From 1d44157241bd1b310c143faa0f269e90757731cc Mon Sep 17 00:00:00 2001
From: Simon Ruderich <simon@ruderich.org>
Date: Wed, 4 Jul 2012 20:48:51 +0200
Subject: [PATCH] vimrc: Show a message when viewing the first buffer again
 with gb.

---
 vimrc | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/vimrc b/vimrc
index d4f3939..41dd812 100644
--- a/vimrc
+++ b/vimrc
@@ -442,6 +442,33 @@ nmap - <C-B>
 " (2010-05-16 18:38 CEST) for this idea.
 nnoremap <silent> gb :bnext<CR>
 nnoremap <silent> gB :bprevious<CR>
+if has('eval')
+    " But when starting again at the first buffer, print a warning which
+    " reminds me that I've already seen that buffer.
+    function! s:NextBuffer()
+        " Are we currently on the last buffer and moving to the first?
+        let l:last_buffer = 0
+        if bufnr('%') == bufnr('$') && bufnr('$') > 1
+            let l:last_buffer = 1
+        endif
+
+        " Go to the next buffer.
+        if !l:last_buffer
+            bnext
+
+        " Go to the first buffer, silent is necessary or the following message
+        " won't be displayed because it's overwritten by the status message
+        " displayed when entering a buffer.
+        else
+            silent bnext
+
+            echohl WarningMsg
+            echo 'Starting again at first buffer.'
+            echohl None
+        endif
+    endfunction
+    nnoremap <silent> gb :call <SID>NextBuffer()<CR>
+endif
 
 " Fast access to buffers.
 nnoremap <silent> <Leader>1 :1buffer<CR>
-- 
2.45.2