No output after resizing terminal window

[tom-henderson]

What version of bat are you using?
bat 0.15.4

Describe the bug you encountered:
For some files, bat produces no output if the terminal window has been resized. For example bat README.md on this file https://github.com/tom-henderson/bookmarks/blob/master/README.md produces no output if the terminal has been resized. I assume this is related to the pager since bat --paging=never README.md still works.

Describe what you expected to happen?
Bat would always produce output.

How did you install bat?
homebrew

---

system

$ uname -srm
Darwin 19.4.0 x86_64

$ sw_vers
ProductName: Mac OS X
ProductVersion: 10.15.4
BuildVersion: 19E287

bat

$ bat --version
bat 0.15.4

$ env
BAT_THEME=Tomorrow-Night-Bright
BAT_PAGER=less -RF

$ bat --list-languages
Found custom syntax set.

$ bat --list-themes
Found custom theme set.

bat_config

bat_wrapper

No wrapper script for 'bat'.

bat_wrapper_function

No wrapper function for 'bat'.

No wrapper function for 'cat'.

tool

$ less --version
less 487 (POSIX regular expressions)

[sharkdp]

Please see #1053 and the issues linked under "Handling of terminal resize events". I am assuming this is a duplicate of those?

[tom-henderson]

@sharkdp This might not be the same issue. I'm not resizing a window while bat is displaying a file. If I open a new window, resize it, and then use bat, some files will show no output.

[sharkdp]

This might not be the same issue. I'm not resizing a window while bat is displaying a file.

Oh, you are right. Sorry for marking this as a duplicate too quickly.

Could you please try to unset BAT_PAGER? bat should select less automatically. Your less version is quite old. If you unset BAT_PAGER, bat will provide all necessary command-line options for your version of less.

Even better would be to upgrade to a recent version of less.

I'm not sure if that would fix your problem, but it's worth a try. You could also try to display the file with less -RF after resizing the terminal.

[tigger04]

I have exactly the same issue. Curiously less -RF appears to have the same issue, so I guess it's not exactly a bat defect

[tigger04]

unsetting BAT_PAGER does seem to resolve it

[tom-henderson]

Ah yes so it looks like this issue is probably with less -RF and not with bat. Unsetting BAT_PAGER fixes this issue for me.

I think I had originally set BAT_PAGER in order to get the scroll wheel working in iTerm2.

[sharkdp]

Glad this could be resolved - thank you for the feedback!

The problem is that you have to pass -X for older versions of less, if you are also passing -F. If BAT_PAGER it not set, bat does this automatically. If BAT_PAGER is set, bat assumes that the user knows better and simply executes whatever has been set.