Make `edit` command work fine when running from an empty context

This way, the kind of context we get from a piped command allows
for opening a buffer and working with it directly.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/context.cc b/src/context.cc
index ef2a999f..da23aac1 100644
--- a/src/context.cc
+++ b/src/context.cc
@@ -159,10 +159,10 @@ void JumpList::forget_buffer(Buffer& buffer)
 
 void Context::change_buffer(Buffer& buffer)
 {
-    if (&buffer == &this->buffer())
+    if (has_buffer() and &buffer == &this->buffer())
         return;
 
-    if (m_edition_level > 0)
+    if (has_buffer() and m_edition_level > 0)
        this->buffer().commit_undo_group();
 
     m_window.reset();