From d9f6041145fbc121fbaadc056a6e7853246bf06f Mon Sep 17 00:00:00 2001
From: Iain Patterson <me@iain.cx>
Date: Wed, 20 Jun 2007 08:47:11 +0000
Subject: [PATCH] Trying to handle multiple toggles of number mode in split
 windows. Show numbers in blue. Set consistent width of numbers column.

git-svn-id: https://svn.cambridge.iain.cx/profile/trunk@54 6be0d1a5-5cfe-0310-89b6-964be062b18b
---
 .vimrc | 38 +++++++++++++++++++++++++++++++++++---
 1 file changed, 35 insertions(+), 3 deletions(-)

diff --git a/.vimrc b/.vimrc
index e803032..c594723 100755
--- a/.vimrc
+++ b/.vimrc
@@ -1,6 +1,8 @@
 """"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
 " $Id$
 """"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
+" Multi-version vimrc compatible with version 4 and above.
+""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
 
 " Note that "if <condition> | call Something() | endif" syntax is unsupported 
 " in Vim 4 so we write all our functions out the long way.  It does work in 
@@ -217,6 +219,13 @@ endif
 if version >= "600"
 version 6.0
 
+" Allow room for numbers.
+se numberwidth=5
+
+" Track changing number mode.
+let g:numbercols=&columns
+let g:numberchanges=0
+
 " Less intrusive syntax highlighting.
 syn enable
 
@@ -237,6 +246,9 @@ endif
 " Status bar matches the colour.
 highlight StatusLine guifg=white guibg=blue ctermbg=white ctermfg=blue
 
+" Numbers in blue.
+highlight LineNr term=underline cterm=bold guifg=blue ctermfg=blue
+
 " Make * and # work the way you expect in visual mode.
 vnoremap * y/\V<C-R>=substitute(escape(@@,"/\\"),"\n","\\\\n","ge")<CR><CR>
 vnoremap # y?\V<C-R>=substitute(escape(@@,"?\\"),"\n","\\\\n","ge")<CR><CR>
@@ -267,26 +279,46 @@ fun! Cycle_HexStatusLine()
   call Show_StatusLine()
 endfun
 
+" Cycle between number mode.
+" FIXME: Toggling in a split window doesn't work properly.  We need to track 
+" the number of windows and number modes.  Something for later...
 fun! Cycle_Number()
   if &number
     " Restore width.
     if &t_WS =~ '^.'
-      let &columns=g:numbercols
+      " Track changes.
+      let g:numberchanges=g:numberchanges-1
+      if g:numberchanges<0
+        g:numberchanges=0
+      endif
+
+      " Change size back if this was the last window.
+      if g:numberchanges == 0
+        let &columns=g:numbercols
+      endif
     endif
     set nonumber
   else
     " Save width between number toggling.
     if &t_WS =~ '^'
-      let g:numbercols=&columns
-      let &columns=&columns+5
+      " Expand if this was the first change.
+      if g:numberchanges == 0
+        let g:numbercols=&columns
+        let &columns=&columns+&numberwidth
+      endif
+
+      " Track changes.
+      let g:numberchanges=g:numberchanges+1
     endif
     set number
   endif
 endfun
 
+" Toggle case-sensitivity.
 fun! Invert_Case()
   let &ic = ! &ic
 endfun
+
 " We'll use Q for various commands.  Unmap it.
 map Q <Nop>
 
-- 
2.20.1