Script that asks to write to terminal when using Bat in --paging=always mode

[RedSnt]

So I prefer always having paging on when using Bat and I found out that one can't actually print to the terminal from inside Less because of how Less works, and while Bat does have the option of only printing to terminal if the output is less than a single page, I prefer this method of just being asked after exiting Less:

#!/usr/bin/env bash
set -euo pipefail

#########################################################################################
# Simple script that can both read a file, but also get piped into.                     #
# It does the same as "bat" except it asks the user if they want a printout afterwards. #
#########################################################################################

# Check whether arguments were given or pipe input received
if (( $# == 0 )) && [[ -t 0 ]]; then
    printf 'Error: provide a text file or pipe input into the script.\n' >&2
    exit 2
fi

tmp=$(mktemp) || exit 1 # Try to create temporary file, and if that fails, exit the script
trap 'rm -f -- "$tmp"' EXIT # If script is interrupted, ALWAYS run this command (except if signal 9/KILL is used or power outage)

get_cursor_row() {
    local old_settings reply

    old_settings=$(stty -g </dev/tty) || return 1 # Saving terminal settings for later restoration.

    # The terminal's cursor-position response does not contain a newline,
    # so read it in noncanonical mode.
    stty -icanon -echo min 0 time 10 </dev/tty

    # Request the cursor position: response is ESC[row;columnR
    printf '\033[6n' >/dev/tty
    IFS= read -r -d R reply </dev/tty || true

    # Always restore the terminal settings.
    stty "$old_settings" </dev/tty

    if [[ $reply =~ $'\e'\[([0-9]+)\;[0-9]+ ]]; then # Regex for checking if the answer is valid
        printf '%s\n' "${BASH_REMATCH[1]}" # Extract first array as it is the row number from \033[6n aka tput u7
    else
        return 1
    fi
}

# Precaution against one of these commands failing, it simply returns true no matter the outcome
if command bat --paging=never --color=always "$@" | tee "$tmp" | command less --RAW-CONTROL-CHARS --mouse # --use-color
then
    : # Almost the same as "true"
else
    :
fi

rows=$(tput lines) # This gets how tall our terminal is
row=$(get_cursor_row) || row=1 # This checks which row the cursor is on

printf '\033[sPrint output? [y/N] ' # s = save cursor position, then ask the user for input
IFS= read -r answer < /dev/tty || true # Ensures that input is taken from the terminal

# This erases the previous 2 lines after the question has been asked
if (( row >= rows - 2 )); then # If we're 2 lines or less from the bottom then
    printf '\033[u\033[2K\033[1F\033[2K'
else # If we're not 2 lines from the bottom, let's use a different line clearing method.
    printf '\033[u\033[2K'
fi

if [[ $answer =~ ^[Yy]$ ]]; then # If user said (?:y|Y) then let's print our temporary file
    command cat "$tmp"
fi;

unset row rows

I've saved it as ~/.local/bin/bat_choice.sh on my system with ~/.local/bin of course being in $PATH

Perhaps over-engineered what with the line erasure thing which is like half the script, I guess one can remove that if it isn't a bother.

Usage could be bat_choice.sh /etc/os-release or cat /etc/os-release | bat_choice.sh

Anywhoodle, just a little saturday afternoon Bat related project I noodled with that someone might find useful :)