bug#38561: 27.0.50; Feature request: expose buffer size setting for process filters

[Eli Zaretskii]

> > 1. Document it in lsp-mode's readme 
> > 2. Override it with a setting in lsp-mode with a bigger value.
> > 
> > Both have clear advantages and disadvantages. Can you advise? 
> 
> I'd suggest the former, because if lsp-mode sets the value, it will
> affect the entire Emacs session.
> 
> If lsp-mode uses accept-process-output, it could bind the variable
> inside the form which calls accept-process-output.

Btw, my assumption was that the value will have to be changed from
default only in very rare situations.  If this is not the case, we
might indeed want that to be a parameter at process creation time (I
don't think we have process-local variables, do we?).