Add support for space-separated extras in commands

poetry/console/commands/add.py

@@ -98,6 +98,13 @@ If you do not specify a version constraint, poetry will choose a suitable one ba
                 constraint['allows-prereleases'] = True
 
             if self.option('extras'):
+                extras = []
+                for extra in self.option('extras'):
+                    if ' ' in extra:
+                        extras += [e.strip() for e in extra.split(' ')]
+                    else:
+                        extras.append(extra)
+
                 constraint['extras'] = self.option('extras')
 
             if self.option('python'):

poetry/console/commands/debug/resolve.py

@@ -41,7 +41,14 @@ class DebugResolveCommand(Command):
             dependencies = []
             for name, constraint in requirements.items():
                 dep = Dependency(name, constraint)
-                for ex in self.option('extras'):
+                extras = []
+                for extra in self.option('extras'):
+                    if ' ' in extra:
+                        extras += [e.strip() for e in extra.split(' ')]
+                    else:
+                        extras.append(extra)
+
+                for ex in extras:
                     dep.extras.append(ex)
 
                 dependencies.append(dep)

poetry/console/commands/install.py

@@ -36,7 +36,14 @@ exist it will look for <comment>pyproject.toml</> and do the same.
             self.poetry.pool
         )
 
-        installer.extras(self.option('extras'))
+        extras = []
+        for extra in self.option('extras'):
+            if ' ' in extra:
+                extras += [e.strip() for e in extra.split(' ')]
+            else:
+                extras.append(extra)
+
+        installer.extras(extras)
         installer.dev_mode(not self.option('no-dev'))
         installer.develop(self.option('develop'))
         installer.dry_run(self.option('dry-run'))