File showmarks-signs.patch of Package vim-plugins

From e752d376f3566b9ca646914d148259097fdc713a Mon Sep 17 00:00:00 2001
From: Tobias Gehring <tobias.gehring@fysik.dtu.dk>
Date: Sat, 4 Oct 2014 17:37:23 +0200
Subject: [PATCH] vim doesn't allow signs at the first line any more

---
 plugin/showmarks.vim | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugin/showmarks.vim b/plugin/showmarks.vim
index affd240..80d9ab1 100644
--- a/plugin/showmarks.vim
+++ b/plugin/showmarks.vim
@@ -372,7 +372,7 @@ fun! s:ShowMarks()
 					exe 'hi link '.s:ShowMarksDLink{nm}.nm.' '.b:ShowMarksLink{nm}
 				endif
 				let mark_at{ln} = nm
-				if !exists('b:placed_'.nm) || b:placed_{nm} != ln
+				if ln > 0 && (!exists('b:placed_'.nm) || b:placed_{nm} != ln)
 					exe 'sign unplace '.id.' buffer='.winbufnr(0)
 					exe 'sign place '.id.' name=ShowMark'.nm.' line='.ln.' buffer='.winbufnr(0)
 					let b:placed_{nm} = ln