Paging broken

[makew0rld]

Describe the bug you encountered:

When using bat, it does not respond to mouse scrolling, and exiting bat does not clear the visible file buffer out of the terminal.

What did you expect to happen instead?

Bat is paging with less, and so I expect it to act exactly like less. When I use less, it responds to mouse scrolling, and the file is not visible after leaving less with q.

How did you install bat?

From the Arch Linux package repos. Specifically community/bat.

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bat version and environment

Software version

bat 0.18.0

Operating system

Linux 5.11.16-arch1-1

Command-line

bat dither.go --diagnostic 

Environment variables

SHELL=/usr/bin/zsh
PAGER=less
BAT_PAGER=<not set>
BAT_CACHE_PATH=<not set>
BAT_CONFIG_PATH=<not set>
BAT_OPTS=<not set>
BAT_STYLE=<not set>
BAT_TABS=<not set>
BAT_THEME=<not set>
XDG_CONFIG_HOME=<not set>
XDG_CACHE_HOME=<not set>
COLORTERM=truecolor
NO_COLOR=<not set>
MANPAGER=<not set>

Config file

Could not read contents of '/home/makeworld/.config/bat/config': No such file or directory (os error 2).

Compile time information

• Profile: release
• Target triple: x86_64-unknown-linux-gnu
• Family: unix
• OS: linux
• Architecture: x86_64
• Pointer width: 64
• Endian: little
• CPU features: fxsr,sse,sse2
• Host: x86_64-unknown-linux-gnu

Less version

> less --version 
less 581.2 (PCRE2 regular expressions)
Copyright (C) 1984-2021  Mark Nudelman

less comes with NO WARRANTY, to the extent permitted by law.
For information about the terms of redistribution,
see the file named README in the less distribution.
Home page: https://greenwoodsoftware.com/less

[makew0rld]

Just want to add that bat did not always do this. I'm not sure what caused the change, but I remember this working fine in the past.

[eth-p]

This is caused by bat failing to parse the version of less (fix coming in #1629).

Basically, bat extracts the version string 581.2 and tries to parse it as an integer. It encounters the . and fails, which causes bat to assume only the oldest version of less is available.

When using an old version of less, bat passes along the --no-init option, which causes the issues you're describing.

[makew0rld]

Sounds good, thanks! Hope a new version will come soon.

[sharkdp]

closing this, as #1629 by @aswild has been merged.

[sharkdp]

Fixed in bat 0.18.1