Add brew_reinstall rule (#816)

Replaces install with reinstall when a package is already installed.

README.md

@@ -305,6 +305,7 @@ The following rules are enabled by default on specific platforms only:
 * `apt_upgrade` – helps you run `apt upgrade` after `apt list --upgradable`;
 * `brew_cask_dependency` – installs cask dependencies;
 * `brew_install` – 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;
 * `brew_uninstall` &ndash; adds `--force` to `brew uninstall` if multiple versions were installed;
 * `brew_unknown_command` &ndash; fixes wrong brew commands, for example `brew docto/brew doctor`;

tests/rules/test_brew_reinstall.py

@@ -0,0 +1,28 @@
+import pytest
+from thefuck.types import Command
+from thefuck.rules.brew_reinstall import get_new_command, match
+
+
+output = ("Warning: thefuck 9.9 is already installed and up-to-date\nTo "
+          "reinstall 9.9, run `brew reinstall thefuck`")
+
+
+def test_match():
+    command = Command('brew install thefuck', output)
+    assert match(command)
+
+
+@pytest.mark.parametrize('script', [
+    'brew 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 reinstall {}'.format(formula)
+    assert get_new_command(command) == new_command

thefuck/rules/brew_reinstall.py

@@ -0,0 +1,19 @@
+import re
+from thefuck.utils import for_app
+
+
+warning_regex = re.compile(r'Warning: (?:.(?!is ))+ is already installed and '
+                           r'up-to-date')
+message_regex = re.compile(r'To reinstall (?:(?!, ).)+, run `brew reinstall '
+                           r'[^`]+`')
+
+
+@for_app('brew', at_least=2)
+def match(command):
+    return ('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')