Re: [QUESTION] How to use :filter in `make-process'?

[Michael Heerdegen]

stardiviner <numbchild@gmail.com> writes:

> Use lexical-binding in your example, it does not work. report error:
>
> : error in process sentinel: Symbol’s value as variable is void: op-fn
> [2 times]

Note that you need to bind the buffer-local variable lexical-binding to
a non-nil value before you eval the example.  Typically as file-local
variable in your source file.

Michael.