coreutils: keep lines within 80-column limits

* cfg.mk (LINE_LEN_MAX, FILTER_LONG_LINES): New macros.
(sc_long_lines): New rule.
* HACKING: Use shorter URLs to the same material.
* doc/Makefile.am, doc/coreutils.texi, m4/boottime.m4:
* man/help2man, man/stdbuf.x, src/Makefile.am, src/cat.c, src/copy.c:
* src/cp.c, src/dd.c, src/df.c, src/du.c, src/groups.c, src/install.c:
* src/ls.c, src/md5sum.c, src/mv.c, src/od.c, src/pinky.c, src/ptx.c:
* src/readlink.c, src/remove.c, src/rmdir.c, src/setuidgid.c:
* src/sort.c, src/tail.c, src/touch.c, tests/Coreutils.pm:
* tests/cp/existing-perm-race, tests/cp/perm, tests/cp/preserve-gid:
* tests/du/2g, tests/du/long-from-unreadable, tests/init.sh:
* tests/install/basic-1, tests/ls/nameless-uid:
* tests/ls/readdir-mountpoint-inode, tests/misc/chroot-credentials:
* tests/misc/cut, tests/misc/date, tests/misc/join, tests/misc/md5sum:
* tests/misc/sha1sum, tests/misc/sha224sum, tests/misc/sort:
* tests/misc/sort-continue, tests/misc/sort-files0-from:
* tests/misc/sort-rand, tests/misc/stdbuf, tests/misc/tr:
* tests/misc/uniq, tests/mv/atomic, tests/mv/part-fail:
* tests/mv/part-symlink, tests/mv/sticky-to-xpart, tests/pr/pr-tests:
* tests/rm/fail-2eperm, tests/rm/interactive-always:
Reformat to fit within 80 columns.
* doc/Makefile.am (BAD_POSIX_PERL): New macro.
* doc/coreutils.texi: Reword slightly, to make menus and
index lines shorter.
* src/md5sum.c: Redo --help output so that it fits within 79
columns, since that's a bit more portable and all the other --help
strings fit in 79 columns.

3 files changed, 26 insertions, 7 deletions

diff --git a/tests/cp/existing-perm-race b/tests/cp/existing-perm-race
index f048eb160..d5774404e 100755
--- a/tests/cp/existing-perm-race
+++ b/tests/cp/existing-perm-race
@@ -71,8 +71,8 @@ case $mode in
   # a $g2 process can maintain an open file descriptor to the
   # destination, but it's safer anyway.
   -rw-r-----*)
-    # If the file has group $g1 and is group-readable, that is definitely
-    # bogus, as neither the source nor the destination was readable to group $g1.
+    # If the file has group $g1 and is group-readable, that is definitely bogus,
+    # as neither the source nor the destination was readable to group $g1.
     test "$group" = "$g1" && fail=1;;
 
   *) fail=1;;
diff --git a/tests/cp/perm b/tests/cp/perm
index e5fdb098d..663ad4dfa 100755
--- a/tests/cp/perm
+++ b/tests/cp/perm
@@ -55,9 +55,13 @@ for u in 31 37 2; do
                 ;;
               cp:*:no)
                 test $u = 37 &&
-                  expected_perms=`echo $expected_perms|sed 's/.....$/-----/'`
+                  expected_perms=`
+                    echo $expected_perms | sed 's/.....$/-----/'
+                  `
                 test $u = 31 &&
-                  expected_perms=`echo $expected_perms|sed 's/..\(..\).$/--\1-/'`
+                  expected_perms=`
+                    echo $expected_perms | sed 's/..\(..\).$/--\1-/'
+                  `
                 ;;
             esac
             test _$actual_perms = _$expected_perms || exit 1
diff --git a/tests/cp/preserve-gid b/tests/cp/preserve-gid
index a25cbb478..b0497841d 100755
--- a/tests/cp/preserve-gid
+++ b/tests/cp/preserve-gid
@@ -60,9 +60,24 @@ t1() {
       "$nameless_uid" "$@"
 }
 
-nameless_uid=`$PERL -le 'foreach my $i (1000..16*1024-1) { getpwuid $i or (print $i), exit }'`
-nameless_gid1=`$PERL -le 'foreach my $i (1000..16*1024) { getgrgid $i or (print $i), exit }'`
-nameless_gid2=`$PERL -le 'foreach my $i ('"$nameless_gid1"'+1..16*1024) { getgrgid $i or (print $i), exit }'`
+nameless_uid=`$PERL -le '
+  foreach my $i (1000..16*1024-1)
+    {
+      getpwuid $i or (print $i), exit
+    }
+'`
+nameless_gid1=`$PERL -le '
+  foreach my $i (1000..16*1024)
+    {
+      getgrgid $i or (print $i), exit
+    }
+'`
+nameless_gid2=`$PERL -le '
+  foreach my $i ('"$nameless_gid1"'+1..16*1024)
+    {
+      getgrgid $i or (print $i), exit
+    }
+'`
 
 if test -z "$nameless_uid" \
     || test -z "$nameless_gid1" \