diff --git a/runtime/plugin/README.txt b/runtime/plugin/README.txt
index 37e22e5..68f285e 100644
--- a/runtime/plugin/README.txt
+++ b/runtime/plugin/README.txt
@@ -5,6 +5,7 @@
 
 getscriptPlugin.vim  get latest version of Vim scripts
 gzip.vim	     edit compressed files
+logiPat.vim	     logical operators on patterns
 matchparen.vim	     highlight paren matching the one under the cursor
 netrwPlugin.vim	     edit files over a network and browse (remote) directories
 rrhelper.vim	     used for --remote-wait editing
diff --git a/runtime/plugin/logiPat.vim b/runtime/plugin/logiPat.vim
new file mode 100644
index 0000000..a75d0ee
--- /dev/null
+++ b/runtime/plugin/logiPat.vim
@@ -0,0 +1,335 @@
+" LogiPat:
+"   Author:  Charles E. Campbell
+"   Date:    Mar 13, 2013
+"   Version: 3
+"   Purpose: to do Boolean-logic based regular expression pattern matching
+" Copyright:    Copyright (C) 1999-2011 Charles E. Campbell {{{1
+"               Permission is hereby granted to use and distribute this code,
+"               with or without modifications, provided that this copyright
+"               notice is copied with it. Like most anything else that's free,
+"               LogiPat.vim is provided *as is* and comes with no warranty
+"               of any kind, either expressed or implied. By using this
+"               plugin, you agree that in no event will the copyright
+"               holder be liable for any damages resulting from the use
+"               of this software.
+"
+"   Usage: {{{1
+"       :LogiPat ...
+"
+"         Boolean logic supported:
+"            () grouping operators
+"            !  not the following pattern
+"            |  logical or
+"            &  logical and
+"            "..pattern.."
+"	Example: {{{1
+"		:LogiPat !("january"|"february")
+"		  would match all strings not containing the strings january
+"		  or february
+"	GetLatestVimScripts: 1290 1 :AutoInstall: LogiPat.vim
+"
+"  Behold, you will conceive in your womb, and bring forth a son, {{{1
+"  and will call his name Jesus. He will be great, and will be
+"  called the Son of the Most High. The Lord God will give him the
+"  throne of his father, David, and he will reign over the house of
+"  Jacob forever. There will be no end to his kingdom. (Luke 1:31-33 WEB)
+
+" ---------------------------------------------------------------------
+" Load Once: {{{1
+if &cp || exists("loaded_logipat")
+ finish
+endif
+let g:loaded_LogiPat = "v3"
+let s:keepcpo        = &cpo
+set cpo&vim
+"DechoRemOn
+
+" ---------------------------------------------------------------------
+" Public Interface: {{{1
+com!        -nargs=* LogiPat		call   LogiPat(<q-args>,1)
+silent! com -nargs=* LP				call   LogiPat(<q-args>,1)
+com!        -nargs=+ ELP			echomsg   LogiPat(<q-args>)
+com!        -nargs=+ LogiPatFlags	let  s:LogiPatFlags="<args>"
+silent! com -nargs=+ LPF			let  s:LogiPatFlags="<args>"
+
+" =====================================================================
+" Functions: {{{1
+
+" ---------------------------------------------------------------------
+" LogiPat: this function interprets the boolean-logic pattern {{{2
+fun! LogiPat(pat,...)
+"  call Dfunc("LogiPat(pat<".a:pat.">)")
+
+  " LogiPat(pat,dosearch)
+  if a:0 > 0
+   let dosearch= a:1
+  else
+   let dosearch= 0
+  endif
+
+  let s:npatstack = 0
+  let s:nopstack  = 0
+  let s:preclvl   = 0
+  let expr        = a:pat
+
+  " Lexer/Parser
+  while expr != ""
+"   call Decho("expr<".expr.">")
+
+   if expr =~ '^"'
+	" push a Pattern; accept "" as a single " in the pattern
+    let expr = substitute(expr,'^\s*"','','')
+    let pat  = substitute(expr,'^\(\%([^"]\|\"\"\)\{-}\)"\([^"].*$\|$\)','\1','')
+	let pat  = substitute(pat,'""','"','g')
+    let expr = substitute(expr,'^\(\%([^"]\|\"\"\)\{-}\)"\([^"].*$\|$\)','\2','')
+    let expr = substitute(expr,'^\s*','','')
+"    call Decho("pat<".pat."> expr<".expr.">")
+
+    call s:LP_PatPush('.*'.pat.'.*')
+
+   elseif expr =~ '^[!()|&]'
+    " push an operator
+    let op   = strpart(expr,0,1)
+    let expr = strpart(expr,strlen(op))
+	" allow for those who can't resist doubling their and/or operators
+	if op =~ '[|&]' && expr[0] == op
+     let expr = strpart(expr,strlen(op))
+	endif
+    call s:LP_OpPush(op)
+
+   elseif expr =~ '^\s'
+    " skip whitespace
+    let expr= strpart(expr,1)
+
+   else
+    echoerr "operator<".strpart(expr,0,1)."> not supported (yet)"
+    let expr= strpart(expr,1)
+   endif
+
+  endwhile
+
+  " Final Execution
+  call s:LP_OpPush('Z')
+
+  let result= s:LP_PatPop(1)
+"  call Decho("result=".result)
+
+  " sanity checks and cleanup
+  if s:npatstack > 0
+   echoerr s:npatstack." patterns left on stack!"
+   let s:npatstack= 0
+  endif
+  if s:nopstack > 0
+   echoerr s:nopstack." operators left on stack!"
+   let s:nopstack= 0
+  endif
+
+  " perform the indicated search
+  if dosearch
+   if exists("s:LogiPatFlags")
+"  call Decho("search(result<".result."> LogiPatFlags<".s:LogiPatFlags.">)")
+    call search(result,s:LogiPatFlags)
+   else
+"  call Decho("search(result<".result.">)")
+    call search(result)
+   endif
+   let @/= result
+  endif
+
+"  call Dret("LogiPat ".result)
+  return result
+endfun
+
+" ---------------------------------------------------------------------
+" s:String: Vim6.4 doesn't have string() {{{2
+func! s:String(str)
+  return "'".escape(a:str, '"')."'"
+endfunc
+
+" ---------------------------------------------------------------------
+" LP_PatPush: {{{2
+fun! s:LP_PatPush(pat)
+"  call Dfunc("LP_PatPush(pat<".a:pat.">)")
+  let s:npatstack              = s:npatstack + 1
+  let s:patstack_{s:npatstack} = a:pat
+"  call s:StackLook("patpush") "Decho
+"  call Dret("LP_PatPush : npatstack=".s:npatstack)
+endfun
+
+" ---------------------------------------------------------------------
+" LP_PatPop: pop a number/variable from LogiPat's pattern stack {{{2
+fun! s:LP_PatPop(lookup)
+"  call Dfunc("LP_PatPop(lookup=".a:lookup.")")
+  if s:npatstack > 0
+   let ret         = s:patstack_{s:npatstack}
+   let s:npatstack = s:npatstack - 1
+  else
+   let ret= "---error---"
+   echoerr "(LogiPat) invalid expression"
+  endif
+"  call s:StackLook("patpop") "Decho
+"  call Dret("LP_PatPop ".ret)
+  return ret
+endfun
+
+" ---------------------------------------------------------------------
+" LP_OpPush: {{{2
+fun! s:LP_OpPush(op)
+"  call Dfunc("LP_OpPush(op<".a:op.">)")
+
+  " determine new operator's precedence level
+  if a:op == '('
+  	let s:preclvl= s:preclvl + 10
+	let preclvl  = s:preclvl
+  elseif a:op == ')'
+  	let s:preclvl= s:preclvl - 10
+   if s:preclvl < 0
+    let s:preclvl= 0
+    echoerr "too many )s"
+   endif
+   let preclvl= s:preclvl
+  elseif a:op =~ '|'
+   let preclvl= s:preclvl + 2
+  elseif a:op =~ '&'
+   let preclvl= s:preclvl + 4
+  elseif a:op == '!'
+   let preclvl= s:preclvl + 6
+  elseif a:op == 'Z'
+   let preclvl= -1
+  else
+   echoerr "expr<".expr."> not supported (yet)"
+   let preclvl= s:preclvl
+  endif
+"  call Decho("new operator<".a:op."> preclvl=".preclvl)
+
+  " execute higher-precdence operators
+"  call Decho("execute higher-precedence operators")
+  call s:LP_Execute(preclvl)
+
+  " push new operator onto operator-stack
+"  call Decho("push new operator<".a:op."> onto stack with preclvl=".preclvl." at nopstack=".(s:nopstack+1))
+  if a:op =~ '!'
+   let s:nopstack             = s:nopstack + 1
+   let s:opprec_{s:nopstack}  = preclvl
+   let s:opstack_{s:nopstack} = a:op
+  elseif a:op =~ '|'
+   let s:nopstack             = s:nopstack + 1
+   let s:opprec_{s:nopstack}  = preclvl
+   let s:opstack_{s:nopstack} = a:op
+  elseif a:op == '&'
+   let s:nopstack             = s:nopstack + 1
+   let s:opprec_{s:nopstack}  = preclvl
+   let s:opstack_{s:nopstack} = a:op
+  endif
+
+"  call s:StackLook("oppush") "Decho
+"  call Dret("LP_OpPush : s:preclvl=".s:preclvl)
+endfun
+
+" ---------------------------------------------------------------------
+" LP_Execute: execute operators from opstack using pattern stack {{{2
+fun! s:LP_Execute(preclvl)
+"  call Dfunc("LP_Execute(preclvl=".a:preclvl.") npatstack=".s:npatstack." nopstack=".s:nopstack)
+
+  " execute all higher precedence operators
+  while s:nopstack > 0 && a:preclvl < s:opprec_{s:nopstack}
+   let op= s:opstack_{s:nopstack}
+"   call Decho("op<".op."> nop=".s:nopstack." [preclvl=".a:preclvl."] < [opprec_".s:nopstack."=".s:opprec_{s:nopstack}."]")
+
+   let s:nopstack = s:nopstack - 1
+ 
+   if     op == '!'
+    let n1= s:LP_PatPop(1)
+	call s:LP_PatPush(s:LP_Not(n1))
+ 
+   elseif op == '|'
+    let n1= s:LP_PatPop(1)
+    let n2= s:LP_PatPop(1)
+    call s:LP_PatPush(s:LP_Or(n2,n1))
+ 
+   elseif op =~ '&'
+    let n1= s:LP_PatPop(1)
+    let n2= s:LP_PatPop(1)
+    call s:LP_PatPush(s:LP_And(n2,n1))
+   endif
+ 
+"   call s:StackLook("execute") "Decho
+  endwhile
+
+"  call Dret("LP_Execute")
+endfun
+
+" ---------------------------------------------------------------------
+" LP_Not: writes a logical-not for a pattern {{{2
+fun! s:LP_Not(pat)
+"  call Dfunc("LP_Not(pat<".a:pat.">)")
+  if a:pat =~ '^\.\*' && a:pat =~ '\.\*$'
+   let pat= substitute(a:pat,'^\.\*\(.*\)\.\*$','\1','')
+   let ret= '^\%(\%('.pat.'\)\@!.\)*$'
+  else
+   let ret= '^\%(\%('.a:pat.'\)\@!.\)*$'
+  endif
+"  call Dret("LP_Not ".ret)
+  return ret
+endfun
+
+" ---------------------------------------------------------------------
+" LP_Or: writes a logical-or branch using two patterns {{{2
+fun! s:LP_Or(pat1,pat2)
+"  call Dfunc("LP_Or(pat1<".a:pat1."> pat2<".a:pat2.">)")
+  let ret= '\%('.a:pat1.'\|'.a:pat2.'\)'
+"  call Dret("LP_Or ".ret)
+  return ret
+endfun
+
+" ---------------------------------------------------------------------
+" LP_And: writes a logical-and concat using two patterns {{{2
+fun! s:LP_And(pat1,pat2)
+"  call Dfunc("LP_And(pat1<".a:pat1."> pat2<".a:pat2.">)")
+  let ret= '\%('.a:pat1.'\&'.a:pat2.'\)'
+"  call Dret("LP_And ".ret)
+  return ret
+endfun
+
+" ---------------------------------------------------------------------
+" StackLook: {{{2
+fun! s:StackLook(description)
+"  call Dfunc("StackLook(description<".a:description.">)")
+  let iop = 1
+  let ifp = 1
+"  call Decho("Pattern                       Operator")
+
+  " print both pattern and operator
+  while ifp <= s:npatstack && iop <= s:nopstack
+   let fp = s:patstack_{ifp}
+   let op = s:opstack_{iop}." (P".s:opprec_{s:nopstack}.')'
+   let fplen= strlen(fp)
+   if fplen < 30
+   	let fp= fp.strpart("                              ",1,30-fplen)
+   endif
+"   call Decho(fp.op)
+   let ifp = ifp + 1
+   let iop = iop + 1
+  endwhile
+
+  " print just pattern
+  while ifp <= s:npatstack
+   let fp  = s:patstack_{ifp}
+"   call Decho(fp)
+   let ifp = ifp + 1
+  endwhile
+
+  " print just operator
+  while iop <= s:nopstack
+   let op  = s:opstack_{iop}." (P".s:opprec_{s:nopstack}.')'
+"   call Decho("                              ".op)
+   let iop = iop + 1
+  endwhile
+"  call Dret("StackLook")
+endfun
+
+" ---------------------------------------------------------------------
+"  Cleanup And Modeline: {{{1
+let &cpo= s:keepcpo
+unlet s:keepcpo
+" vim: ts=4 fdm=marker