Whitespace/tab mixups.

1 files changed, 89 insertions, 89 deletions

diff --git a/src/regex.c b/src/regex.c
index ae80ad0cee8..001be124ff3 100644
--- a/src/regex.c
+++ b/src/regex.c
@@ -12,13 +12,13 @@
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
-   USA.  */
+   USA.  */
 
 /* TODO:
    - structure the opcode space into opcode+flag.
@@ -139,7 +139,7 @@
 # endif
 # define free xfree
 
-/* Converts the pointer to the char to BEG-based offset from the start.  */
+/* Converts the pointer to the char to BEG-based offset from the start.  */
 # define PTR_TO_OFFSET(d) POS_AS_IN_BUFFER (POINTER_TO_OFFSET (d))
 # define POS_AS_IN_BUFFER(p) ((p) + (NILP (re_match_object) || BUFFERP (re_match_object)))
 
@@ -540,7 +540,7 @@ init_syntax_once ()
 
 #  define REGEX_REALLOCATE_STACK(source, osize, nsize)                  \
    REGEX_REALLOCATE (source, osize, nsize)
-/* No need to explicitly free anything.  */
+/* No need to explicitly free anything.  */
 #  define REGEX_FREE_STACK(arg) ((void)0)
 
 # endif /* not REGEX_MALLOC */
@@ -654,7 +654,7 @@ typedef enum
   jump,
 
         /* Followed by two-byte relative address of place to resume at
-           in case of failure.  */
+           in case of failure.  */
   on_failure_jump,
 
         /* Like on_failure_jump, but pushes a placeholder instead of the
@@ -691,7 +691,7 @@ typedef enum
   jump_n,
 
         /* Set the following two-byte relative address to the
-           subsequent two-byte number.  The address *includes* the two
+           subsequent two-byte number.  The address *includes* the two
            bytes of number.  */
   set_number_at,
 
@@ -699,7 +699,7 @@ typedef enum
   wordend,      /* Succeeds if at word end.  */
 
   wordbound,    /* Succeeds if at a word boundary.  */
-  notwordbound, /* Succeeds if not at a word boundary.  */
+  notwordbound, /* Succeeds if not at a word boundary.  */
 
   symbeg,       /* Succeeds if at symbol beginning.  */
   symend,       /* Succeeds if at symbol end.  */
@@ -717,8 +717,8 @@ typedef enum
   after_dot,    /* Succeeds if after point.  */
 
   /* Matches any character whose category-set contains the specified
-     category.  The operator is followed by a byte which contains a
-     category code (mnemonic ASCII character).  */
+     category.  The operator is followed by a byte which contains a
+     category code (mnemonic ASCII character).  */
   categoryspec,
 
   /* Matches any character whose category-set does not contain the
@@ -807,7 +807,7 @@ extract_number_and_incr (destination, source)
 
 /* Store a multibyte character in three contiguous bytes starting
    DESTINATION, and increment DESTINATION to the byte after where the
-   character is stored.  Therefore, DESTINATION must be an lvalue.  */
+   character is stored.  Therefore, DESTINATION must be an lvalue.  */
 
 #define STORE_CHARACTER_AND_INCR(destination, character)        \
   do {                                                          \
@@ -818,7 +818,7 @@ extract_number_and_incr (destination, source)
   } while (0)
 
 /* Put into DESTINATION a character stored in three contiguous bytes
-   starting at SOURCE.  */
+   starting at SOURCE.  */
 
 #define EXTRACT_CHARACTER(destination, source)  \
   do {                                          \
@@ -854,13 +854,13 @@ extract_number_and_incr (destination, source)
    && (p)[2 + (c) / BYTEWIDTH] & (1 << ((c) % BYTEWIDTH)))
 
 /* Return the address of end of RANGE_TABLE.  COUNT is number of
-   ranges (which is a pair of (start, end)) in the RANGE_TABLE.  `* 2'
-   is start of range and end of range.  `* 3' is size of each start
+   ranges (which is a pair of (start, end)) in the RANGE_TABLE.  `* 2'
+   is start of range and end of range.  `* 3' is size of each start
    and end.  */
 #define CHARSET_RANGE_TABLE_END(range_table, count)     \
   ((range_table) + (count) * 2 * 3)
 
-/* Test if C is in RANGE_TABLE.  A flag NOT is negated if C is in.
+/* Test if C is in RANGE_TABLE.  A flag NOT is negated if C is in.
    COUNT is number of ranges in RANGE_TABLE.  */
 #define CHARSET_LOOKUP_RANGE_TABLE_RAW(not, c, range_table, count)      \
   do                                                                    \
@@ -1667,7 +1667,7 @@ do {									\
      REGSTART, REGEND -- arrays of string positions.
 
    Also assumes the variables `fail_stack' and (if debugging), `bufp',
-   `pend', `string1', `size1', `string2', and `size2'.  */
+   `pend', `string1', `size1', `string2', and `size2'.  */
 
 #define POP_FAILURE_POINT(str, pat)                                     \
 do {                                                                    \
@@ -1936,7 +1936,7 @@ struct range_table_work_area
 {
   int *table;                   /* actual work area.  */
   int allocated;                /* allocated size for work area in bytes.  */
-  int used;                     /* actually used size in words.  */
+  int used;                     /* actually used size in words.  */
   int bits;                     /* flag to record character classes */
 };
 
@@ -1978,7 +1978,7 @@ struct range_table_work_area
       FREE_STACK_RETURN (tem);                                          \
   } while (0)
 
-/* Free allocated memory for WORK_AREA.  */
+/* Free allocated memory for WORK_AREA.  */
 #define FREE_RANGE_TABLE_WORK_AREA(work_area)   \
   do {                                          \
     if ((work_area).table)                      \
@@ -2478,7 +2478,7 @@ regex_compile (pattern, size, syntax, bufp)
   re_char *beg_interval;
 
   /* Address of the place where a forward jump should go to the end of
-     the containing expression.  Each alternative of an `or' -- except the
+     the containing expression.  Each alternative of an `or' -- except the
      last -- ends with a forward jump of this sort.  */
   unsigned char *fixup_alt_jump = 0;
 
@@ -2550,11 +2550,11 @@ regex_compile (pattern, size, syntax, bufp)
       if (bufp->buffer)
         { /* If zero allocated, but buffer is non-null, try to realloc
              enough space.  This loses if buffer's address is bogus, but
-             that is the user's responsibility.  */
+             that is the user's responsibility.  */
           RETALLOC (bufp->buffer, INIT_BUF_SIZE, unsigned char);
         }
       else
-        { /* Caller did not allocate a buffer.  Do it for them.  */
+        { /* Caller did not allocate a buffer.  Do it for them.  */
           bufp->buffer = TALLOC (INIT_BUF_SIZE, unsigned char);
         }
       if (!bufp->buffer) FREE_STACK_RETURN (REG_ESPACE);
@@ -2618,15 +2618,15 @@ regex_compile (pattern, size, syntax, bufp)
             p = pattern = whitespace_regexp;
             pend = p + strlen (p);
             break;
-          }    
+          }
 
         case '^':
           {
-            if (   /* If at start of pattern, it's an operator.  */
+            if (   /* If at start of pattern, it's an operator.  */
                    p == pattern + 1
-                   /* If context independent, it's an operator.  */
+                   /* If context independent, it's an operator.  */
                 || syntax & RE_CONTEXT_INDEP_ANCHORS
-                   /* Otherwise, depends on what's come before.  */
+                   /* Otherwise, depends on what's come before.  */
                 || at_begline_loc_p (pattern, p, syntax))
               BUF_PUSH ((syntax & RE_NO_NEWLINE_ANCHOR) ? begbuf : begline);
             else
@@ -2639,7 +2639,7 @@ regex_compile (pattern, size, syntax, bufp)
           {
             if (   /* If at end of pattern, it's an operator.  */
                    p == pend
-                   /* If context independent, it's an operator.  */
+                   /* If context independent, it's an operator.  */
                 || syntax & RE_CONTEXT_INDEP_ANCHORS
                    /* Otherwise, depends on what's next.  */
                 || at_endline_loc_p (p, pend, syntax))
@@ -2667,14 +2667,14 @@ regex_compile (pattern, size, syntax, bufp)
             }
 
           {
-            /* 1 means zero (many) matches is allowed.  */
+            /* 1 means zero (many) matches is allowed.  */
             boolean zero_times_ok = 0, many_times_ok = 0;
             boolean greedy = 1;
 
             /* If there is a sequence of repetition chars, collapse it
                down to just one (the right one).  We can't combine
                interval operators with these because of, e.g., `a{2}*',
-               which should only match an even number of `a's.  */
+               which should only match an even number of `a's.  */
 
             for (;;)
               {
@@ -2714,7 +2714,7 @@ regex_compile (pattern, size, syntax, bufp)
               break;
 
             /* Now we know whether or not zero matches is allowed
-               and also whether or not two or more matches is allowed.  */
+               and also whether or not two or more matches is allowed.  */
             if (greedy)
               {
                 if (many_times_ok)
@@ -2821,7 +2821,7 @@ regex_compile (pattern, size, syntax, bufp)
             laststart = b;
 
             /* We test `*p == '^' twice, instead of using an if
-               statement, so we only need one BUF_PUSH.  */
+               statement, so we only need one BUF_PUSH.  */
             BUF_PUSH (*p == '^' ? charset_not : charset);
             if (*p == '^')
               p++;
@@ -2829,7 +2829,7 @@ regex_compile (pattern, size, syntax, bufp)
             /* Remember the first position in the bracket expression.  */
             p1 = p;
 
-            /* Push the number of bytes in the bitmap.  */
+            /* Push the number of bytes in the bitmap.  */
             BUF_PUSH ((1 << BYTEWIDTH) / BYTEWIDTH);
 
             /* Clear the whole map.  */
@@ -2840,7 +2840,7 @@ regex_compile (pattern, size, syntax, bufp)
                 && (syntax & RE_HAT_LISTS_NOT_NEWLINE))
               SET_LIST_BIT ('\n');
 
-            /* Read in characters and ranges, setting map bits.  */
+            /* Read in characters and ranges, setting map bits.  */
             for (;;)
               {
                 boolean escaped_char = false;
@@ -2864,7 +2864,7 @@ regex_compile (pattern, size, syntax, bufp)
                   }
                 else
                   {
-                    /* Could be the end of the bracket expression.      If it's
+                    /* Could be the end of the bracket expression.  If it's
                        not (i.e., when the bracket expression is `[]' so
                        far), the ']' character bit gets set way below.  */
                     if (c == ']' && p2 != p1)
@@ -2881,7 +2881,7 @@ regex_compile (pattern, size, syntax, bufp)
                 if (!escaped_char &&
                     syntax & RE_CHAR_CLASSES && c == '[' && *p == ':')
                   {
-                    /* Leave room for the null.  */
+                    /* Leave room for the null.  */
                     unsigned char str[CHAR_CLASS_MAX_LENGTH + 1];
                     const unsigned char *class_beg;
 
@@ -2962,7 +2962,7 @@ regex_compile (pattern, size, syntax, bufp)
 
                         /* Because the `:' may starts the range, we
                            can't simply set bit and repeat the loop.
-                           Instead, just set it to C and handle below.  */
+                           Instead, just set it to C and handle below.  */
                         c = ':';
                       }
                   }
@@ -3029,7 +3029,7 @@ regex_compile (pattern, size, syntax, bufp)
               }
 
             /* Discard any (non)matching list bytes that are all 0 at the
-               end of the map.  Decrease the map-length byte too.  */
+               end of the map.  Decrease the map-length byte too.  */
             while ((int) b[-1] > 0 && b[b[-1] - 1] == 0)
               b[-1]--;
             b += b[-1];
@@ -3148,7 +3148,7 @@ regex_compile (pattern, size, syntax, bufp)
                   }
 
                 /* These are the values to restore when we hit end of this
-                   group.        They are all relative offsets, so that if the
+                   group.  They are all relative offsets, so that if the
                    whole pattern moves because of realloc, they will still
                    be valid.  */
                 COMPILE_STACK_TOP.begalt_offset = begalt - bufp->buffer;
@@ -3204,7 +3204,7 @@ regex_compile (pattern, size, syntax, bufp)
               {
                 /* We don't just want to restore into `regnum', because
                    later groups should continue to be numbered higher,
-                   as in `(ab)c(de)' -- the second group is #2.  */
+                   as in `(ab)c(de)' -- the second group is #2.  */
                 regnum_t this_group_regnum;
 
                 compile_stack.avail--;
@@ -3221,7 +3221,7 @@ regex_compile (pattern, size, syntax, bufp)
                 pending_exact = 0;
 
                 /* We're at the end of the group, so now we know how many
-                   groups were inside this one.  */
+                   groups were inside this one.  */
                 if (this_group_regnum <= MAX_REGNUM && this_group_regnum > 0)
                   BUF_PUSH_2 (stop_memory, this_group_regnum);
               }
@@ -3236,7 +3236,7 @@ regex_compile (pattern, size, syntax, bufp)
                 goto normal_char;
 
               /* Insert before the previous alternative a jump which
-                 jumps to this alternative if the former fails.  */
+                 jumps to this alternative if the former fails.  */
               GET_BUFFER_SPACE (3);
               INSERT_JUMP (on_failure_jump, begalt, b + 6);
               pending_exact = 0;
@@ -3373,7 +3373,7 @@ regex_compile (pattern, size, syntax, bufp)
                         b += 5;
 
                         /* Code to initialize the lower bound.  Insert
-                           before the `succeed_n'.       The `5' is the last two
+                           before the `succeed_n'.  The `5' is the last two
                            bytes of this `set_number_at', plus 3 bytes of
                            the following `succeed_n'.  */
                         insert_op2 (set_number_at, laststart, 5, lower_bound, b);
@@ -3443,7 +3443,7 @@ regex_compile (pattern, size, syntax, bufp)
 
 #ifdef emacs
             /* There is no way to specify the before_dot and after_dot
-               operators.  rms says this is ok.  --karl  */
+               operators.  rms says this is ok.  --karl  */
             case '=':
               BUF_PUSH (at_dot);
               break;
@@ -3588,7 +3588,7 @@ regex_compile (pattern, size, syntax, bufp)
               /* We have only one byte following the exactn for the count.  */
               || *pending_exact >= (1 << BYTEWIDTH) - MAX_MULTIBYTE_LENGTH
 
-              /* If followed by a repetition operator.  */
+              /* If followed by a repetition operator.  */
               || (p != pend && (*p == '*' || *p == '^'))
               || ((syntax & RE_BK_PLUS_QM)
                   ? p + 1 < pend && *p == '\\' && (p[1] == '+' || p[1] == '?')
@@ -3680,7 +3680,7 @@ regex_compile (pattern, size, syntax, bufp)
 
 /* Subroutines for `regex_compile'.  */
 
-/* Store OP at LOC followed by two-byte integer parameter ARG.  */
+/* Store OP at LOC followed by two-byte integer parameter ARG.  */
 
 static void
 store_op1 (op, loc, arg)
@@ -3832,7 +3832,7 @@ analyse_first (p, pend, fastmap, multibyte)
   boolean not;
 
   /* If all elements for base leading-codes in fastmap is set, this
-     flag is set true.  */
+     flag is set true.  */
   boolean match_any_multibyte_characters = false;
 
   assert (p);
@@ -3880,7 +3880,7 @@ analyse_first (p, pend, fastmap, multibyte)
 
 
       /* Following are the cases which match a character.  These end
-         with `break'.  */
+         with `break'.  */
 
         case exactn:
           if (fastmap)
@@ -4102,7 +4102,7 @@ analyse_first (p, pend, fastmap, multibyte)
 
       /* Getting here means we have found the possible starting
          characters for one path of the pattern -- and that the empty
-         string does not match.  We need not follow this path further.  */
+         string does not match.  We need not follow this path further.  */
       return 0;
     } /* while p */
 
@@ -4137,7 +4137,7 @@ re_compile_fastmap (bufp)
 
   assert (fastmap && bufp->buffer);
 
-  bzero (fastmap, 1 << BYTEWIDTH);  /* Assume nothing's valid.  */
+  bzero (fastmap, 1 << BYTEWIDTH);  /* Assume nothing's valid.  */
   bufp->fastmap_accurate = 1;       /* It will be when we're done.  */
 
   analysis = analyse_first (bufp->buffer, bufp->buffer + bufp->used,
@@ -4182,7 +4182,7 @@ re_set_registers (bufp, regs, num_regs, starts, ends)
 }
 WEAK_ALIAS (__re_set_registers, re_set_registers)
 
-/* Searching routines.  */
+/* Searching routines.  */
 
 /* Like re_search_2, below, but only one string is specified, and
    doesn't let you say where to stop matching. */
@@ -4251,7 +4251,7 @@ re_search_2 (bufp, str1, size1, str2, size2, startpos, range, regs, stop)
   int endpos = startpos + range;
   boolean anchored_start;
 
-  /* Nonzero if we have to concern multibyte character.  */
+  /* Nonzero if we have to concern multibyte character.  */
   const boolean multibyte = RE_MULTIBYTE_P (bufp);
 
   /* Check for out-of-range STARTPOS.  */
@@ -4321,7 +4321,7 @@ re_search_2 (bufp, str1, size1, str2, size2, startpos, range, regs, stop)
       /* If a fastmap is supplied, skip quickly over characters that
          cannot be the start of a match.  If the pattern can match the
          null string, however, we don't need to skip characters; we want
-         the first null string.  */
+         the first null string.  */
       if (fastmap && startpos < total_size && !bufp->can_be_null)
         {
           register re_char *d;
@@ -4329,7 +4329,7 @@ re_search_2 (bufp, str1, size1, str2, size2, startpos, range, regs, stop)
 
           d = POS_ADDR_VSTRING (startpos);
 
-          if (range > 0)        /* Searching forwards.  */
+          if (range > 0)        /* Searching forwards.  */
             {
               register int lim = 0;
               int irange = range;
@@ -4403,7 +4403,7 @@ re_search_2 (bufp, str1, size1, str2, size2, startpos, range, regs, stop)
 
               startpos += irange - range;
             }
-          else                          /* Searching backwards.  */
+          else                          /* Searching backwards.  */
             {
               int room = (startpos >= size1
                           ? size2 + size1 - startpos
@@ -4526,7 +4526,7 @@ static int bcmp_translate _RE_ARGS((re_char *s1, re_char *s2,
      }                                                                  \
 
 /* Test if at very beginning or at very end of the virtual concatenation
-   of `string1' and `string2'.  If only one string, it's `string2'.  */
+   of `string1' and `string2'.  If only one string, it's `string2'.  */
 #define AT_STRINGS_BEG(d) ((d) == (size1 ? string1 : string2) || !size2)
 #define AT_STRINGS_END(d) ((d) == end2)
 
@@ -4547,7 +4547,7 @@ static int bcmp_translate _RE_ARGS((re_char *s1, re_char *s2,
 
    The DEC Alpha C compiler 3.x generates incorrect code for the
    test  WORDCHAR_P (d - 1) != WORDCHAR_P (d)  in the expansion of
-   AT_WORD_BOUNDARY, so this code is disabled.  Expanding the
+   AT_WORD_BOUNDARY, so this code is disabled.  Expanding the
    macro and introducing temporary variables works around the bug.  */
 
 #if 0
@@ -4749,7 +4749,7 @@ mutually_exclusive_p (bufp, p1, p2)
         {
           /* Now, we are sure that P2 has no range table.
              So, for the size of bitmap in P2, `p2[1]' is
-             enough.    But P1 may have range table, so the
+             enough.  But P1 may have range table, so the
              size of bitmap table of P1 is extracted by
              using macro `CHARSET_BITMAP_SIZE'.
 
@@ -4780,7 +4780,7 @@ mutually_exclusive_p (bufp, p1, p2)
             {
               int idx;
               /* We win if the charset_not inside the loop lists
-                 every character listed in the charset after.    */
+                 every character listed in the charset after.  */
               for (idx = 0; idx < (int) p2[1]; idx++)
                 if (! (p2[2 + idx] == 0
                        || (idx < CHARSET_BITMAP_SIZE (p1)
@@ -4874,7 +4874,7 @@ WEAK_ALIAS (__re_match, re_match)
 
 #ifdef emacs
 /* In Emacs, this is the string or buffer in which we
-   are matching.  It is used for looking up syntax properties.  */
+   are matching.  It is used for looking up syntax properties.  */
 Lisp_Object re_match_object;
 #endif
 
@@ -4884,11 +4884,11 @@ Lisp_Object re_match_object;
    matching at STOP.
 
    If REGS is non-null and the `no_sub' field of BUFP is nonzero, we
-   store offsets for the substring each group matched in REGS.  See the
+   store offsets for the substring each group matched in REGS.  See the
    documentation for exactly how many groups we fill.
 
    We return -1 if no match, -2 if an internal error (such as the
-   failure stack overflowing).  Otherwise, we return the length of the
+   failure stack overflowing).  Otherwise, we return the length of the
    matched substring.  */
 
 int
@@ -4920,7 +4920,7 @@ re_match_2 (bufp, string1, size1, string2, size2, pos, regs, stop)
 WEAK_ALIAS (__re_match_2, re_match_2)
 
 /* This is a separate function so that we can force an alloca cleanup
-   afterwards.  */
+   afterwards.  */
 static int
 re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
      struct re_pattern_buffer *bufp;
@@ -4939,7 +4939,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
   re_char *end1, *end2;
 
   /* Pointers into string1 and string2, just past the last characters in
-     each to consider matching.  */
+     each to consider matching.  */
   re_char *end_match_1, *end_match_2;
 
   /* Where we are in the data, and the end of the current string.  */
@@ -4955,10 +4955,10 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
   re_char *p = bufp->buffer;
   re_char *pend = p + bufp->used;
 
-  /* We use this to map every character in the string.  */
+  /* We use this to map every character in the string.  */
   RE_TRANSLATE_TYPE translate = bufp->translate;
 
-  /* Nonzero if we have to concern multibyte character.  */
+  /* Nonzero if we have to concern multibyte character.*/
   const boolean multibyte = RE_MULTIBYTE_P (bufp);
 
   /* Failure point stack.  Each place that can handle a failure further
@@ -4967,8 +4967,8 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
      the subexpressions we're currently inside, plus the number of such
      registers, and, finally, two char *'s.  The first char * is where
      to resume scanning the pattern; the second one is where to resume
-     scanning the strings.      */
-#ifdef MATCH_MAY_ALLOCATE /* otherwise, this is global.  */
+     scanning the strings.  */
+#ifdef MATCH_MAY_ALLOCATE /* otherwise, this is global.  */
   fail_stack_type fail_stack;
 #endif
 #ifdef DEBUG
@@ -4982,7 +4982,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
 #endif
 
   /* We fill all the registers internally, independent of what we
-     return, for use in backreferences.  The number here includes
+     return, for use in backreferences.  The number here includes
      an element for register zero.  */
   size_t num_regs = bufp->re_nsub + 1;
 
@@ -5008,7 +5008,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
 
   /* Logically, this is `best_regend[0]'.  But we don't want to have to
      allocate space for that if we're not allocating space for anything
-     else (see below).  Also, we never need info about register 0 for
+     else (see below).  Also, we never need info about register 0 for
      any of the other register vectors, and it seems rather a kludge to
      treat `best_regend' differently than the rest.  So we keep track of
      the end of the best match so far in a separate variable.  We
@@ -5066,7 +5066,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
     regstart[reg] = regend[reg] = NULL;
 
   /* We move `string1' into `string2' if the latter's empty -- but not if
-     `string1' is null.  */
+     `string1' is null.  */
   if (size2 == 0 && string1 != NULL)
     {
       string2 = string1;
@@ -5123,7 +5123,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
   DEBUG_PRINT_DOUBLE_STRING (d, string1, size1, string2, size2);
   DEBUG_PRINT1 ("'\n");
 
-  /* This loops over pattern commands.  It exits by returning from the
+  /* This loops over pattern commands.  It exits by returning from the
      function if the match is complete, or it drops through if the match
      fails at this starting point in the input data.  */
   for (;;)
@@ -5146,7 +5146,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
               boolean best_match_p;
 
               /* AIX compiler got confused when this was combined
-                 with the previous declaration.  */
+                 with the previous declaration.  */
               if (same_str_p)
                 best_match_p = d > match_end;
               else
@@ -5184,7 +5184,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
                      end_match_1' while the restored d is in string2.
                      For example, the pattern `x.*y.*z' against the
                      strings `x-' and `y-z-', if the two strings are
-                     not consecutive in memory.  */
+                     not consecutive in memory.  */
                   DEBUG_PRINT1 ("Restoring best registers.\n");
 
                   d = match_end;
@@ -5207,7 +5207,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
             {
               /* Have the register data arrays been allocated?  */
               if (bufp->regs_allocated == REGS_UNALLOCATED)
-                { /* No.  So allocate them with malloc.  We need one
+                { /* No.  So allocate them with malloc.  We need one
                      extra element beyond `num_regs' for the `-1' marker
                      GNU code uses.  */
                   regs->num_regs = MAX (RE_NREGS, num_regs + 1);
@@ -5239,7 +5239,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
               else
                 {
                   /* These braces fend off a "empty body in an else-statement"
-                     warning under GCC when assert expands to nothing.  */
+                     warning under GCC when assert expands to nothing.  */
                   assert (bufp->regs_allocated == REGS_FIXED);
                 }
 
@@ -5271,7 +5271,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
                  were in the pattern, set the extra elements to -1.  If
                  we (re)allocated the registers, this is the case,
                  because we always allocate enough to have at least one
-                 -1 at the end.  */
+                 -1 at the end.  */
               for (reg = num_regs; reg < regs->num_regs; reg++)
                 regs->start[reg] = regs->end[reg] = -1;
             } /* regs && !bufp->no_sub */
@@ -5289,7 +5289,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
           return mcnt;
         }
 
-      /* Otherwise match next pattern command.  */
+      /* Otherwise match next pattern command.  */
       switch (SWITCH_ENUM_CAST ((re_opcode_t) *p++))
         {
         /* Ignore these.  Used to ignore the n of succeed_n's which
@@ -5302,9 +5302,9 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
           DEBUG_PRINT1 ("EXECUTING succeed.\n");
           goto succeed_label;
 
-        /* Match the next n pattern characters exactly.  The following
+        /* Match the next n pattern characters exactly.  The following
            byte in the pattern defines n, and the n bytes after that
-           are the characters to match.  */
+           are the characters to match.  */
         case exactn:
           mcnt = *p++;
           DEBUG_PRINT2 ("EXECUTING exactn %d.\n", mcnt);
@@ -5468,7 +5468,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
         /* The beginning of a group is represented by start_memory.
            The argument is the register number.  The text
            matched within the group is recorded (in the internal
-           registers data structure) under the register number.  */
+           registers data structure) under the register number.  */
         case start_memory:
           DEBUG_PRINT2 ("EXECUTING start_memory %d:\n", *p);
 
@@ -5517,14 +5517,14 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
         case duplicate:
           {
             register re_char *d2, *dend2;
-            int regno = *p++;   /* Get which register to match against.  */
+            int regno = *p++;   /* Get which register to match against.  */
             DEBUG_PRINT2 ("EXECUTING duplicate %d.\n", regno);
 
-            /* Can't back reference a group which we've never matched.  */
+            /* Can't back reference a group which we've never matched.  */
             if (REG_UNSET (regstart[regno]) || REG_UNSET (regend[regno]))
               goto fail;
 
-            /* Where in input to try to start matching.  */
+            /* Where in input to try to start matching.  */
             d2 = regstart[regno];
 
             /* Remember the start point to rollback upon failure.  */
@@ -5637,7 +5637,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
            pushes NULL as the value for the string on the stack.  Then
            `POP_FAILURE_POINT' will keep the current value for the
            string, instead of restoring it.  To see why, consider
-           matching `foo\nbar' against `.*\n'.  The .* matches the foo;
+           matching `foo\nbar' against `.*\n'.  The .* matches the foo;
            then the . fails against the \n.  But the next thing we want
            to do is match the \n against the \n; if we restored the
            string value, we would be back at the foo.
@@ -5782,7 +5782,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
           IMMEDIATE_QUIT_CHECK;
           EXTRACT_NUMBER_AND_INCR (mcnt, p);    /* Get the amount to jump.  */
           DEBUG_PRINT2 ("EXECUTING jump %d ", mcnt);
-          p += mcnt;                            /* Do the jump.  */
+          p += mcnt;                            /* Do the jump.  */
           DEBUG_PRINT2 ("(to %p).\n", p);
           break;
 
@@ -5875,7 +5875,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
               if (/* Case 2: Only one of S1 and S2 is Sword.  */
                   ((s1 == Sword) != (s2 == Sword))
                   /* Case 3: Both of S1 and S2 are Sword, and macro
-                     WORD_BOUNDARY_P (C1, C2) returns nonzero.  */
+                     WORD_BOUNDARY_P (C1, C2) returns nonzero.  */
                   || ((s1 == Sword) && WORD_BOUNDARY_P (c1, c2)))
                 not = !not;
             }
@@ -5889,7 +5889,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
 
           /* We FAIL in one of the following cases: */
 
-          /* Case 1: D is at the end of string.  */
+          /* Case 1: D is at the end of string.  */
           if (AT_STRINGS_END (d))
             goto fail;
           else
@@ -5921,7 +5921,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
                   s1 = SYNTAX (c1);
 
                   /* ... and S1 is Sword, and WORD_BOUNDARY_P (C1, C2)
-                     returns 0.  */
+                     returns 0.  */
                   if ((s1 == Sword) && !WORD_BOUNDARY_P (c1, c2))
                     goto fail;
                 }
@@ -5965,7 +5965,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
                   s2 = SYNTAX (c2);
 
                   /* ... and S2 is Sword, and WORD_BOUNDARY_P (C1, C2)
-                     returns 0.  */
+                     returns 0.  */
                   if ((s2 == Sword) && !WORD_BOUNDARY_P (c1, c2))
           goto fail;
                 }
@@ -5977,7 +5977,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
 
           /* We FAIL in one of the following cases: */
 
-          /* Case 1: D is at the end of string.  */
+          /* Case 1: D is at the end of string.  */
           if (AT_STRINGS_END (d))
             goto fail;
           else
@@ -5994,7 +5994,7 @@ re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop)
               PREFETCH ();
               c2 = RE_STRING_CHAR (d, dend - d);
               s2 = SYNTAX (c2);
-        
+
               /* Case 2: S2 is neither Sword nor Ssymbol. */
               if (s2 != Sword && s2 != Ssymbol)
                 goto fail;