Added pacman invalid option rule

README.md

@@ -321,6 +321,7 @@ The following rules are enabled by default on specific platforms only:
 * `dnf_no_such_command` – fixes mistyped DNF commands;
 * `nixos_cmd_not_found` – installs apps on NixOS;
 * `pacman` – installs app with `pacman` if it is not installed (uses `yay` or `yaourt` if available);
+* `pacman_invalid_option` – replaces lowercase pacman options with uppercase.
 * `pacman_not_found` – fixes package name with `pacman`, `yay` or `yaourt`.
 
 The following commands are bundled with *The Fuck*, but are not enabled by
@@ -352,8 +353,8 @@ Your rule should not change `Command`.
 
 **Rules api changed in 3.0:** To access a rule's settings, import it with
  `from thefuck.conf import settings`
-  
-`settings` is a special object assembled from `~/.config/thefuck/settings.py`, 
+
+`settings` is a special object assembled from `~/.config/thefuck/settings.py`,
 and values from env ([see more below](#settings)).
 
 A simple example rule for running a script with `sudo`:

thefuck/rules/pacman_invalid_option.py

@@ -0,0 +1,14 @@
+from thefuck.specific.archlinux import archlinux_env
+import re
+
+
+def match(command):
+    return "error: invalid option" in command.output
+
+
+def get_new_command(command):
+    opt = re.findall(r" -[dqrstuf]", command.script)[0]
+    return re.sub(opt, opt.upper(), command.script)
+
+
+enabled_by_default=true, pacman = archlinux_env()