Add jump list support to context

jump forward is bound to ctrl-i
jump backward is bound to ctrl-o

switch buffers or jumping somewhere in the buffer push the current
position to the jump list.

when a buffer is deleted, all entries referencing it in jump lists
are erased.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/client_manager.cc b/src/client_manager.cc
index 07322fed..c2a7dcce 100644
--- a/src/client_manager.cc
+++ b/src/client_manager.cc
@@ -67,6 +67,8 @@ void ClientManager::ensure_no_client_uses_buffer(Buffer& buffer)
 {
     for (auto& client : m_clients)
     {
+        client.context->forget_jumps_to_buffer(buffer);
+
         if (&client.context->buffer() != &buffer)
             continue;