#579: Add missing_space_before_subcommand rule

thefuck/rules/missing_space_before_subcommand.py

@@ -0,0 +1,18 @@
+from thefuck.utils import get_all_executables, memoize, which
+
+
+@memoize
+def _get_executable(script_part):
+    for executable in get_all_executables():
+        if script_part.startswith(executable):
+            return executable
+
+
+def match(command):
+    return (not which(command.script_parts[0])
+            and _get_executable(command.script_parts[0]))
+
+
+def get_new_command(command):
+    executable = _get_executable(command.script_parts[0])
+    return command.script.replace(executable, u'{} '.format(executable), 1)