doc: parse any whitespace as an option/description delimiter

* src/system.c (oputs_): Use isspace() rather than hardcoding.
Note we don't use c_isspace() as we need to support anything
coming from translations.

src/chroot.c

@@ -17,7 +17,6 @@
 /* Written by Roland McGrath.  */
 
 #include <config.h>
-#include <ctype.h>
 #include <getopt.h>
 #include <stdio.h>
 #include <sys/types.h>

src/csplit.c

@@ -19,7 +19,6 @@
 
 #include <config.h>
 
-#include <ctype.h>
 #include <getopt.h>
 #include <sys/types.h>
 #include <signal.h>

src/dd.c

@@ -18,7 +18,6 @@
 
 #include <config.h>
 
-#include <ctype.h>
 #include <sys/types.h>
 #include <signal.h>
 

src/expand-common.c

@@ -16,7 +16,6 @@
 
 #include <config.h>
 
-#include <ctype.h>
 #include <stdio.h>
 #include <sys/types.h>
 #include "system.h"

src/expand.c

@@ -34,7 +34,6 @@
 
 #include <config.h>
 
-#include <ctype.h>
 #include <stdio.h>
 #include <getopt.h>
 #include <sys/types.h>

src/fmt.c

@@ -17,7 +17,6 @@
 /* Written by Ross Paterson <rap@doc.ic.ac.uk>.  */
 
 #include <config.h>
-#include <ctype.h>
 #include <stdio.h>
 #include <sys/types.h>
 #include <getopt.h>

src/fold.c

@@ -18,7 +18,6 @@
 
 #include <config.h>
 
-#include <ctype.h>
 #include <stdio.h>
 #include <getopt.h>
 #include <sys/types.h>

src/ls.c

@@ -36,7 +36,6 @@
    Greg Lee <lee@uhunix.uhcc.hawaii.edu>.  */
 
 #include <config.h>
-#include <ctype.h>
 #include <sys/types.h>
 
 #include <termios.h>

src/numfmt.c

@@ -15,7 +15,6 @@
    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
-#include <ctype.h>
 #include <float.h>
 #include <getopt.h>
 #include <stdio.h>

src/od.c

@@ -18,7 +18,6 @@
 
 #include <config.h>
 
-#include <ctype.h>
 #include <endian.h>
 #include <float.h>
 #include <stdio.h>

src/pinky.c

@@ -17,7 +17,6 @@
 /* Created by hacking who.c by Kaveh Ghazi ghazi@caip.rutgers.edu */
 
 #include <config.h>
-#include <ctype.h>
 #include <getopt.h>
 #include <pwd.h>
 #include <stdio.h>

src/pr.c

@@ -309,7 +309,6 @@
 
 #include <config.h>
 
-#include <ctype.h>
 #include <getopt.h>
 #include <sys/types.h>
 #include "system.h"

src/ptx.c

@@ -19,7 +19,6 @@
 
 #include <config.h>
 
-#include <ctype.h>
 #include <getopt.h>
 #include <sys/types.h>
 #include "system.h"

src/seq.c

@@ -17,7 +17,6 @@
 /* Written by Ulrich Drepper.  */
 
 #include <config.h>
-#include <ctype.h>
 #include <getopt.h>
 #include <stdio.h>
 #include <sys/types.h>

src/set-fields.c

@@ -19,7 +19,6 @@
 #include <config.h>
 
 #include "system.h"
-#include <ctype.h>
 #include "c-ctype.h"
 #include "quote.h"
 #include "set-fields.h"

src/sort.c

@@ -22,7 +22,6 @@
 
 #include <config.h>
 
-#include <ctype.h>
 #include <getopt.h>
 #include <pthread.h>
 #include <sys/resource.h>

src/split.c

@@ -21,7 +21,6 @@
    * support --suppress-matched as in csplit.  */
 #include <config.h>
 
-#include <ctype.h>
 #include <stdio.h>
 #include <getopt.h>
 #include <signal.h>

src/system.h

@@ -20,6 +20,8 @@
 
 #include <alloca.h>
 
+#include <ctype.h>
+
 #include <sys/stat.h>
 
 /* Commonly used file permission combination.  */
@@ -568,8 +570,7 @@ oputs_ (MAYBE_UNUSED char const* program, char const *option)
 
   /* Set desc_text to spacing after the full option text */
   char const *desc_text = option_text + anchor_len;
-  while (*desc_text && (! (*desc_text == ' ' || *desc_text == '\n')
-                        || *(desc_text + 1) == '-'))
+  while (*desc_text && (! isspace (*desc_text) || *(desc_text + 1) == '-'))
     desc_text++;
 
   /* write spaces before option text. */

src/test.c

@@ -21,7 +21,6 @@
    the shell builtin version. */
 
 #include <config.h>
-#include <ctype.h>
 #include <stdio.h>
 #include <sys/types.h>
 

src/tr.c

@@ -18,7 +18,6 @@
 
 #include <config.h>
 
-#include <ctype.h>
 #include <stdio.h>
 #include <sys/types.h>
 #include <getopt.h>

src/truncate.c

@@ -21,7 +21,6 @@
    to better fit the "GNU" environment.  */
 
 #include <config.h>             /* sets _FILE_OFFSET_BITS=64 etc. */
-#include <ctype.h>
 #include <stdio.h>
 #include <getopt.h>
 #include <sys/types.h>

src/unexpand.c

@@ -35,7 +35,6 @@
 
 #include <config.h>
 
-#include <ctype.h>
 #include <stdio.h>
 #include <getopt.h>
 #include <sys/types.h>

src/wc.c

@@ -19,7 +19,6 @@
 
 #include <config.h>
 
-#include <ctype.h>
 #include <stdio.h>
 #include <getopt.h>
 #include <sys/types.h>