in SPECS is a property list.  The contents of
    a specification are image type dependent.  All specifications must at
    least contain the properties `:type TYPE' and either `:file FILE' or
    `:data DATA', where TYPE is a symbol specifying the image type,
    e.g. `xbm', FILE is the file to load the image from, and DATA is a
    string containing the actual image data.  The first image
    specification whose TYPE is supported, and FILE exists, is used to
    define SYMBOL.

I am trying to narrow the problem down so that I can either patch it
or give a better report.


Nic

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