vimrc: Fix compatibility for older Vim versions.

[config/dotfiles.git] / vimrc

diff --git a/vimrc b/vimrc
index 3277112936114a2c693e4ec0c11b6dc566ee75e3..bc126c8e63726739a3a235acf91c3810f4da7f76 100644 (file)
--- a/vimrc
+++ b/vimrc
@@ -51,7 +51,7 @@ set runtimepath^=~/.vim,~/.vim/runtime
 
 " Don't store swap files in the same directory as the edited file.
 set directory-=.
-" But store them in ~/.tmp if available.
+" But store them in ~/.tmp or ~/tmp (already set by default) if available.
 set directory^=~/.tmp
 
 " Disable modelines as they may cause security problems. Instead use
@@ -150,7 +150,7 @@ set smartcase
 
 " Activate spell checking, use English as default.
 if exists('+spell') && has('syntax')
-    " But not when diffing as spell checking is distracting in this case.
+    " But not when diffing because spell checking is distracting in this case.
     if !&diff
         set spell
     endif
@@ -525,7 +525,7 @@ if has('syntax')
                   \ '|     call matchadd("Todo", l:x)'
                   \ '| endfor'
 
-" Highlight unicode whitespace which is no normal whitespace (0x20).
+" Highlight Unicode whitespace which is no normal whitespace (0x20).
             let l:spaces = ['00a0', '1680', '180e', '2000', '2001', '2002',
                           \ '2003', '2004', '2005', '2006', '2007', '2008',
                           \ '2009', '200a', '200b', '200c', '200d', '202f',
@@ -641,8 +641,11 @@ if has('autocmd')
 " Don't ignore case while in insert mode, but ignore case in all other modes.
 " This causes <C-N>/<C-P> to honor the case and thus only complete matching
 " capitalization. But while searching (/) 'ignorecase' is used.
-        autocmd InsertEnter * set noignorecase
-        autocmd InsertLeave * set   ignorecase
+" InsertEnter/InsertLeave doesn't exist in older Vims.
+        if exists('##InsertEnter') && exists('##InsertLeave')
+            autocmd InsertEnter * set noignorecase
+            autocmd InsertLeave * set   ignorecase
+        endif
 
 " AFTER/FTPLUGIN AUTO COMMANDS