Introduce "local" scope in evaluate-commands

When using `eval` a new scope named 'local' gets pushed for the
whole evaluation, this makes it possible to temporarily set
an option/hook/alias...

Local scopes nest so nested evals do work as expected.

Remove the now trivial with-option command

1 files changed, 2 insertions, 0 deletions

diff --git a/src/hook_manager.hh b/src/hook_manager.hh
index 29baa033..228a4f23 100644
--- a/src/hook_manager.hh
+++ b/src/hook_manager.hh
@@ -123,6 +123,8 @@ public:
     HookManager(HookManager& parent);
     ~HookManager();
 
+    void reparent(HookManager& parent) { m_parent = &parent; }
+
     void add_hook(Hook hook, String group, HookFlags flags,
                   Regex filter, String commands, Context& context);
     void remove_hooks(const Regex& regex);