diff --git a/src/testdir/test_quickfix.vim b/src/testdir/test_quickfix.vim
index 0cea0e5..d624baf 100644
--- a/src/testdir/test_quickfix.vim
+++ b/src/testdir/test_quickfix.vim
@@ -24,6 +24,11 @@
     command! -nargs=* Xaddbuffer <mods>caddbuffer <args>
     command! -nargs=* Xrewind <mods>crewind <args>
     command! -nargs=* -bang Xnext <mods>cnext<bang> <args>
+    command! -nargs=* -bang Xprev <mods>cprev<bang> <args>
+    command! -nargs=* -bang Xfirst <mods>cfirst<bang> <args>
+    command! -nargs=* -bang Xlast <mods>clast<bang> <args>
+    command! -nargs=* -bang Xnfile <mods>cnfile<bang> <args>
+    command! -nargs=* -bang Xpfile <mods>cpfile<bang> <args>
     command! -nargs=* Xexpr <mods>cexpr <args>
     command! -nargs=* Xvimgrep <mods>vimgrep <args>
     command! -nargs=* Xgrep <mods> grep <args>
@@ -48,6 +53,11 @@
     command! -nargs=* Xaddbuffer <mods>laddbuffer <args>
     command! -nargs=* Xrewind <mods>lrewind <args>
     command! -nargs=* -bang Xnext <mods>lnext<bang> <args>
+    command! -nargs=* -bang Xprev <mods>lprev<bang> <args>
+    command! -nargs=* -bang Xfirst <mods>lfirst<bang> <args>
+    command! -nargs=* -bang Xlast <mods>llast<bang> <args>
+    command! -nargs=* -bang Xnfile <mods>lnfile<bang> <args>
+    command! -nargs=* -bang Xpfile <mods>lpfile<bang> <args>
     command! -nargs=* Xexpr <mods>lexpr <args>
     command! -nargs=* Xvimgrep <mods>lvimgrep <args>
     command! -nargs=* Xgrep <mods> lgrep <args>
@@ -310,6 +320,56 @@
   call XbufferTests('l')
 endfunction
 
+function XexprTests(cchar)
+  call s:setup_commands(a:cchar)
+
+  call assert_fails('Xexpr 10', 'E777:')
+endfunction
+
+function Test_cexpr()
+  call XexprTests('c')
+  call XexprTests('l')
+endfunction
+
+" Tests for :cnext, :cprev, :cfirst, :clast commands
+function Xtest_browse(cchar)
+  call s:setup_commands(a:cchar)
+
+  call s:create_test_file('Xqftestfile1')
+  call s:create_test_file('Xqftestfile2')
+
+  Xgetexpr ['Xqftestfile1:5:Line5',
+		\ 'Xqftestfile1:6:Line6',
+		\ 'Xqftestfile2:10:Line10',
+		\ 'Xqftestfile2:11:Line11']
+
+  Xfirst
+  call assert_fails('Xprev', 'E553')
+  call assert_fails('Xpfile', 'E553')
+  Xnfile
+  call assert_equal('Xqftestfile2', bufname('%'))
+  call assert_equal(10, line('.'))
+  Xpfile
+  call assert_equal('Xqftestfile1', bufname('%'))
+  call assert_equal(6, line('.'))
+  Xlast
+  call assert_equal('Xqftestfile2', bufname('%'))
+  call assert_equal(11, line('.'))
+  call assert_fails('Xnext', 'E553')
+  call assert_fails('Xnfile', 'E553')
+  Xrewind
+  call assert_equal('Xqftestfile1', bufname('%'))
+  call assert_equal(5, line('.'))
+
+  call delete('Xqftestfile1')
+  call delete('Xqftestfile2')
+endfunction
+
+function Test_browse()
+  call Xtest_browse('c')
+  call Xtest_browse('l')
+endfunction
+
 function Test_nomem()
   call test_alloc_fail(GetAllocId('qf_dirname_start'), 0, 0)
   call assert_fails('vimgrep vim runtest.vim', 'E342:')
@@ -754,25 +814,61 @@
   call delete('habits1.txt')
 endfunction
 
-" TODO:
-" Add tests for the following formats in 'errorformat'
-"	%n  %t  %r  %+  %-  %O
-function! Test_efm2()
+" Tests for invalid error format specifies
+function Xinvalid_efm_Tests(cchar)
+  call s:setup_commands(a:cchar)
+
   let save_efm = &efm
 
-  " Test for invalid efm
-  set efm=%L%M%N
-  call assert_fails('cexpr "abc.txt:1:Hello world"', 'E376:')
-  call assert_fails('lexpr "abc.txt:1:Hello world"', 'E376:')
+  set efm=%f:%l:%m,%f:%f:%l:%m
+  call assert_fails('Xexpr "abc.txt:1:Hello world"', 'E372:')
+
+  set efm=%f:%l:%m,%f:%l:%r:%m
+  call assert_fails('Xexpr "abc.txt:1:Hello world"', 'E373:')
+
+  set efm=%f:%l:%m,%O:%f:%l:%m
+  call assert_fails('Xexpr "abc.txt:1:Hello world"', 'E373:')
+
+  set efm=%f:%l:%m,%f:%l:%*[^a-z
+  call assert_fails('Xexpr "abc.txt:1:Hello world"', 'E374:')
+
+  set efm=%f:%l:%m,%f:%l:%*c
+  call assert_fails('Xexpr "abc.txt:1:Hello world"', 'E375:')
+
+  set efm=%f:%l:%m,%L%M%N
+  call assert_fails('Xexpr "abc.txt:1:Hello world"', 'E376:')
+
+  set efm=%f:%l:%m,%f:%l:%m:%R
+  call assert_fails('Xexpr "abc.txt:1:Hello world"', 'E377:')
+
+  set efm=
+  call assert_fails('Xexpr "abc.txt:1:Hello world"', 'E378:')
+
+  set efm=%DEntering\ dir\ abc,%f:%l:%m
+  call assert_fails('Xexpr ["Entering dir abc", "abc.txt:1:Hello world"]', 'E379:')
+
+  let &efm = save_efm
+endfunction
+
+function Test_invalid_efm()
+  call Xinvalid_efm_Tests('c')
+  call Xinvalid_efm_Tests('l')
+endfunction
+
+" TODO:
+" Add tests for the following formats in 'errorformat'
+"	%r  %O
+function! Test_efm2()
+  let save_efm = &efm
 
   " Test for %s format in efm
   set efm=%f:%s
   cexpr 'Xtestfile:Line search text'
-
   let l = getqflist()
   call assert_equal(l[0].pattern, '^\VLine search text\$')
   call assert_equal(l[0].lnum, 0)
 
+  " Test for %P, %Q and %t format specifiers
   let lines=["[Xtestfile1]",
 	      \ "(1,17)  error: ';' missing",
 	      \ "(21,2)  warning: variable 'z' not defined",
@@ -794,6 +890,34 @@
   call assert_equal(9, len(l))
   call assert_equal(21, l[2].lnum)
   call assert_equal(2, l[2].col)
+  call assert_equal('w', l[2].type)
+  call assert_equal('e', l[3].type)
+
+  " Tests for %E, %C and %Z format specifiers
+  let lines = ["Error 275",
+	      \ "line 42",
+	      \ "column 3",
+	      \ "' ' expected after '--'"
+	      \]
+  set efm=%EError\ %n,%Cline\ %l,%Ccolumn\ %c,%Z%m
+  cgetexpr lines
+  let l = getqflist()
+  call assert_equal(275, l[0].nr)
+  call assert_equal(42, l[0].lnum)
+  call assert_equal(3, l[0].col)
+  call assert_equal('E', l[0].type)
+  call assert_equal("\n' ' expected after '--'", l[0].text)
+
+  " Test for %>
+  let lines = ["Error in line 147 of foo.c:",
+	      \"unknown variable 'i'"
+	      \]
+  set efm=unknown\ variable\ %m,%E%>Error\ in\ line\ %l\ of\ %f:,%Z%m
+  cgetexpr lines
+  let l = getqflist()
+  call assert_equal(147, l[0].lnum)
+  call assert_equal('E', l[0].type)
+  call assert_equal("\nunknown variable 'i'", l[0].text)
 
   let &efm = save_efm
 endfunction
diff --git a/src/version.c b/src/version.c
index e83eaf7..3afe4a6 100644
--- a/src/version.c
+++ b/src/version.c
@@ -759,6 +759,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1984,
+/**/
     1983,
 /**/
     1982,