Add rule for restic

* Detect typos recognized by restic and add fixed command for it
* Add test cases for the restic rule
* Update README.md

README.md

@@ -316,6 +316,7 @@ following rules are enabled by default:
 * `react_native_command_unrecognized` – fixes unrecognized `react-native` commands;
 * `remove_shell_prompt_literal` – remove leading shell prompt symbol `$`, common when copying commands from documentations;
 * `remove_trailing_cedilla` – remove trailing cedillas `ç`, a common typo for European keyboard layouts;
+* `restic` – fixes restic commands;
 * `rm_dir` – adds `-rf` when you try to remove a directory;
 * `scm_correction` – corrects wrong scm like `hg log` to `git log`;
 * `sed_unterminated_s` – adds missing '/' to `sed`'s `s` commands;

tests/rules/test_restic_typo.py

@@ -0,0 +1,22 @@
+import pytest
+
+from thefuck.rules.restic_typo import match, get_new_command
+from thefuck.types import Command
+
+
+@pytest.fixture
+def mistype_suggestion():
+    return """
+unknown command "snapshot" for "restic"
+
+Did you mean this?
+        snapshots
+    """
+
+
+def test_match(mistype_suggestion):
+    assert match(Command('restic snapshot', mistype_suggestion))
+
+
+def test_get_new_command(mistype_suggestion):
+    assert (get_new_command(Command('restic snapshot', mistype_suggestion)) == ['restic snapshots'])

thefuck/rules/restic_typo.py

@@ -0,0 +1,14 @@
+import re
+from thefuck.utils import replace_command, for_app
+
+
+@for_app("restic")
+def match(command):
+    return (re.search('unknown command ".*" for "restic"', command.output)
+            and "Did you mean this" in command.output)
+
+
+def get_new_command(command):
+    broken_cmd = re.findall(r"(?<=unknown command \")([a-z\-]+)", command.output)[0]
+    correct_cmd = re.findall(r"([a-z\-]+)", command.output)[-1]
+    return replace_command(command, broken_cmd, [correct_cmd])