#1133: Match commands with path prefixes in @for_app decorations

* Resolve paths before checking app identity

Commands entered with a path do not match is_app. I encountered this
when working with a test for the rm_dir rule. This rule did not use the
@for_app decorator, but when I migrated it, the test for "./bin/hdfs.."
failed because 'hdfs' was recognized as a command, while "./bin/hdfs"
was not.

This commit addresses the false negative by resolving path names in the
command, via os.path.basename.

* Remove paths from for_app invocations in rules

I presume that the `./` in `./gradlew` was used here because thefuck
would not find an app match on just `gradlew`, and thus no fucks would
be given on the most common and idiomatic way of invoking gradlew.

After 8faf9b1, thefuck does not distinguish between commands with
paths and those without. Therefore, the tests for this rule are now
broken because thefuck strips paths from the _user_'s command, but not
from the for_app decoration.

This commit addresses that problem by changing the for_app decoration to
this rule.

tests/test_utils.py

@@ -146,6 +146,8 @@ def test_get_all_matched_commands(stderr, result):
 
 @pytest.mark.usefixtures('no_memoize')
 @pytest.mark.parametrize('script, names, result', [
+    ('/usr/bin/git diff', ['git', 'hub'], True),
+    ('/bin/hdfs dfs -rm foo', ['hdfs'], True),
     ('git diff', ['git', 'hub'], True),
     ('hub diff', ['git', 'hub'], True),
     ('hg diff', ['git', 'hub'], False)])
@@ -155,6 +157,8 @@ def test_is_app(script, names, result):
 
 @pytest.mark.usefixtures('no_memoize')
 @pytest.mark.parametrize('script, names, result', [
+    ('/usr/bin/git diff', ['git', 'hub'], True),
+    ('/bin/hdfs dfs -rm foo', ['hdfs'], True),
     ('git diff', ['git', 'hub'], True),
     ('hub diff', ['git', 'hub'], True),
     ('hg diff', ['git', 'hub'], False)])

thefuck/rules/gradle_no_task.py

@@ -5,7 +5,7 @@
 regex = re.compile(r"Task '(.*)' (is ambiguous|not found)")
 
 
-@for_app('gradle', './gradlew')
+@for_app('gradle', 'gradlew')
 def match(command):
     return regex.findall(command.output)
 

thefuck/utils.py

@@ -180,7 +180,7 @@ def is_app(command, *app_names, **kwargs):
         raise TypeError("got an unexpected keyword argument '{}'".format(kwargs.keys()))
 
     if len(command.script_parts) > at_least:
-        return command.script_parts[0] in app_names
+        return os.path.basename(command.script_parts[0]) in app_names
 
     return False