diff --git a/autoload/xolox/misc/list.vim b/autoload/xolox/misc/list.vim
index 8857af1..44d6b20 100644
--- a/autoload/xolox/misc/list.vim
+++ b/autoload/xolox/misc/list.vim
@@ -1,6 +1,6 @@
 " Vim auto-load script
 " Author: Peter Odding <peter@peterodding.com>
-" Last Change: March 15, 2011
+" Last Change: August 31, 2011
 " URL: http://peterodding.com/code/vim/misc/
 
 " Remove duplicate values from {list} in-place (preserves order).
@@ -20,4 +20,39 @@ function! xolox#misc#list#unique(list)
   return a:list
 endfunction
 
+" Binary insertion (more efficient than calling sort() after each insertion).
+
+function! xolox#misc#list#binsert(list, value, ...)
+  let idx = s:binsert_r(a:list, 0, len(a:list), a:value, exists('a:1') && a:1)
+  return insert(a:list, a:value, idx)
+endfunction
+
+function! s:binsert_r(list, low, high, value, ignorecase)
+  let mid = a:low + (a:high - a:low) / 2
+  if a:low == a:high
+    return a:low
+  elseif a:ignorecase ? a:value >? a:list[mid] : a:value > a:list[mid]
+    return s:binsert_r(a:list, mid + 1, a:high, a:value, a:ignorecase)
+  elseif a:ignorecase ? a:value <? a:list[mid] : a:value < a:list[mid]
+    return s:binsert_r(a:list, a:low, mid, a:value, a:ignorecase)
+  else
+    return mid
+  endif
+endfunction
+
+if 0
+  " Tests for xolox#misc#list#binsert().
+  let s:list = ['a', 'B', 'e']
+  function! s:test(value, expected)
+    call xolox#misc#list#binsert(s:list, a:value, 1)
+    if s:list != a:expected
+      call xolox#misc#msg#warn("list.vim: Test failed! Expected %s, got %s",
+            \ string(a:expected), string(s:list))
+    endif
+  endfunction
+  call s:test('c', ['a', 'B', 'c', 'e'])
+  call s:test('D', ['a', 'B', 'c', 'D', 'e'])
+  call s:test('f', ['a', 'B', 'c', 'D', 'e', 'f'])
+endif
+
 " vim: ts=2 sw=2 et
diff --git a/autoload/xolox/misc/option.vim b/autoload/xolox/misc/option.vim
index 8727ea1..efaf1bc 100644
--- a/autoload/xolox/misc/option.vim
+++ b/autoload/xolox/misc/option.vim
@@ -1,6 +1,6 @@
 " Vim auto-load script
 " Author: Peter Odding <peter@peterodding.com>
-" Last Change: June 27, 2011
+" Last Change: August 31, 2011
 " URL: http://peterodding.com/code/vim/misc/
 
 function! xolox#misc#option#get(name, ...)
@@ -56,4 +56,29 @@ function! s:escape_tags(s)
   return escape(a:s, ', ')
 endfunction
 
+function! xolox#misc#option#eval_tags(value, ...)
+  let pathnames = []
+  let first_only = exists('a:1') && a:1
+  for pattern in xolox#misc#option#split_tags(a:value)
+    " Make buffer relative pathnames absolute.
+    if pattern =~ '^\./'
+      let directory = xolox#misc#escape#substitute(expand('%:p:h'))
+      let pattern = substitute(pattern, '^.\ze/', directory, '')
+    endif
+    " Make working directory relative pathnames absolute.
+    if xolox#misc#path#is_relative(pattern)
+      let pattern = xolox#misc#path#merge(getcwd(), pattern)
+    endif
+    " Ignore the trailing `;' for recursive upwards searching because we
+    " always want the most specific pathname available.
+    let pattern = substitute(pattern, ';$', '', '')
+    " Expand the pattern.
+    call extend(pathnames, split(expand(pattern), "\n"))
+    if first_only && !empty(pathnames)
+      return pathnames[0]
+    endif
+  endfor
+  return firstonly ? '' : pathnames
+endfunction
+
 " vim: ts=2 sw=2 et
diff --git a/autoload/xolox/misc/path.vim b/autoload/xolox/misc/path.vim
index 2b4510f..ee0f2e2 100644
--- a/autoload/xolox/misc/path.vim
+++ b/autoload/xolox/misc/path.vim
@@ -1,6 +1,6 @@
 " Vim auto-load script
 " Author: Peter Odding <peter@peterodding.com>
-" Last Change: March 15, 2011
+" Last Change: August 31, 2011
 " URL: http://peterodding.com/code/vim/misc/
 
 let s:windows_compatible = has('win32') || has('win64')
@@ -69,6 +69,7 @@ endfunction
 " Join a directory and filename into a single pathname.
 
 function! xolox#misc#path#merge(parent, child, ...)
+  " TODO Use isabs()!
   if type(a:parent) == type('') && type(a:child) == type('')
     if s:windows_compatible
       let parent = substitute(a:parent, '[\\/]\+$', '', '')
@@ -127,6 +128,18 @@ else
   endfunction
 endif
 
+" Check whether a path is relative.
+
+function! xolox#misc#path#is_relative(path)
+  if a:path =~ '^\w\+://'
+    return 0
+  elseif s:windows_compatible
+    return a:path !~ '^\(\w:\|[\\/]\)'
+  else
+    return a:path !~ '^/'
+  endif
+endfunction
+
 " Create a temporary directory and return the path.
 
 function! xolox#misc#path#tempdir()