bracketed paste ANSI sequence on non-ANSI terminals

[John Tsiombikas]

I'm running bash with 5.2.15 which apparently uses readline 8.2, on
debian sid. Since readline made enable-bracketed-paste default to on, I
noticed garbage on some terminals, specifically pre-ANSI ones.

It turns out readline spews the ANSI sequence ESC[?2004h to enable
bracketed paste, regardless of the setting of TERM. I tested with
TERM=vt52 and TERM=adm3a, and I'm still seeing that sequence on every
line.

-- 
John Tsiombikas
http://nuclear.mutantstargoat.com/