trying to add brew cask reinstall

README.md

@@ -315,6 +315,7 @@ The following rules are enabled by default on specific platforms only:
 * `apt_list_upgradable` – helps you run `apt list --upgradable` after `apt update`;
 * `apt_upgrade` – helps you run `apt upgrade` after `apt list --upgradable`;
 * `brew_cask_dependency` – installs cask dependencies;
+* `brew_cask_reinstall` &ndash; turns `brew cask install <formula>` into `brew cask reinstall <formula>`;
 * `brew_install` &ndash; fixes formula name for `brew install`;
 * `brew_reinstall` &ndash; turns `brew install <formula>` into `brew reinstall <formula>`;
 * `brew_link` &ndash; adds `--overwrite --dry-run` if linking fails;

tests/rules/test_brew_cask_reinstall.py

@@ -0,0 +1,28 @@
+import pytest
+from thefuck.types import Command
+from thefuck.rules.brew_cask_reinstall import get_new_command, match
+
+
+output = ("Warning: Cask 'thefuck' is already installed.\n\nTo "
+          "re-install thefuck, run\n  `brew cask reinstall thefuck`")
+
+
+def test_match():
+    command = Command('brew cask install thefuck', output)
+    assert match(command)
+
+
+@pytest.mark.parametrize('script', [
+    'brew cask reinstall thefuck',
+    'brew install foo'])
+def test_not_match(script):
+    assert not match(Command(script, ''))
+
+
+@pytest.mark.parametrize('script, formula, ', [
+    ('brew install foo', 'foo'),
+    ('brew install bar zap', 'bar zap')])
+def test_get_new_command(script, formula):
+    command = Command(script, output)
+    new_command = 'brew cask reinstall {}'.format(formula)
+    assert get_new_command(command) == new_command

thefuck/rules/brew_cask_reinstall.py

@@ -0,0 +1,17 @@
+import re
+from thefuck.utils import for_app
+
+
+warning_regex = re.compile(r'Warning: Cask \'(?:.(?!is ))+\' is already installed.\n\n')
+message_regex = re.compile(r'To re-install (?:(?!, ).)+, run\n  `brew cask reinstall [^`]+`')
+
+
+@for_app('brew', at_least=2)
+def match(command):
+    return ('cask install' in command.script
+            and warning_regex.search(command.output)
+            and message_regex.search(command.output))
+
+
+def get_new_command(command):
+    return command.script.replace('install', 'reinstall')