maint: fix incorrect spellings etc

* NEWS: Use a standard version specification.
* doc/coreutils.texi: Fix incorrect grammar.
* src/df.c: Update a stale comment.
* src/copy.c: Fix incorrect spellings.
* src/factor.c: Likewise.
* src/ls.c: Likewise.
* src/pr.c: Likewise.
* src/relpath.c: Likewise.
* src/shred.c: Likewise.
* src/sort.c: Likewise.
* src/split.c: Likewise.
* src/stdbuf.c: Likewise.
* tests/misc/seq-precision.sh: Likewise.

NEWS

@@ -10,7 +10,7 @@ GNU coreutils NEWS                                    -*- outline -*-
   [bug introduced in coreutils-8.10]
 
   ls no longer prematurely wraps lines when printing short file names.
-  [bug introduced in 5.1.0]
+  [bug introduced in coreutils-5.1.0]
 
   shred again uses defined patterns for all iteration counts.
   [bug introduced in coreutils-5.93]

doc/coreutils.texi

@@ -8667,7 +8667,7 @@ otherwise the cache is dropped for the processed
 portion of the file.  Also when count=0
 failure to discard the cache is diagnosed
 and reflected in the exit status.
-Here as some usage examples:
+Here are some usage examples:
 
 @example
 # Advise to drop cache for whole file

src/copy.c

@@ -1819,7 +1819,7 @@ should_dereference (const struct cp_options *x, bool command_line_arg)
 /* Copy the file SRC_NAME to the file DST_NAME.  The files may be of
    any type.  NEW_DST should be true if the file DST_NAME cannot
    exist because its parent directory was just created; NEW_DST should
-   be false if DST_NAME might already exist.  A nonnull PARENT describes the
+   be false if DST_NAME might already exist.  A non-null PARENT describes the
    parent directory.  ANCESTORS points to a linked, null terminated list of
    devices and inodes of parent directories of SRC_NAME.  COMMAND_LINE_ARG
    is true iff SRC_NAME was specified on the command line.
@@ -2375,7 +2375,7 @@ copy_internal (char const *src_name, char const *dst_name,
          If this happens to you, please do the following and send the output
          to the bug-reporting address (e.g., in the output of cp --help):
            touch k; perl -e 'rename "k","/tmp/k" or print "$!(",$!+0,")\n"'
-         where your current directory is on one partion and /tmp is the other.
+         where your current directory is on one partition and /tmp is the other.
          Also, please try to find the E* errno macro name corresponding to
          the diagnostic and parenthesized integer, and include that in your
          e-mail.  One way to do that is to run a command like this

src/df.c

@@ -15,7 +15,7 @@
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 /* Written by David MacKenzie <djm@gnu.ai.mit.edu>.
-   --human-readable and --megabyte options added by lm@sgi.com.
+   --human-readable option added by lm@sgi.com.
    --si and large file support added by eggert@twinsun.com.  */
 
 #include <config.h>

src/factor.c

@@ -37,7 +37,7 @@
 
     Using GMP is optional.  Define HAVE_GMP to make this code include GMP
     factoring code.  The GMP factoring code is based on GMP's demos/factorize.c
-    (last synched 2012-09-07).  The GMP-based factoring code will stay in GMP
+    (last synced 2012-09-07).  The GMP-based factoring code will stay in GMP
     factoring code even if numbers get small enough for using the two-word
     code.
 

src/ls.c

@@ -945,7 +945,7 @@ static size_t dired_pos;
       }									\
     while (0)
 
-/* With --dired, store pairs of beginning and ending indices of filenames.  */
+/* With --dired, store pairs of beginning and ending indices of file names.  */
 static struct obstack dired_obstack;
 
 /* With --dired, store pairs of beginning and ending indices of any
@@ -2156,7 +2156,7 @@ get_funky_string (char **dest, const char **src, bool equals_end,
               state = ST_END;	/* End of string */
               break;
             case '\\':
-              state = ST_BACKSLASH; /* Backslash scape sequence */
+              state = ST_BACKSLASH; /* Backslash escape sequence */
               ++p;
               break;
             case '^':
@@ -3478,7 +3478,7 @@ cmp_name (struct fileinfo const *a, struct fileinfo const *b,
 }
 
 /* Compare file extensions.  Files with no extension are 'smallest'.
-   If extensions are the same, compare by filenames instead.  */
+   If extensions are the same, compare by file names instead.  */
 
 static inline int
 cmp_extension (struct fileinfo const *a, struct fileinfo const *b,

src/pr.c

@@ -468,7 +468,7 @@ static size_t buff_allocated;
    we do column balancing on the last page. */
 static int *line_vector;
 
-/* Array of horizonal positions.
+/* Array of horizontal positions.
    For each line in line_vector, end_vector[line] is the horizontal
    position we are in after printing that line.  We keep track of this
    so that we know how much we need to pad to prepare for the next

src/relpath.c

@@ -83,7 +83,7 @@ buffer_or_output (const char* str, char **pbuf, size_t *plen)
 }
 
 /* Output the relative representation if possible.
-   If BUF is non NULL, write to that buffer rather than to stdout.  */
+   If BUF is non-NULL, write to that buffer rather than to stdout.  */
 bool
 relpath (const char *can_fname, const char *can_reldir, char *buf, size_t len)
 {

src/shred.c

@@ -431,7 +431,7 @@ dopass (int fd, struct stat const *st, char const *qname, off_t *sizep,
         unsigned long int k, unsigned long int n)
 {
   off_t size = *sizep;
-  off_t offset;			/* Current file posiiton */
+  off_t offset;			/* Current file position */
   time_t thresh IF_LINT ( = 0);	/* Time to maybe print next status update */
   time_t now = 0;		/* Current time */
   size_t lim;			/* Amount of data to try writing */

src/sort.c

@@ -238,7 +238,7 @@ struct month
 struct merge_node
 {
   struct line *lo;              /* Lines to merge from LO child node. */
-  struct line *hi;              /* Lines to merge from HI child ndoe. */
+  struct line *hi;              /* Lines to merge from HI child node. */
   struct line *end_lo;          /* End of available lines from LO. */
   struct line *end_hi;          /* End of available lines from HI. */
   struct line **dest;           /* Pointer to destination of merge. */
@@ -678,7 +678,7 @@ struct sortfile
   /* The file's name.  */
   char const *name;
 
-  /* Nonnull if this is a temporary file, in which case NAME == TEMP->name.  */
+  /* Non-null if this is a temporary file, in which case NAME == TEMP->name.  */
   struct tempnode *temp;
 };
 
@@ -2736,7 +2736,7 @@ compare (struct line const *a, struct line const *b)
 }
 
 /* Write LINE to output stream FP; the output file's name is
-   OUTPUT_FILE if OUTPUT_FILE is nonnull, and is the standard output
+   OUTPUT_FILE if OUTPUT_FILE is non-null, and is the standard output
    otherwise.  If debugging is enabled and FP is standard output,
    append some debugging information.  */
 

src/split.c

@@ -1285,7 +1285,7 @@ main (int argc, char **argv)
           if (split_type != type_undef)
             FAIL_ONLY_ONE_WAY ();
           split_type = type_bytes;
-          /* Limit to OFF_T_MAX, becaue if input is a pipe, we could get more
+          /* Limit to OFF_T_MAX, because if input is a pipe, we could get more
              data than is possible to write to a single file, so indicate that
              immediately rather than having possibly future invocations fail. */
           n_units = xdectoumax (optarg, 1, OFF_T_MAX, multipliers,

src/stdbuf.c

@@ -381,7 +381,7 @@ main (int argc, char **argv)
      stdbuf is running from.  */
   set_program_path (program_name);
   if (!program_path)
-    program_path = xstrdup (PKGLIBDIR);  /* Need to init to non NULL.  */
+    program_path = xstrdup (PKGLIBDIR);  /* Need to init to non-NULL.  */
   set_LD_PRELOAD ();
   free (program_path);
 

tests/misc/seq-precision.sh

@@ -25,7 +25,7 @@ seq 999999 inf | head -n2 > out || fail=1
 printf "%s\n" 999999 1000000 > exp || framework_failure_
 compare exp out || fail=1
 
-# Excercise buffer handling in non floating point output
+# Exercise buffer handling in non floating point output
 for i in $(seq 100); do
   n1="$(printf '%*s' $i '' | tr ' ' 9)"
   n2="1$(echo $n1 | tr 9 0)"