Change the indent options that "make indent" uses to that "make
indent" and "make sc_spaces_not_tabs" have consistent expectations.

* cfg.mk (indent_args): use the --no-tabs option of indent so that
"make indent" produces an output which is acceptalbe to "make
sc_spaces_not_tabs".
* find/ftsfind.c: Re-indent with "make indent".
* find/parser.c: Likewise.
* find/print.c: Likewise.
* find/util.c: Likewise.
* gnulib-local/lib/gcc-function-attributes.h: Likewise.
* locate/locate.c: Likewise.
* tests/xargs/test-sigusr.c: Likewise.
* xargs/xargs.c: Likewise.
---
 cfg.mk                                     |   4 +
 find/ftsfind.c                             |   2 +-
 find/parser.c                              |  32 +++---
 find/print.c                               | 120 ++++++++++-----------
 find/util.c                                |   2 +-
 gnulib-local/lib/gcc-function-attributes.h |  26 ++---
 locate/locate.c                            |   6 +-
 tests/xargs/test-sigusr.c                  |   4 +-
 xargs/xargs.c                              |  14 +--
 9 files changed, 107 insertions(+), 103 deletions(-)

diff --git a/cfg.mk b/cfg.mk
index 6ef1bd09..0789056b 100644
--- a/cfg.mk
+++ b/cfg.mk
@@ -301,6 +301,10 @@ sc_spaces_not_tabs:
          && { echo '$(ME): Indent C sources with spaces, not tabs (fix with 
build-aux/tabs-to-spaces.sh)' 1>&2; exit 1; } \
          || :
 
+# Ensure that the output of "make indent" is acceptable to
+# sc_spaces_not_tabs.
+indent_args = --no-tabs --ignore-profile --preprocessor-indentation 1
+
 # Enforce standard references "standard input/output/error".
 sc_standard_outputs:
        @cd $(srcdir) || exit 1; \
diff --git a/find/ftsfind.c b/find/ftsfind.c
index 1532fc76..c30d43fc 100644
--- a/find/ftsfind.c
+++ b/find/ftsfind.c
@@ -659,7 +659,7 @@ process_all_startpoints (int argc, char *argv[])
             {
             case AI_ERR_EOF:
               goto argv_iter_done;
-            case AI_ERR_READ:   /* may only happen with -files0-from  */
+            case AI_ERR_READ:  /* may only happen with -files0-from  */
               error (0, errno, _("%s: read error"), files0_filename_quoted);
               state.exit_status = EXIT_FAILURE;
               ok = false;
diff --git a/find/parser.c b/find/parser.c
index dec494c3..4ecd634f 100644
--- a/find/parser.c
+++ b/find/parser.c
@@ -411,7 +411,7 @@ fallback_getfilecon (int fd, const char *name, char **p, 
int prev_rv)
     case ELOOP:
     case ENAMETOOLONG:
 #ifdef EOVERFLOW
-    case EOVERFLOW:             /* EOVERFLOW is not #defined on UNICOS. */
+    case EOVERFLOW:            /* EOVERFLOW is not #defined on UNICOS. */
 #endif
     default:
       return prev_rv;
@@ -561,13 +561,13 @@ set_follow_state (enum SymlinkOption opt)
 {
   switch (opt)
     {
-    case SYMLINK_ALWAYS_DEREF:  /* -L */
+    case SYMLINK_ALWAYS_DEREF: /* -L */
       options.xstat = optionl_stat;
       options.x_getfilecon = optionl_getfilecon;
       options.no_leaf_check = true;
       break;
 
-    case SYMLINK_NEVER_DEREF:   /* -P (default) */
+    case SYMLINK_NEVER_DEREF:  /* -P (default) */
       options.xstat = optionp_stat;
       options.x_getfilecon = optionp_getfilecon;
       /* Can't turn no_leaf_check off because the user might have specified
@@ -575,7 +575,7 @@ set_follow_state (enum SymlinkOption opt)
        */
       break;
 
-    case SYMLINK_DEREF_ARGSONLY:        /* -H */
+    case SYMLINK_DEREF_ARGSONLY:       /* -H */
       options.xstat = optionh_stat;
       options.x_getfilecon = optionh_getfilecon;
       options.no_leaf_check = true;
@@ -1898,7 +1898,7 @@ parse_perm (const struct parser_table *entry, char 
**argv, int *arg_ptr)
       rate = 0.2;
       break;
 
-    case '/':                   /* GNU extension */
+    case '/':                  /* GNU extension */
       mode_start = 1;
       kind = PERM_ANY;
       rate = 0.3;
@@ -2170,12 +2170,12 @@ parse_size (const struct parser_table *entry, char 
**argv, int *arg_ptr)
       arg[len - 1] = '\0';
       break;
 
-    case 'M':                   /* Mebibytes */
+    case 'M':                  /* Mebibytes */
       blksize = 1024 * 1024;
       arg[len - 1] = '\0';
       break;
 
-    case 'G':                   /* Gibibytes */
+    case 'G':                  /* Gibibytes */
       blksize = 1024 * 1024 * 1024;
       arg[len - 1] = '\0';
       break;
@@ -2671,23 +2671,23 @@ insert_type (char **argv, int *arg_ptr,
 
       switch (*typeletter)
         {
-        case 'b':               /* block special */
+        case 'b':              /* block special */
           type_cell = FTYPE_BLK;
           rate = 0.000888f;
           break;
-        case 'c':               /* character special */
+        case 'c':              /* character special */
           type_cell = FTYPE_CHR;
           rate = 0.000443f;
           break;
-        case 'd':               /* directory */
+        case 'd':              /* directory */
           type_cell = FTYPE_DIR;
           rate = 0.0922f;
           break;
-        case 'f':               /* regular file */
+        case 'f':              /* regular file */
           type_cell = FTYPE_REG;
           rate = 0.875f;
           break;
-        case 'l':               /* symbolic link */
+        case 'l':              /* symbolic link */
 #ifdef S_IFLNK
           type_cell = FTYPE_LNK;
           rate = 0.0311f;
@@ -2699,7 +2699,7 @@ insert_type (char **argv, int *arg_ptr,
                  pred_string, (*typeletter));
 #endif
           break;
-        case 'p':               /* pipe */
+        case 'p':              /* pipe */
 #ifdef S_IFIFO
           type_cell = FTYPE_FIFO;
           rate = 7.554e-6f;
@@ -2711,7 +2711,7 @@ insert_type (char **argv, int *arg_ptr,
                  pred_string, (*typeletter));
 #endif
           break;
-        case 's':               /* socket */
+        case 's':              /* socket */
 #ifdef S_IFSOCK
           type_cell = FTYPE_SOCK;
           rate = 1.59e-5f;
@@ -2723,7 +2723,7 @@ insert_type (char **argv, int *arg_ptr,
                  pred_string, (*typeletter));
 #endif
           break;
-        case 'D':               /* Solaris door */
+        case 'D':              /* Solaris door */
 #ifdef S_IFDOOR
           type_cell = FTYPE_DOOR;
           /* There are no Solaris doors on the example system surveyed
@@ -2739,7 +2739,7 @@ insert_type (char **argv, int *arg_ptr,
                  pred_string, (*typeletter));
 #endif
           break;
-        default:                /* None of the above ... nuke 'em. */
+        default:               /* None of the above ... nuke 'em. */
           type_cell = 0;
           error (EXIT_FAILURE, 0,
                  _("Unknown argument to %s: %c"), pred_string, (*typeletter));
diff --git a/find/print.c b/find/print.c
index 41c3e3c4..2377da28 100644
--- a/find/print.c
+++ b/find/print.c
@@ -103,82 +103,82 @@ _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (2, 3);
   assert (kind == KIND_FORMAT);
   switch (format_char)
     {
-    case '%':                   /* literal % */
+    case '%':                  /* literal % */
       *fmt++ = '%';
       break;
 
-    case 'l':                   /* object of symlink */
+    case 'l':                  /* object of symlink */
       pred->need_stat = true;
       mycost = NeedsLinkName;
       *fmt++ = 's';
       break;
 
-    case 'y':                   /* file type */
+    case 'y':                  /* file type */
       pred->need_type = true;
       mycost = NeedsType;
       *fmt++ = 's';
       break;
 
-    case 'i':                   /* inode number */
+    case 'i':                  /* inode number */
       pred->need_inum = true;
       mycost = NeedsInodeNumber;
       *fmt++ = 's';
       break;
 
-    case 'a':                   /* atime in `ctime' format */
-    case 'A':                   /* atime in user-specified strftime format */
-    case 'B':                   /* birth time in user-specified strftime 
format */
-    case 'c':                   /* ctime in `ctime' format */
-    case 'C':                   /* ctime in user-specified strftime format */
-    case 'F':                   /* file system type */
-    case 'g':                   /* group name */
-    case 'M':                   /* mode in `ls -l' format (eg., "drwxr-xr-x") 
*/
-    case 's':                   /* size in bytes */
-    case 't':                   /* mtime in `ctime' format */
-    case 'T':                   /* mtime in user-specified strftime format */
-    case 'u':                   /* user name */
+    case 'a':                  /* atime in `ctime' format */
+    case 'A':                  /* atime in user-specified strftime format */
+    case 'B':                  /* birth time in user-specified strftime format 
*/
+    case 'c':                  /* ctime in `ctime' format */
+    case 'C':                  /* ctime in user-specified strftime format */
+    case 'F':                  /* file system type */
+    case 'g':                  /* group name */
+    case 'M':                  /* mode in `ls -l' format (eg., "drwxr-xr-x") */
+    case 's':                  /* size in bytes */
+    case 't':                  /* mtime in `ctime' format */
+    case 'T':                  /* mtime in user-specified strftime format */
+    case 'u':                  /* user name */
       pred->need_stat = true;
       mycost = NeedsStatInfo;
       *fmt++ = 's';
       break;
 
-    case 'S':                   /* sparseness */
+    case 'S':                  /* sparseness */
       pred->need_stat = true;
       mycost = NeedsStatInfo;
       *fmt++ = 'g';
       break;
 
-    case 'Y':                   /* symlink pointed file type */
+    case 'Y':                  /* symlink pointed file type */
       pred->need_stat = true;
       mycost = NeedsType;       /* true for amortised effect */
       *fmt++ = 's';
       break;
 
-    case 'f':                   /* basename of path */
-    case 'h':                   /* leading directories part of path */
-    case 'p':                   /* pathname */
-    case 'P':                   /* pathname with ARGV element stripped */
+    case 'f':                  /* basename of path */
+    case 'h':                  /* leading directories part of path */
+    case 'p':                  /* pathname */
+    case 'P':                  /* pathname with ARGV element stripped */
       *fmt++ = 's';
       break;
 
-    case 'Z':                   /* SELinux security context */
+    case 'Z':                  /* SELinux security context */
       mycost = NeedsAccessInfo;
       *fmt++ = 's';
       break;
 
-    case 'H':                   /* ARGV element file was found under */
+    case 'H':                  /* ARGV element file was found under */
       *fmt++ = 's';
       break;
 
       /* Numeric items that one might expect to honour
        * #, 0, + flags but which do not.
        */
-    case 'G':                   /* GID number */
-    case 'U':                   /* UID number */
-    case 'b':                   /* size in 512-byte blocks (NOT birthtime in 
ctime fmt) */
-    case 'D':                   /* Filesystem device on which the file exits */
-    case 'k':                   /* size in 1K blocks */
-    case 'n':                   /* number of links */
+    case 'G':                  /* GID number */
+    case 'U':                  /* UID number */
+    case 'b':                  /* size in 512-byte blocks (NOT birthtime in 
ctime fmt) */
+    case 'D':                  /* Filesystem device on which the file exits */
+    case 'k':                  /* size in 1K blocks */
+    case 'n':                  /* number of links */
       pred->need_stat = true;
       mycost = NeedsStatInfo;
       *fmt++ = 's';
@@ -186,11 +186,11 @@ _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD (2, 3);
 
       /* Numeric items that DO honour #, 0, + flags.
        */
-    case 'd':                   /* depth in search tree (0 = ARGV element) */
+    case 'd':                  /* depth in search tree (0 = ARGV element) */
       *fmt++ = 'd';
       break;
 
-    case 'm':                   /* mode as octal number (perms only) */
+    case 'm':                  /* mode as octal number (perms only) */
       *fmt++ = 'o';
       pred->need_stat = true;
       mycost = NeedsStatInfo;
@@ -877,12 +877,12 @@ do_fprintf (struct format_val *dest,
 
   switch (segment->segkind)
     {
-    case KIND_PLAIN:            /* Plain text string (no % conversion). */
+    case KIND_PLAIN:           /* Plain text string (no % conversion). */
       /* trusted */
       checked_fwrite (segment->text, 1, segment->text_len, dest);
       break;
 
-    case KIND_STOP:             /* Terminate argument and flush output. */
+    case KIND_STOP:            /* Terminate argument and flush output. */
       /* trusted */
       checked_fwrite (segment->text, 1, segment->text_len, dest);
       checked_fflush (dest);
@@ -891,34 +891,34 @@ do_fprintf (struct format_val *dest,
     case KIND_FORMAT:
       switch (segment->format_char[0])
         {
-        case 'a':               /* atime in `ctime' format. */
+        case 'a':              /* atime in `ctime' format. */
           /* UNTRUSTED, probably unexploitable */
           checked_fprintf (dest, segment->text,
                            ctime_format (get_stat_atime (stat_buf)));
           break;
-        case 'b':               /* size in 512-byte blocks */
+        case 'b':              /* size in 512-byte blocks */
           /* UNTRUSTED, probably unexploitable */
           checked_fprintf (dest, segment->text,
                            human_readable ((uintmax_t) ST_NBLOCKS (*stat_buf),
                                            hbuf, human_ceiling,
                                            ST_NBLOCKSIZE, 512));
           break;
-        case 'c':               /* ctime in `ctime' format */
+        case 'c':              /* ctime in `ctime' format */
           /* UNTRUSTED, probably unexploitable */
           checked_fprintf (dest, segment->text,
                            ctime_format (get_stat_ctime (stat_buf)));
           break;
-        case 'd':               /* depth in search tree */
+        case 'd':              /* depth in search tree */
           /* UNTRUSTED, probably unexploitable */
           checked_fprintf (dest, segment->text, state.curdepth);
           break;
-        case 'D':               /* Device on which file exists (stat.st_dev) */
+        case 'D':              /* Device on which file exists (stat.st_dev) */
           /* trusted */
           checked_fprintf (dest, segment->text,
                            human_readable ((uintmax_t) stat_buf->st_dev, hbuf,
                                            human_ceiling, 1, 1));
           break;
-        case 'f':               /* base name of path */
+        case 'f':              /* base name of path */
           /* sanitised */
           {
             char *base = base_name (pathname);
@@ -926,12 +926,12 @@ do_fprintf (struct format_val *dest,
             free (base);
           }
           break;
-        case 'F':               /* file system type */
+        case 'F':              /* file system type */
           /* trusted */
           checked_print_quoted (dest, segment->text,
                                 filesystem_type (stat_buf, pathname));
           break;
-        case 'g':               /* group name */
+        case 'g':              /* group name */
           /* trusted */
           /* (well, the actual group is selected by the user but
            * its name was selected by the system administrator)
@@ -949,13 +949,13 @@ do_fprintf (struct format_val *dest,
           }
           FALLTHROUGH;          /*...sometimes, so 'G' case. */
 
-        case 'G':               /* GID number */
+        case 'G':              /* GID number */
           /* UNTRUSTED, probably unexploitable */
           checked_fprintf (dest, segment->text,
                            human_readable ((uintmax_t) stat_buf->st_gid, hbuf,
                                            human_ceiling, 1, 1));
           break;
-        case 'h':               /* leading directories part of path */
+        case 'h':              /* leading directories part of path */
           /* sanitised */
           {
             char *pname = xstrdup (pathname);
@@ -986,7 +986,7 @@ do_fprintf (struct format_val *dest,
           }
           break;
 
-        case 'H':               /* ARGV element file was found under */
+        case 'H':              /* ARGV element file was found under */
           /* trusted */
           {
             char *s = xmalloc (state.starting_path_length + 1);
@@ -997,7 +997,7 @@ do_fprintf (struct format_val *dest,
           }
           break;
 
-        case 'i':               /* inode number */
+        case 'i':              /* inode number */
           /* UNTRUSTED, but not exploitable I think */
           /* POSIX does not guarantee that ino_t is unsigned or even
            * integral (except as an XSI extension), but we'll work on
@@ -1008,14 +1008,14 @@ do_fprintf (struct format_val *dest,
                            human_readable ((uintmax_t) stat_buf->st_ino, hbuf,
                                            human_ceiling, 1, 1));
           break;
-        case 'k':               /* size in 1K blocks */
+        case 'k':              /* size in 1K blocks */
           /* UNTRUSTED, but not exploitable I think */
           checked_fprintf (dest, segment->text,
                            human_readable ((uintmax_t) ST_NBLOCKS (*stat_buf),
                                            hbuf, human_ceiling,
                                            ST_NBLOCKSIZE, 1024));
           break;
-        case 'l':               /* object of symlink */
+        case 'l':              /* object of symlink */
           /* sanitised */
 #ifdef S_ISLNK
           {
@@ -1046,7 +1046,7 @@ do_fprintf (struct format_val *dest,
 #endif /* S_ISLNK */
           break;
 
-        case 'M':               /* mode as 10 chars (eg., "-rwxr-x--x" */
+        case 'M':              /* mode as 10 chars (eg., "-rwxr-x--x" */
           /* UNTRUSTED, probably unexploitable */
           {
             char modestring[16];
@@ -1056,7 +1056,7 @@ do_fprintf (struct format_val *dest,
           }
           break;
 
-        case 'm':               /* mode as octal number (perms only) */
+        case 'm':              /* mode as octal number (perms only) */
           /* UNTRUSTED, probably unexploitable */
           {
             /* Output the mode portably using the traditional numbers,
@@ -1087,19 +1087,19 @@ do_fprintf (struct format_val *dest,
           }
           break;
 
-        case 'n':               /* number of links */
+        case 'n':              /* number of links */
           /* UNTRUSTED, probably unexploitable */
           checked_fprintf (dest, segment->text,
                            human_readable ((uintmax_t) stat_buf->st_nlink,
                                            hbuf, human_ceiling, 1, 1));
           break;
 
-        case 'p':               /* pathname */
+        case 'p':              /* pathname */
           /* sanitised */
           checked_print_quoted (dest, segment->text, pathname);
           break;
 
-        case 'P':               /* pathname with ARGV element stripped */
+        case 'P':              /* pathname with ARGV element stripped */
           /* sanitised */
           if (state.curdepth > 0)
             {
@@ -1118,25 +1118,25 @@ do_fprintf (struct format_val *dest,
           checked_print_quoted (dest, segment->text, cp);
           break;
 
-        case 's':               /* size in bytes */
+        case 's':              /* size in bytes */
           /* UNTRUSTED, probably unexploitable */
           checked_fprintf (dest, segment->text,
                            human_readable ((uintmax_t) stat_buf->st_size,
                                            hbuf, human_ceiling, 1, 1));
           break;
 
-        case 'S':               /* sparseness */
+        case 'S':              /* sparseness */
           /* UNTRUSTED, probably unexploitable */
           checked_fprintf (dest, segment->text, file_sparseness (stat_buf));
           break;
 
-        case 't':               /* mtime in `ctime' format */
+        case 't':              /* mtime in `ctime' format */
           /* UNTRUSTED, probably unexploitable */
           checked_fprintf (dest, segment->text,
                            ctime_format (get_stat_mtime (stat_buf)));
           break;
 
-        case 'u':               /* user name */
+        case 'u':              /* user name */
           /* trusted */
           /* (well, the actual user is selected by the user on systems
            * where chown is not restricted, but the user name was
@@ -1155,7 +1155,7 @@ do_fprintf (struct format_val *dest,
           }
           FALLTHROUGH;          /* .. to case U */
 
-        case 'U':               /* UID number */
+        case 'U':              /* UID number */
           /* UNTRUSTED, probably unexploitable */
           checked_fprintf (dest, segment->text,
                            human_readable ((uintmax_t) stat_buf->st_uid, hbuf,
@@ -1165,7 +1165,7 @@ do_fprintf (struct format_val *dest,
           /* %Y: type of file system entry like `ls -l`:
            *     (d,-,l,s,p,b,c,n) n=nonexistent (symlink)
            */
-        case 'Y':               /* in case of symlink */
+        case 'Y':              /* in case of symlink */
           /* trusted */
           {
 #ifdef S_ISLNK
@@ -1221,7 +1221,7 @@ do_fprintf (struct format_val *dest,
           }
           break;
 
-        case 'Z':               /* SELinux security context */
+        case 'Z':              /* SELinux security context */
           {
             char *scontext;
             int rv =
diff --git a/find/util.c b/find/util.c
index 9939760b..8127c39e 100644
--- a/find/util.c
+++ b/find/util.c
@@ -600,7 +600,7 @@ fallback_stat (const char *name, struct stat *p, int 
prev_rv)
     case ELOOP:
     case ENAMETOOLONG:
 #ifdef EOVERFLOW
-    case EOVERFLOW:             /* EOVERFLOW is not #defined on UNICOS. */
+    case EOVERFLOW:            /* EOVERFLOW is not #defined on UNICOS. */
 #endif
     default:
       return prev_rv;
diff --git a/gnulib-local/lib/gcc-function-attributes.h 
b/gnulib-local/lib/gcc-function-attributes.h
index 79f3ebfd..4ed8280b 100644
--- a/gnulib-local/lib/gcc-function-attributes.h
+++ b/gnulib-local/lib/gcc-function-attributes.h
@@ -103,7 +103,7 @@ visibility    "default"
 #   define _GL_ATTRIBUTE_ALLOC_SIZE(args) __attribute__ ((__alloc_size__ args))
 #  else
 #   define _GL_ATTRIBUTE_ALLOC_SIZE(args)
-                                       /* unsupported */
+                                        /* unsupported */
 #  endif
 # endif
 
@@ -111,7 +111,7 @@ visibility    "default"
 #  if __GNUC_PREREQ(3,1)
 #   define _GL_ATTRIBUTE_DEPRECATED __attribute__ ((__deprecated__))
 #  else
-#   define _GL_ATTRIBUTE_DEPRECATED    /* empty */
+#   define _GL_ATTRIBUTE_DEPRECATED     /* empty */
 #  endif
 # endif
 
@@ -119,7 +119,7 @@ visibility    "default"
 #  if __GNUC_PREREQ(2,7)
 #   define _GL_ATTRIBUTE_FORMAT(spec)  __attribute__ ((__format__ spec))
 #  else
-#   define _GL_ATTRIBUTE_FORMAT(spec)  /* unsupported */
+#   define _GL_ATTRIBUTE_FORMAT(spec)   /* unsupported */
 #  endif
 # endif
 
@@ -128,7 +128,7 @@ visibility    "default"
 #   define _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM(formatstring_parameter, 
first_argument) \
     _GL_ATTRIBUTE_FORMAT ((__printf__, formatstring_parameter, first_argument))
 #  else
-#   define _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM(spec)    /* unsupported */
+#   define _GL_ATTRIBUTE_FORMAT_PRINTF_SYSTEM(spec)     /* unsupported */
 #  endif
 # endif
 
@@ -142,7 +142,7 @@ visibility    "default"
      _GL_ATTRIBUTE_FORMAT ((__printf__, formatstring_parameter, 
first_argument))
 #   endif
 #  else
-#   define _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD(spec)  /* unsupported */
+#   define _GL_ATTRIBUTE_FORMAT_PRINTF_STANDARD(spec)   /* unsupported */
 #  endif
 # endif
 
@@ -152,7 +152,7 @@ visibility    "default"
     _GL_ATTRIBUTE_FORMAT ((__scanf__, formatstring_parameter, first_argument))
 #  else
 #   define _GL_ATTRIBUTE_FORMAT_SCANF_SYSTEM(spec)
-                                               /* unsupported */
+                                                /* unsupported */
 #  endif
 # endif
 
@@ -166,7 +166,7 @@ visibility    "default"
      _GL_ATTRIBUTE_FORMAT ((__scanf__, formatstring_parameter, first_argument))
 #   endif
 #  else
-#   define _GL_ATTRIBUTE_FORMAT_SCANF(spec)    /* unsupported */
+#   define _GL_ATTRIBUTE_FORMAT_SCANF(spec)     /* unsupported */
 #  endif
 # endif
 
@@ -174,7 +174,7 @@ visibility    "default"
 #  if __GNUC_PREREQ(3,0)
 #   define _GL_ATTRIBUTE_MALLOC __attribute__ ((__malloc__))
 #  else
-#   define _GL_ATTRIBUTE_MALLOC        /* unsupported */
+#   define _GL_ATTRIBUTE_MALLOC /* unsupported */
 #  endif
 # endif
 
@@ -183,7 +183,7 @@ visibility    "default"
 #  if __GNUC_PREREQ(3,3)
 #   define _GL_ATTRIBUTE_NONNULL(m) __attribute__ ((__nonnull__ (m)))
 #  else
-#   define _GL_ATTRIBUTE_NONNULL(m)    /* unsupported */
+#   define _GL_ATTRIBUTE_NONNULL(m)     /* unsupported */
 #  endif
 # endif
 # ifndef _GL_ARG_NONNULL
@@ -197,7 +197,7 @@ visibility    "default"
 #   define _GL_ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
 #  else
 #   define _GL_ATTRIBUTE_NORETURN
-                               /* unsupported */
+                                /* unsupported */
 #  endif
 # endif
 
@@ -205,7 +205,7 @@ visibility    "default"
 #  if __GNUC_PREREQ(2,96)
 #   define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__))
 #  else
-#   define _GL_ATTRIBUTE_PURE  /* unsupported */
+#   define _GL_ATTRIBUTE_PURE   /* unsupported */
 #  endif
 # endif
 
@@ -217,7 +217,7 @@ visibility    "default"
    */
 #   define _GL_ATTRIBUTE_SENTINEL(backward_arg_num) __attribute__ 
((__sentinel__(backward_arg_num)))
 #  else
-#   define _GL_ATTRIBUTE_SENTINEL(backward_arg_num)    /* unsupported */
+#   define _GL_ATTRIBUTE_SENTINEL(backward_arg_num)     /* unsupported */
 #  endif
 # endif
 
@@ -225,7 +225,7 @@ visibility    "default"
 #  if __GNUC_PREREQ(3,4)
 #   define _GL_ATTRIBUTE_WUR __attribute__ ((__warn__unused_result__))
 #  else
-#   define _GL_ATTRIBUTE_WUR   /* unsupported */
+#   define _GL_ATTRIBUTE_WUR    /* unsupported */
 #  endif
 # endif
 # ifndef _GL_ATTRIBUTE_RETURN_CHECK
diff --git a/locate/locate.c b/locate/locate.c
index 607899a4..98376b8f 100644
--- a/locate/locate.c
+++ b/locate/locate.c
@@ -1261,7 +1261,7 @@ search_one_database (int argc,
         add_visitor (visit_non_existing_nofollow, NULL);
       break;
 
-    case ACCEPT_EITHER: /* Default, neither -E nor -e */
+    case ACCEPT_EITHER:        /* Default, neither -E nor -e */
       /* do nothing; no extra processing. */
       break;
     }
@@ -1683,8 +1683,8 @@ dolocate (int argc, char **argv, int secure_db_fd)
           }
           break;
 
-        case 's':               /* use stdio */
-        case 'm':               /* use mmap  */
+        case 's':              /* use stdio */
+        case 'm':              /* use mmap  */
           /* These options are implemented simply for
            * compatibility with FreeBSD
            */
diff --git a/tests/xargs/test-sigusr.c b/tests/xargs/test-sigusr.c
index 7375e278..fb3fa7b5 100644
--- a/tests/xargs/test-sigusr.c
+++ b/tests/xargs/test-sigusr.c
@@ -207,13 +207,13 @@ run_xargs (const char *option, const char *opt_arg, int 
send_signal)
     case -1:
       error (EXIT_FAILURE, errno, "cannot fork");
       break;
-    case 0:                     /* child */
+    case 0:                    /* child */
       close (pipefd[0]);        /* close read end */
       /* The child will close the write end of the pipe on successful exec. */
       run_child (argv, pipefd[1]);
       abort ();
       break;
-    default:                    /* parent */
+    default:                   /* parent */
       close (pipefd[1]);        /* close write end */
       if (read (pipefd[0], &child_errno, sizeof child_errno) <
           sizeof child_errno)
diff --git a/xargs/xargs.c b/xargs/xargs.c
index 12fd7ff3..b30f9f9f 100644
--- a/xargs/xargs.c
+++ b/xargs/xargs.c
@@ -538,8 +538,8 @@ main (int argc, char **argv)
           input_delimiter = get_input_delimiter (optarg);
           break;
 
-        case 'E':               /* POSIX */
-        case 'e':               /* deprecated */
+        case 'E':              /* POSIX */
+        case 'e':              /* deprecated */
           if (optarg && (strlen (optarg) > 0))
             eof_str = optarg;
           else
@@ -549,8 +549,8 @@ main (int argc, char **argv)
         case 'h':
           usage (EXIT_SUCCESS);
 
-        case 'I':               /* POSIX */
-        case 'i':               /* deprecated */
+        case 'I':              /* POSIX */
+        case 'i':              /* deprecated */
           if (optarg)
             bc_ctl.replace_pat = optarg;
           else
@@ -568,7 +568,7 @@ main (int argc, char **argv)
             }
           break;
 
-        case 'L':               /* POSIX */
+        case 'L':              /* POSIX */
           bc_ctl.lines_per_exec = parse_num (optarg, 'L', 1L, -1L, 1);
           /* -L excludes -i -n.  */
           if (bc_ctl.args_per_exec != 0)
@@ -583,7 +583,7 @@ main (int argc, char **argv)
             }
           break;
 
-        case 'l':               /* deprecated */
+        case 'l':              /* deprecated */
           if (optarg)
             bc_ctl.lines_per_exec = parse_num (optarg, 'l', 1L, -1L, 1);
           else
@@ -1371,7 +1371,7 @@ xargs_do_exec (struct buildcmd_control *ctl, void 
*usercontext, int argc,
             error (EXIT_FAILURE, errno, _("cannot fork"));
           }
 
-        case 0:         /* Child.  */
+        case 0:                /* Child.  */
           {
             close (fd[0]);
             child_error = EXIT_SUCCESS;
-- 
2.47.3


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