ftplugin: use setlocal and let &l:.

Author: congma

README.md

@@ -1,16 +1,15 @@
 ## vim-checkimpcont ##
 
 Vim plugin for [checkimpcont][cic], a tool that detects possibly misleading
-string literal concatenations in Python-2.x sources
+string literal concatenations in Python-2.x sources.
 
 
 ## Installation ##
 
 1.  First, please install the Python script [checkimpcont.py][cic].
 2.  After that, put the Vim plugin script in your `.vim/ftplugin/python`
     directory.
-3.  Alternatively, you can also use [`pathogen`][pathogen] to install the
-    plugin.
+3.  Alternatively, you can use [`pathogen`][pathogen] to install the plugin.
 
 
 ## Usage ##

ftplugin/python/checkimpcont.vim

@@ -29,12 +29,12 @@ function! <SID>CheckImpCont()
     cclose
     let l:grepformat_save = &grepformat
     let l:grepprg_save = &grepprg
-    set grepformat=%-P[%f],%A%l:%c:\ %t%.%#:\ %m,%-C%s,%-C%p^
-    set grepprg=(echo\ ['%'];checkimpcont.py\ '%')
+    setlocal grepformat=%-P[%f],%A%l:%c:\ %t%.%#:\ %m,%-C%s,%-C%p^
+    setlocal grepprg=(echo\ ['%'];checkimpcont.py\ '%')
     if &readonly == 0 | update | endif
     silent grep!
-    let &grepformat = l:grepformat_save
-    let &grepprg = l:grepprg_save
+    let &l:grepformat = l:grepformat_save
+    let &l:grepprg = l:grepprg_save
     belowright cwindow
     set nolazyredraw
     redraw!