SYSTEMD_PAGER=lnav quits and prints ANSI escape code for colors on terminal

[KAGEYAM4]

lnav version v0.13.0

Describe the bug lnav will open and quit and output will be shown on treminal with ANSI escape code text prepended.

To Reproduce Set the following variables -->

1. SYSTEMD_PAGER='lnav -q'
2. SYSTEMD_PAGERSECURE=false
3. systemctl cat graphical.target

Instead of opening in lnav, the following gets printed on terminal -->

[phoenix@ArchLinux ~]$ systemctl cat graphical.target
# /usr/lib/systemd/system/graphical.target
⎋[0;1;38:5:245m#  SPDX-License-Identifier: LGPL-2.1-or-later
⎋[0;1;38:5:245m#
⎋[0;1;38:5:245m#  This file is part of systemd.
⎋[0;1;38:5:245m#
⎋[0;1;38:5:245m#  systemd is free software; you can redistribute it and/or modify it
⎋[0;1;38:5:245m#  under the terms of the GNU Lesser General Public License as published by
⎋[0;1;38:5:245m#  the Free Software Foundation; either version 2.1 of the License, or
⎋[0;1;38:5:245m#  (at your option) any later version.
⎋[0;1;38:5:245m
[Unit]
Description=Graphical Interface
Documentation=man:systemd.special(7)
Requires=multi-user.target
Wants=display-manager.service
Conflicts=rescue.service rescue.target
After=multi-user.target rescue.service rescue.target display-manager.service
AllowIsolate=yes

[tstack]

I don't think this is happening anymore on the top-of-tree. Unfortunately, I'm not quite sure what I did that caused the change... sigh.

[KAGEYAM4]

This is still happening, i checked ->

1. lnav 0.13.1 from github

2. lnav 0.13.1-beta3-13-g26c467d from aur lnav-git

[tstack]

Ah, I think I understand now... what terminal are you using and what is TERM set to?

In the snippet you included, the escape sequence is:

[0;1;38:5:245m

lnav is expecting semi-colons and not colons for the color number (as described here -- https://en.wikipedia.org/wiki/ANSI_escape_code#8-bit). Since it doesn't recognize the sequence, it is dumped directly to the output. It looks like colon is the truly right thing to do, so I should fix that.

Thanks for the heads up.

[tstack]

Okay, I'm pretty sure this is fixed now.

[KAGEYAM4]

Yes, its fixed.

But lnav is still not being opened as pager for this command -> systemctl cat graphical.target

I am also conflicted to use lnav as a pager for systemctl command as some colors are still not being shown by lnav when output is piped to it. Systemd only provides one variable SYSTEMD_PAGER for both journalctl and systemctl commands.