Added quotation marks rule

README.md

@@ -178,6 +178,7 @@ using the matched rule and runs it. Rules enabled by default are as follows:
 * `open` – prepends `http` to address passed to `open`;
 * `pip_unknown_command` – fixes wrong pip commands, for example `pip instatl/pip install`;
 * `python_command` – prepends `python` when you trying to run not executable/without `./` python script;
+* `quotation_marks` – fixes uneven usage of `'` and `"` when containing args'
 * `rm_dir` – adds `-rf` when you trying to remove directory;
 * `sl_ls` – changes `sl` to `ls`;
 * `ssh_known_hosts` – removes host from `known_hosts` on warning;

tests/rules/test_quotation_marks.py

@@ -0,0 +1,19 @@
+import pytest
+from thefuck.rules.quotation_marks import match, get_new_command
+from tests.utils import Command
+
+
+@pytest.mark.parametrize('command', [
+	Command(script="git commit -m \'My Message\""),
+    Command(script="git commit -am \"Mismatched Quotation Marks\'"),
+    Command(script="echo \"hello\'")])
+def test_match(command):
+	assert match(command, None)
+
+
+@pytest.mark.parametrize('command, new_command', [
+	(Command("git commit -m \'My Message\""), "git commit -m \"My Message\""),
+    (Command("git commit -am \"Mismatched Quotation Marks\'"), "git commit -am \"Mismatched Quotation Marks\""),
+    (Command("echo \"hello\'"), "echo \"hello\"")])
+def test_get_new_command(command, new_command):
+	assert get_new_command(command, None) == new_command

thefuck/rules/quotation_marks.py

@@ -0,0 +1,14 @@
+# Fixes careless " and ' usage
+# 
+# Example:
+# > git commit -m 'My Message"
+# 
+#
+# 
+
+def match(command, settings):
+    return ('\'' in command.script
+            and '\"' in command.script)
+
+def get_new_command(command, settings):
+    return command.script.replace ('\'', '\"')