move settings into ftplugin file

ftplugin/fsharp.vim

@@ -1,6 +1,6 @@
 " Vim filetype plugin
 " Language:     F#
-" Last Change:  Fri 18 May 2012 01:59:07 AM CEST
+" Last Change:  Sun 31 Aug 2014 06:55:32 PM CEST
 " Maintainer:   Gregor Uhlenheuer <kongo2002@googlemail.com>
 
 if exists('b:did_ftplugin')
@@ -39,8 +39,13 @@ setl formatoptions=croql
 setl commentstring=(*%s*)
 setl comments=s0:*\ -,m0:*\ \ ,ex0:*),s1:(*,mb:*,ex:*),:\/\/\/,:\/\/
 
+" tab/indentation settings
+setl expandtab
+setl nolisp
+setl nosmartindent
+
 " make ftplugin undo-able
-let b:undo_ftplugin = 'setl fo< cms< com< fdm<'
+let b:undo_ftplugin = 'setl fo< cms< com< fdm< et< si< lisp<'
 
 let s:candidates = [ 'fsi',
             \ 'fsi.exe',

indent/fsharp.vim

@@ -4,11 +4,13 @@
 "               Mike Leary           <leary@nwlink.com>
 "               Markus Mottl         <markus.mottl@gmail.com>
 "               Rudi Grinberg        <rudi.grinberg@gmail.com>
+"               Gregor Uhlenheuer    <kongo2002@gmail.com>
 " Last Change:  2013 Jun 29
 "               2005 Jun 25 - Fixed multiple bugs due to 'else\nreturn ind' working
 "               2005 May 09 - Added an option to not indent OCaml-indents specially (MM)
 "               2013 June   - commented textwidth (Marc Weber)
 "               2014 August - Ported to F#
+"               2014 August - F# specific cleanup
 "
 " Marc Weber's comment: This file may contain a lot of (very custom) stuff
 " which eventually should be moved somewhere else ..
@@ -20,11 +22,8 @@ if exists("b:did_indent")
 endif
 let b:did_indent = 1
 
-setlocal expandtab
 setlocal indentexpr=GetFsharpIndent()
 setlocal indentkeys+=0=and,0=class,0=constraint,0=done,0=else,0=end,0=exception,0=external,0=if,0=in,0=include,0=inherit,0=let,0=method,0=open,0=then,0=type,0=val,0=with,0;;,0>\],0\|\],0>},0\|,0},0\],0)
-setlocal nolisp
-setlocal nosmartindent
 
 " Only define the function once.
 if exists("*GetFsharpIndent")