MFC: r174533, r182605:

+ Open ctty in non-blocking mode to avoid hangs during open and close(waiting
  for the port to drain).
+ Handle "*" as a priority properly.
+ Test what is free'ed.
+ Dynamically determine length vs. hardcoding it.
+ Free the previous message buffer (f_prevline) only after logging all the
  messages and just before the process exit.  Also check f_prevline for NULL
  before using it.
+ The time displayed is not synchornized with the other log destinations.
+ Fix a comment.
+ Remove extraneous NULL pointer check - the pointer is guaranteed to be
  non-NULL.

tools/tools/editing/freebsd.vim

@@ -0,0 +1,68 @@
+" Copyright (c) 2007-2008 Sean C. Farley <scf@FreeBSD.org>
+" All rights reserved.
+"
+" Redistribution and use in source and binary forms, with or without
+" modification, are permitted provided that the following conditions
+" are met:
+" 1. Redistributions of source code must retain the above copyright
+"    notice, this list of conditions and the following disclaimer,
+"    without modification, immediately at the beginning of the file.
+" 2. Redistributions in binary form must reproduce the above copyright
+"    notice, this list of conditions and the following disclaimer in the
+"    documentation and/or other materials provided with the distribution.
+"
+" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+"
+" $FreeBSD$
+
+" This is a plugin for Vim (tested with Vim v7.1) to follow the FreeBSD style(9)
+" indentation.  It registers a macro (see below) for changing a buffer's
+" indentation rules but does not change the indentation of existing code.
+
+" Load only once.
+if exists('loaded_FreeBSD')
+    finish
+endif
+let loaded_FreeBSD = 1
+
+
+" FreeBSD mapping to switch current buffer to style(9).  This is generally '\f'.
+nmap <silent> <Leader>f :call FreeBSD_Style()<CR>
+
+
+" Ignore indents caused by parentheses in FreeBSD style.
+function! IgnoreParenIndent()
+    let indent = cindent(v:lnum)
+
+    if indent > 4000
+        if cindent(v:lnum - 1) > 4000
+            return indent(v:lnum - 1)
+        else
+            return indent(v:lnum - 1) + 4
+        endif
+    else
+        return (indent)
+    endif
+endfun
+
+
+" Follow the FreeBSD style(9).
+function! FreeBSD_Style()
+    setlocal cindent
+    setlocal cinoptions=(4200,u4200,+0.5s,*500,:0,t0,U4200
+    setlocal indentexpr=IgnoreParenIndent()
+    setlocal indentkeys=0{,0},0),:,0#,!^F,o,O,e
+    setlocal noexpandtab
+    setlocal shiftwidth=8
+    setlocal tabstop=8
+    setlocal textwidth=80
+endfun