Add automatic completion display in prompt mode

Controlled by the autoshowcompl option
Completers now take a CompletionFlag parameter, used to specify
we want fast completion (tag completion can be slow, we do not
want to run it if not explicitely wanted by the user).

1 files changed, 8 insertions, 3 deletions

diff --git a/src/completion.hh b/src/completion.hh
index c833e2b4..bd89ea4c 100644
--- a/src/completion.hh
+++ b/src/completion.hh
@@ -26,10 +26,15 @@ struct Completions
         : start(start), end(end) {}
 };
 
-typedef std::function<Completions (const Context&,
-                                   const String&, ByteCount)> Completer;
+enum class CompletionFlags
+{
+    None,
+    Fast
+};
+using Completer = std::function<Completions (const Context&, CompletionFlags,
+                                             const String&, ByteCount)>;
 
-inline Completions complete_nothing(const Context& context,
+inline Completions complete_nothing(const Context& context, CompletionFlags,
                                     const String&, ByteCount cursor_pos)
 {
     return Completions(cursor_pos, cursor_pos);