bash_exports

#!/bin/bash

# Bash Variables.
# https://www.gnu.org/software/bash/manual/html_node/Bash-Variables.html

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# Stop the macOS Terminal from showing a warning
# message when Zsh is not the default shell.
#
# https://support.apple.com/en-us/HT208050

export BASH_SILENCE_DEPRECATION_WARNING=1

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# Make `vim` the default editor.

export EDITOR="vim"

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# Ignore commands that start with spaces and duplicates.

export HISTCONTROL=ignoreboth

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# Increase the maximum number of lines of history
# persisted in the history file (default value is 500).

export HISTFILESIZE=10000

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# Don't add certain commands to the history file.

export HISTIGNORE="&:[bf]g:c:clear:history:exit:q:pwd:* --help"

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# Increase the maximum number of commands recorded
# in the command history (default value is 500).

export HISTSIZE=10000

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# Prefer US English and use UTF-8 encoding.

export LANG="en_US"
export LC_ALL="en_US.UTF-8"

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# Use custom `less` colors for `man` pages.

export LESS_TERMCAP_md="$(tput bold 2> /dev/null; tput setaf 2 2> /dev/null)"
export LESS_TERMCAP_me="$(tput sgr0 2> /dev/null)"

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# Don't clear the screen after quitting a `man` page.

export MANPAGER="less -X"

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# Increase the maximum number of lines of history persisted
# in the `Node` REPL history file (default value is 1000).
#
# https://github.com/nodejs/node/blob/c948877688ff2b6a37f2c88724b656aae495c7b2/doc/api/repl.md#persistent-history

export NODE_REPL_HISTORY_SIZE=10000

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# If not set, make new shells get the history lines from all previous
# shells instead of the default "last window closed" history.

if ! printf "%s" "$PROMPT_COMMAND" | grep "history -a" &> /dev/null; then
    export PROMPT_COMMAND="history -a; $PROMPT_COMMAND"
fi

# Remove `update_terminal_cwd` from the `PROMPT_COMMAND`
# environment variable if it doesn't exist in the current shell.
#
# On macOS `update_terminal_cwd` is added to the `PROMPT_COMMAND`
# environment variable however, `/etc/bashrc_Apple_Terminal`
# that contains the shell function definition is only executed
# for `Terminal.app`. Other terminals (e.g.: VS Code's terminal)
# will not have the shell function, hence, they will show the
#
#    bash: update_terminal_cwd: command not found
#
# error everytime the prompt is displayed.

if  printf "%s" "$PROMPT_COMMAND" | grep "update_terminal_cwd" &> /dev/null &&
    ! command -v update_terminal_cwd &> /dev/null; then
    export PROMPT_COMMAND="$(printf "%s" "$PROMPT_COMMAND" | sed 's/\(.*\)update_terminal_cwd;*\(.*\)/\1\2/g')"
fi

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# Make Python use UTF-8 encoding for output to stdin/stdout/stderr.

export PYTHONIOENCODING="UTF-8"