patch 7.4.791
Problem:    The buffer list can be very long.
Solution:   Add an argument to ":ls" to specify the type of buffer to list.
            (Marcin Szamotulski)
diff --git a/src/ex_cmds.h b/src/ex_cmds.h
index 21d42d5..7945956 100644
--- a/src/ex_cmds.h
+++ b/src/ex_cmds.h
@@ -217,7 +217,7 @@
 			NEEDARG|EXTRA|NOTRLCOM|CMDWIN,
 			ADDR_LINES),
 EX(CMD_buffers,		"buffers",	buflist_list,
-			BANG|TRLBAR|CMDWIN,
+			BANG|EXTRA|TRLBAR|CMDWIN,
 			ADDR_LINES),
 EX(CMD_bufdo,		"bufdo",	ex_listdo,
 			BANG|NEEDARG|EXTRA|NOTRLCOM|RANGE|NOTADR|DFLALL,
@@ -526,7 +526,7 @@
 			RANGE|NOTADR|ZEROR|BANG|FILE1|TRLBAR,
 			ADDR_LINES),
 EX(CMD_files,		"files",	buflist_list,
-			BANG|TRLBAR|CMDWIN,
+			BANG|EXTRA|TRLBAR|CMDWIN,
 			ADDR_LINES),
 EX(CMD_filetype,	"filetype",	ex_filetype,
 			EXTRA|TRLBAR|CMDWIN,
@@ -847,7 +847,7 @@
 			RANGE|NOTADR|COUNT|TRLBAR,
 			ADDR_LINES),
 EX(CMD_ls,		"ls",		buflist_list,
-			BANG|TRLBAR|CMDWIN,
+			BANG|EXTRA|TRLBAR|CMDWIN,
 			ADDR_LINES),
 EX(CMD_move,		"move",		ex_copymove,
 			RANGE|WHOLEFOLD|EXTRA|TRLBAR|CMDWIN|MODIFY,