#611: Allow to configure alias automatically by calling fuck twice

thefuck/shells/bash.py

@@ -45,8 +45,7 @@ class Bash(Generic):
         else:
             config = 'bash config'
 
-        return {
-            'content': 'eval $(thefuck --alias)',
-            'path': config,
-            'reload': u'source {}'.format(config),
-        }
+        return self._create_shell_configuration(
+            content='eval $(thefuck --alias)',
+            path=config,
+            reload=u'source {}'.format(config))

thefuck/shells/fish.py

@@ -67,11 +67,10 @@ class Fish(Generic):
         return u'; and '.join(commands)
 
     def how_to_configure(self):
-        return {
-            'content': r"eval (thefuck --alias | tr '\n' ';')",
-            'path': '~/.config/fish/config.fish',
-            'reload': 'fish',
-        }
+        return self._create_shell_configuration(
+            content=r"eval (thefuck --alias | tr '\n' ';')",
+            path='~/.config/fish/config.fish',
+            reload='fish')
 
     def put_to_history(self, command):
         try:

thefuck/shells/generic.py

@@ -2,8 +2,14 @@ import io
 import os
 import shlex
 import six
+from collections import namedtuple
 from ..utils import memoize
 from ..conf import settings
+from ..system import Path
+
+
+ShellConfiguration = namedtuple('ShellConfiguration', (
+    'content', 'path', 'reload', 'can_configure_automatically'))
 
 
 class Generic(object):
@@ -116,3 +122,10 @@ class Generic(object):
                 'shift', 'shopt', 'source', 'suspend', 'test', 'times', 'trap',
                 'type', 'typeset', 'ulimit', 'umask', 'unalias', 'unset',
                 'until', 'wait', 'while']
+
+    def _create_shell_configuration(self, content, path, reload):
+        return ShellConfiguration(
+            content=content,
+            path=path,
+            reload=reload,
+            can_configure_automatically=Path(path).expanduser().exists())

thefuck/shells/powershell.py

@@ -1,4 +1,4 @@
-from .generic import Generic
+from .generic import Generic, ShellConfiguration
 
 
 class Powershell(Generic):
@@ -18,8 +18,8 @@ class Powershell(Generic):
         return u' -and '.join('({0})'.format(c) for c in commands)
 
     def how_to_configure(self):
-        return {
-            'content': 'iex "thefuck --alias"',
-            'path': '$profile',
-            'reload': '& $profile',
-        }
+        return ShellConfiguration(
+            content='iex "thefuck --alias"',
+            path='$profile',
+            reload='& $profile',
+            can_configure_automatically=False)

thefuck/shells/tcsh.py

@@ -31,8 +31,7 @@ class Tcsh(Generic):
         return u'#+{}\n{}\n'.format(int(time()), command_script)
 
     def how_to_configure(self):
-        return {
-            'content': 'eval `thefuck --alias`',
-            'path': '~/.tcshrc',
-            'reload': 'tcsh',
-        }
+        return self._create_shell_configuration(
+            content='eval `thefuck --alias`',
+            path='~/.tcshrc',
+            reload='tcsh')

thefuck/shells/zsh.py

@@ -45,8 +45,7 @@ class Zsh(Generic):
             return ''
 
     def how_to_configure(self):
-        return {
-            'content': 'eval $(thefuck --alias)',
-            'path': '~/.zshrc',
-            'reload': 'source ~/.zshrc',
-        }
+        return self._create_shell_configuration(
+            content='eval $(thefuck --alias)',
+            path='~/.zshrc',
+            reload='source ~/.zshrc')