diff --git a/src/testdir/Make_amiga.mak b/src/testdir/Make_amiga.mak
index 39f66e9..701c304 100644
--- a/src/testdir/Make_amiga.mak
+++ b/src/testdir/Make_amiga.mak
@@ -31,7 +31,7 @@
 		test66.out test67.out test68.out test69.out test70.out \
 		test71.out test72.out test73.out test74.out test75.out \
 		test76.out test77.out test78.out test79.out test80.out \
-		test81.out test82.out test83.out test84.out
+		test81.out test82.out test83.out test84.out test88.out
 
 .SUFFIXES: .in .out
 
@@ -135,3 +135,4 @@
 test82.out: test82.in
 test83.out: test83.in
 test84.out: test84.in
+test88.out: test88.in
diff --git a/src/testdir/Make_dos.mak b/src/testdir/Make_dos.mak
index b52f249..e902be3 100644
--- a/src/testdir/Make_dos.mak
+++ b/src/testdir/Make_dos.mak
@@ -30,7 +30,7 @@
 		test68.out test69.out test71.out test72.out test73.out \
 		test74.out test75.out test76.out test77.out test78.out \
 		test79.out test80.out test81.out test82.out test83.out \
-		test84.out test85.out test86.out test87.out
+		test84.out test85.out test86.out test87.out test88.out
 
 SCRIPTS32 =	test50.out test70.out
 
diff --git a/src/testdir/Make_ming.mak b/src/testdir/Make_ming.mak
index c150424..c7bbb54 100644
--- a/src/testdir/Make_ming.mak
+++ b/src/testdir/Make_ming.mak
@@ -50,7 +50,7 @@
 		test68.out test69.out test71.out test72.out test73.out \
 		test74.out test75.out test76.out test77.out test78.out \
 		test79.out test80.out test81.out test82.out test83.out \
-		test84.out test85.out test86.out test87.out
+		test84.out test85.out test86.out test87.out test88.out
 
 SCRIPTS32 =	test50.out test70.out
 
diff --git a/src/testdir/Make_os2.mak b/src/testdir/Make_os2.mak
index 9a918d4..d930926 100644
--- a/src/testdir/Make_os2.mak
+++ b/src/testdir/Make_os2.mak
@@ -31,7 +31,7 @@
 		test66.out test67.out test68.out test69.out test70.out \
 		test71.out test72.out test73.out test74.out test75.out \
 		test76.out test77.out test78.out test79.out test80.out \
-		test81.out test82.out test83.out test84.out
+		test81.out test82.out test83.out test84.out test88.out
 
 .SUFFIXES: .in .out
 
diff --git a/src/testdir/Make_vms.mms b/src/testdir/Make_vms.mms
index 6608d70..5398031 100644
--- a/src/testdir/Make_vms.mms
+++ b/src/testdir/Make_vms.mms
@@ -4,7 +4,7 @@
 # Authors:	Zoltan Arpadffy, <arpadffy@polarhome.com>
 #		Sandor Kopanyi,  <sandor.kopanyi@mailbox.hu>
 #
-# Last change:  2012 Oct 06
+# Last change:  2012 Dec 05
 #
 # This has been tested on VMS 6.2 to 8.3 on DEC Alpha, VAX and IA64.
 # Edit the lines in the Configuration section below to select.
@@ -76,7 +76,7 @@
 	 test66.out test67.out test68.out test69.out \
 	 test71.out test72.out test74.out test75.out test76.out \
 	 test77.out test78.out test79.out test80.out test81.out \
-	 test82.out test83.out test84.out
+	 test82.out test83.out test84.out test88.out
 
 # Known problems:
 # Test 30: a problem around mac format - unknown reason
diff --git a/src/testdir/Makefile b/src/testdir/Makefile
index c3923e0..76409ce 100644
--- a/src/testdir/Makefile
+++ b/src/testdir/Makefile
@@ -13,7 +13,7 @@
 
 SCRIPTS = test1.out test2.out test3.out test4.out test5.out test6.out \
 		test7.out test8.out test9.out test10.out test11.out \
-		test12.out  test13.out test14.out test15.out test17.out \
+		test12.out test13.out test14.out test15.out test17.out \
 		test18.out test19.out test20.out test21.out test22.out \
 		test23.out test24.out test25.out test26.out test27.out \
 		test28.out test29.out test30.out test31.out test32.out \
@@ -27,7 +27,7 @@
 		test69.out test70.out test71.out test72.out test73.out \
 		test74.out test75.out test76.out test77.out test78.out \
 		test79.out test80.out test81.out test82.out test83.out \
-		test84.out test85.out test86.out test87.out
+		test84.out test85.out test86.out test87.out test88.out
 
 SCRIPTS_GUI = test16.out
 
diff --git a/src/testdir/test88.in b/src/testdir/test88.in
new file mode 100644
index 0000000..1536b3b
--- /dev/null
+++ b/src/testdir/test88.in
@@ -0,0 +1,85 @@
+vim: set ft=vim
+
+Tests for correct display (cursor column position) with +conceal and
+tabulators.
+
+STARTTEST
+:so small.vim
+:if !has('conceal')
+   e! test.ok
+   wq! test.out
+:endif
+:" Conceal settings.
+:set conceallevel=2
+:set concealcursor=nc
+:syntax match test /|/ conceal
+:" Save current cursor position. Only works in <expr> mode, can't be used
+:" with :normal because it moves the cursor to the command line. Thanks to ZyX
+:" <zyx.vim@gmail.com> for the idea to use an <expr> mapping.
+:let positions = []
+:nnoremap <expr> GG ":let positions += ['".screenrow().":".screencol()."']\n"
+:" Start test.
+/^start:
+:normal ztj
+GGk
+:" We should end up in the same column when running these commands on the two
+:" lines.
+:normal ft
+GGk
+:normal $
+GGk
+:normal 0j
+GGk
+:normal ft
+GGk
+:normal $
+GGk
+:normal 0j0j
+GGk
+:" Same for next test block.
+:normal ft
+GGk
+:normal $
+GGk
+:normal 0j
+GGk
+:normal ft
+GGk
+:normal $
+GGk
+:normal 0j0j
+GGk
+:" And check W with multiple tabs and conceals in a line.
+:normal W
+GGk
+:normal W
+GGk
+:normal W
+GGk
+:normal $
+GGk
+:normal 0j
+GGk
+:normal W
+GGk
+:normal W
+GGk
+:normal W
+GGk
+:normal $
+GGk
+:" Display result.
+:call append('$', 'end:')
+:call append('$', positions)
+:/^end/,$wq! test.out
+ENDTEST
+
+start:
+.concealed.     text
+|concealed|	text
+
+	.concealed.	text
+	|concealed|	text
+
+.a.	.b.	.c.	.d.
+|a|	|b|	|c|	|d|
diff --git a/src/testdir/test88.ok b/src/testdir/test88.ok
new file mode 100644
index 0000000..e726258
--- /dev/null
+++ b/src/testdir/test88.ok
@@ -0,0 +1,23 @@
+end:
+2:1
+2:17
+2:20
+3:1
+3:17
+3:20
+5:8
+5:25
+5:28
+6:8
+6:25
+6:28
+8:1
+8:9
+8:17
+8:25
+8:27
+9:1
+9:9
+9:17
+9:25
+9:26