Re: complete file at point in buffer - solution and questions

[Dirk80]

Dirk80 wrote:
> 
> 2.) File completion in minibuffer shows the completion-buffer with bold
> letters at the first difference. How could I integrate that feature in my
> code when calling display-completion-list? I've looked a bit into the code
> of minibuffer.el. It seems that "defface completions-first-difference" is
> what I need. But I do not understand how to use it. The function
> display-completion-list has an optional parameter common-substring. But
> this is described obsolete.
> 

Ok, here I also found a solution. The common-substring is stored in the
variable "file" in my code. I give this as parameter to
display-completion-list and now the first different letter is bold.

But the description says that the parameter common-substring is obsolete.
Why? What is the correct way?
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