Re: Layered display API

[Dmitry Gutov]

On 08/16/2014 11:41 AM, Eli Zaretskii wrote:

> Please file a bug report.

http://debbugs.gnu.org/cgi/bugreport.cgi?bug=18276

> Something like this:
>
>    (put-text-property POS1 POS1+4 'eliz "xxxx")
>    (put-text-property 1 5 STRING 'eliz "xxxx")
>    (put-text-property 8 12 STRING 'eliz "xxxx")
>
> where POS1 is the buffer position of the second 'a', and STRING is the
> string that is the value of the 'display' property.

Yes, this doesn't sound too good: it will require modifying the buffer 
contents, as opposed to using an overlay, which can be removed at once.

Since we'll have to modify display strings, the code will have to 
account for the display logic, line-prefix, before-string, etc, anyway, 
if only to calculate which part of our "new" text falls on each 
respective display property, or on the "plain" buffer text.