maint/sc: enable the space-TAB check

* doc/diagmeet.note: Use no TABs.
* ms/config.sed: Use TAB-space, not space-TAB in [].
* cfg.mk (local-checks-to-skip): Remove sc_space_tab.

cfg.mk

@@ -35,8 +35,7 @@ local-checks-to-skip =		\
   sc_error_message_period	\
   sc_error_message_uppercase	\
   sc_m4_quote_check		\
-  sc_program_name		\
-  sc_space_tab
+  sc_program_name
 
 # Tools used to bootstrap this package, used for "announcement".
 bootstrap-tools = autoconf,automake,gnulib

doc/diagmeet.note

@@ -10,21 +10,21 @@ even though there is no snake on that diagonal at the meeting point.
 60
     1   2
 1
-    2  	    2   3   4
+    2       2   3   4
 71
-    3       3  	4   5
+    3       3   4   5
 85
-    4  	3   4	5
+    4   3   4   5
 17
-    5  	4   5
+    5   4   5
 1
-    6       4  	5   6
+    6       4   5   6
 183
     7       5   6   7
 10
-    8  	    6  	7
+    8       6   7
 1
-    9           6   7  	8
+    9           6   7   8
 12
                 7   8   9  10
 13
@@ -36,36 +36,27 @@ even though there is no snake on that diagonal at the meeting point.
 1
    10   9  10
 1
-	8      10      10      10
+        8      10      10      10
 183
-    8   7	9       9      	9
+    8   7       9       9       9
 10
-    7   6	8   9   8      	8
+    7   6       8   9   8       8
 1
-    6   5    		7       7
+    6   5               7       7
 1
-            5          	6      	6
+            5           6       6
 1
-	       	5      	5      	5
+                5       5       5
 50
-	    5   4      	4      	4
+            5   4       4       4
 1
-	            4   3	3
+                    4   3       3
 85
-	    5   4   3   2       2
+            5   4   3   2       2
 1
-	                    2   1
+                            2   1
 17
-	    5   4   3   2   1       1
+            5   4   3   2   1       1
 1
-		                1   0
+                                1   0
      85   1   1   1  159  1   1  17
-
-
-
-
-
-
-
-
-

ms/config.sed

@@ -18,7 +18,7 @@
 # Written by Eli Zaretskii.
 
 
-/(echo[ 	]*':t/ a\
+/(echo[	 ]*':t/ a\
 # DJGPP specific Makefile changes.\
   /^aliaspath *	*=/s,:,";",g;t t\
   /TEXINPUTS=/s,:,";",g;t t\
@@ -56,7 +56,7 @@ s,\.deps,_deps,g
 # and compiling across partitions.
 # The given srcdir value is always translated from the
 # "x:" syntax into "/dev/x" syntax while we run configure.
-/^[ 	]*-srcdir=\*.*$/ a\
+/^[	 ]*-srcdir=\*.*$/ a\
     ac_optarg=`echo "$ac_optarg" | sed "s,^\\([A-Za-z]\\):,/dev/\\1,"`
 /set X `ls -Lt \$srcdir/ i\
    if `echo $srcdir | grep "^/dev/" - > /dev/null`; then\