From e00c81171248268cd7f61c0a9e139a8065b48eed Mon Sep 17 00:00:00 2001
From: Maxime Coste <frrrwww@gmail.com>
Date: Tue, 14 Aug 2012 14:26:36 +0200
Subject: [PATCH] complete_buffername try regex matching when prefix matching
 does not work

---
 src/buffer_manager.cc | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/buffer_manager.cc b/src/buffer_manager.cc
index 9aba924d..c5235cb1 100644
--- a/src/buffer_manager.cc
+++ b/src/buffer_manager.cc
@@ -3,6 +3,7 @@
 #include "assert.hh"
 #include "buffer.hh"
 #include "exception.hh"
+#include "regex.hh"
 
 namespace Kakoune
 {
@@ -62,6 +63,17 @@ CandidateList BufferManager::complete_buffername(const String& prefix,
         if (name.substr(0, real_prefix.length()) == real_prefix)
             result.push_back(name);
     }
+    // no prefix completion found, check regex matching
+    if (result.empty())
+    {
+        Regex ex(real_prefix.begin(), real_prefix.end());
+        for (auto& buffer : m_buffers)
+        {
+            const String& name = buffer->name();
+            if (boost::regex_search(name.begin(), name.end(), ex))
+                result.push_back(name);
+        }
+    }
     return result;
 }