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Re: Idea: Be able to use text properties as face attributes

From: Clément Pit-Claudel
Subject: Re: Idea: Be able to use text properties as face attributes
Date: Sun, 26 Mar 2017 18:14:09 -0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0

On 2017-03-26 17:42, Drew Adams wrote:
> That might be another possible enhancement.  But I think
> that is already possible using an anonymous face (see
> (elisp) `Special Properties'):
>  (put-text-property 30 42 'face '(:family "Palatino"))
> Is there something else you were thinking of here?

Not much: it's just an idea I had while reading your post.  it seems somewhat 
arbitrary to add a level of indirection for certain properties (if I want to 
make some text bold, I need to append to its 'face property — whereas if I want 
to make it invisible, I can just apply 'invisible to it.  Maybe the two 
concepts would gain from being unified ?

> Maybe you could elaborate, e.g., with a (fictitious) example?
> Maybe show what else you think is needed for that, beyond
> what I suggested.

I think your proposal would make what I described possible :)  I was describing 
a possible generalization of it ((1) suppressing the distinction between text 
properties and face properties, and (2) generalizing faces to be collections of 
arbitrary text properties — your proposal is essentially (2), and I think it 
enables the conceptual cleanup (1)).


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