bug#31155: 26.1; electric-pair-mode sometimes inserts extra ) in process buffers

[Charles A. Roelli]

> From: Alex Branham <alex.branham@gmail.com>
> Date: Sat, 14 Apr 2018 16:06:30 -0500
> 
> In buffers running processes (e.g. M-x run-python or M-x R if you have
> ESS), electric-pair-mode sometimes (but not always) inserts ) instead of
> closing the paren pairing. So typing exit() occasionally results in
> exit())
> 
> I can't figure out how to reliably reproduce this.
> 
> In GNU Emacs 26.1 (build 1, x86_64-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
>  of 2018-04-11 built on mars
> Windowing system distributor 'The X.Org Foundation', version 11.0.11906000

I've also seen this with PDB (via M-x pdb).