export and unset - Githubissues

[ ] export var - adds to the list key var with empty value
[ ] export var=smt - if var does not exist adds entry, if exists - changes value
[ ] unset var - removes var from list. if no var or no arguments - it does nothing

[ ] export displays :

declare -x GIT_ASKPASS="/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/git/dist/askpass.sh"
declare -x HOME="/Users/kglebows"
declare -x LANG="en_US.UTF-8"
declare -x LOGNAME="kglebows"
declare -x MallocNanoZone="0"
declare -x OLDPWD
declare -x ORIGINAL_XDG_CURRENT_DESKTOP="undefined"
declare -x PATH="/Users/kglebows/.brew/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/munki:/Library/Apple/usr/bin:/Users/kglebows/.brew/bin"
declare -x PWD="/Users/kglebows/Desktop/Workspace/42_minishell/42_minishell"
declare -x SHELL="/bin/zsh"
declare -x SHLVL="2"
declare -x SSH_AUTH_SOCK="/private/tmp/com.apple.launchd.B7IA94e5As/Listeners"
declare -x TERM="xterm-256color"
declare -x TERM_PROGRAM="vscode"
declare -x TERM_PROGRAM_VERSION="1.84.2"
declare -x TMPDIR="/var/folders/zz/zyxvpxvq6csfxvn_n000chtr00346p/T/"
declare -x USER="kglebows"
declare -x USER_ZDOTDIR="/Users/kglebows"
declare -x VSCODE_GIT_ASKPASS_EXTRA_ARGS="--ms-enable-electron-run-as-node"
declare -x VSCODE_GIT_ASKPASS_MAIN="/Applications/Visual Studio Code.app/Contents/Resources/app/extensions/git/dist/askpass-main.js"
declare -x VSCODE_GIT_ASKPASS_NODE="/Applications/Visual Studio Code.app/Contents/Frameworks/Code Helper (Plugin).app/Contents/MacOS/Code Helper (Plugin)"
declare -x VSCODE_GIT_IPC_HANDLE="/var/folders/zz/zyxvpxvq6csfxvn_n000chtr00346p/T/vscode-git-519a257f00.sock"
declare -x VSCODE_INJECTION="1"
declare -x XPC_FLAGS="0x0"
declare -x XPC_SERVICE_NAME="0"
declare -x ZDOTDIR="/Users/kglebows"
declare -x __CF_USER_TEXT_ENCODING="0x190D6:0x0:0x0"
declare -x t=""
declare -x thisisnotshowinginENV
declare -x var

kglebows / 42_minishell

export and unset #5