plugins: Add plugin "sudo"

plugins/sudo/README.md

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+# sudo
+
+Easily prefix your current or previous commands with `sudo` by pressing <kbd>esc</kbd> twice.
+
+To use it, add `sudo` to the plugins array in your bashrc file:
+
+```bash
+plugins=(... sudo)
+```
+
+## Usage
+
+### Current typed commands
+
+Say you have typed a long command and forgot to add `sudo` in front:
+
+```console
+$ apt-get install build-essential
+```
+
+By pressing the <kbd>esc</kbd> key twice, you will have the same command with `sudo` prefixed without typing:
+
+```console
+$ sudo apt-get install build-essential
+```
+
+### Previous executed commands
+
+Say you want to delete a system file and denied:
+
+```console
+$ rm some-system-file.txt
+-su: some-system-file.txt: Permission denied
+$
+```
+
+By pressing the <kbd>esc</kbd> key twice, you will have the same command with `sudo` prefixed without typing:
+
+```console
+$ rm some-system-file.txt
+-su: some-system-file.txt: Permission denied
+$ sudo rm some-system-file.txt
+Password:
+$
+```
+
+## Credits
+
+Inspired by ohmyzsh sudo plugin.
+

plugins/sudo/sudo.plugin.sh

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+#! bash oh-my-bash.module
+
+function _omb_plugin_sudo_add_sudo {
+  if [[ -z $READLINE_LINE ]]; then
+    READLINE_LINE="$(fc -ln -1 | command sed 's/^[[:space:]]\{1,\}//')"
+  fi
+  READLINE_LINE="sudo $READLINE_LINE"
+  ((READLINE_POINT += 5))
+}
+
+bind -x '"\e\e": _omb_plugin_sudo_add_sudo'