Peter Geoghegan <p...@bowt.ie> writes: > On Fri, Jan 3, 2020 at 7:06 PM Peter Geoghegan <p...@bowt.ie> wrote: >> No. Also tried setting PG_COLOR="off" and CLICOLOR=0 -- that also >> didn't help. (This was based on possibly-relevant vars that "env" >> showed were set).
Yeah, that's not terribly surprising, because if I'm reading those escape sequences correctly they're not about color. They seem to be just cursor movement and line clearing, according to [1]. What I'm mystified by is why your copy of libreadline is choosing to do that, rather than just space over to where the word should be printed which is what every other copy seems to be doing. I have a fresh new Debian installation at hand, with $ dpkg -l | grep readline ii libreadline-dev:amd64 7.0-5 amd64 GNU readline and history libraries, development files ii libreadline5:amd64 5.2+dfsg-3+b13 amd64 GNU readline and history libraries, run-time libraries ii libreadline7:amd64 7.0-5 amd64 GNU readline and history libraries, run-time libraries ii readline-common 7.0-5 all GNU readline and history libraries, common files and I'm not seeing the failure on it, either with TERM=xterm or with TERM=xterm-256color. So what's the missing ingredient? > Removing the single check_completion() test from 010_tab_completion.pl > that actually fails on my system ("offer multiple table choices") > fixes the problem for me -- everything else passes. > I suppose that this means that the problem is in "offer multiple table > choices" specifically. I'd hate to conclude that we can't test any completion behavior that involves offering a list. If we can't coerce libreadline into being less avant-garde in its screen management, I suppose we could write a regex to recognize xterm escape sequences and ignore those. But I'd be happier about this if I could reproduce the behavior. I don't like the feeling that there's something going on here that I don't understand. BTW, it seems somewhat likely that this is less about libreadline than about its dependency libtinfo. On my machine that's from ii libtinfo6:amd64 6.1+20181013-2+deb10u2 amd64 shared low-level terminfo library for terminal handling what about yours? regards, tom lane [1] https://www.xfree86.org/current/ctlseqs.html