find: add conditional support for -maxdepth and -regex

(needed for Linux 2.6.22-rc4 build)

-maxdepth:
# size busybox_old busybox_unstripped
   text    data     bss     dec     hex filename
 675622    2792   15728  694142   a977e busybox_old
 675770    2792   15728  694290   a9812 busybox_unstripped

-regex:
# size busybox_old busybox_unstripped
   text    data     bss     dec     hex filename
 675770    2792   15728  694290   a9812 busybox_old
 675894    2792   15728  694414   a988e busybox_unstripped

1 files changed, 36 insertions, 32 deletions

diff --git a/include/usage.h b/include/usage.h
index 0c02d2501..8c438e285 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -943,46 +943,50 @@
        "the current directory, default EXPRESSION is '-print'\n" \
      "\nEXPRESSION may consist of:" \
      "\n        -follow         Dereference symlinks" \
+        USE_FEATURE_FIND_XDEV( \
+     "\n        -xdev           Don't descend directories on other filesystems") \
+        USE_FEATURE_FIND_MAXDEPTH( \
+     "\n        -maxdepth N     Descend at most N levels. -maxdepth 0 applies" \
+     "\n                        tests/actions to command line arguments only") \
      "\n        -name PATTERN   File name (leading directories removed) matches PATTERN" \
      "\n        -print          Print (default and assumed)" \
         USE_FEATURE_FIND_PRINT0( \
      "\n        -print0         Delimit output with null characters rather than" \
-     "\n                        newlines" \
-        ) USE_FEATURE_FIND_TYPE( \
-     "\n        -type X         Filetype matches X (where X is one of: f,d,l,b,c,...)" \
-        ) USE_FEATURE_FIND_PERM( \
+     "\n                        newlines") \
+        USE_FEATURE_FIND_TYPE( \
+     "\n        -type X         Filetype matches X (where X is one of: f,d,l,b,c,...)") \
+        USE_FEATURE_FIND_PERM( \
      "\n        -perm PERMS     Permissions match any of (+NNN), all of (-NNN)," \
-     "\n                        or exactly (NNN)" \
-        ) USE_FEATURE_FIND_MTIME( \
+     "\n                        or exactly (NNN)") \
+        USE_FEATURE_FIND_MTIME( \
      "\n        -mtime DAYS     Modified time is greater than (+N), less than (-N)," \
-     "\n                        or exactly (N) days" \
-        ) USE_FEATURE_FIND_MMIN( \
+     "\n                        or exactly (N) days") \
+        USE_FEATURE_FIND_MMIN( \
      "\n        -mmin MINS      Modified time is greater than (+N), less than (-N)," \
-     "\n                        or exactly (N) minutes" \
-        ) USE_FEATURE_FIND_NEWER( \
-     "\n        -newer FILE     Modified time is more recent than FILE's" \
-        ) USE_FEATURE_FIND_INUM( \
-     "\n        -inum N         File has inode number N" \
-        ) USE_FEATURE_FIND_EXEC( \
+     "\n                        or exactly (N) minutes") \
+        USE_FEATURE_FIND_NEWER( \
+     "\n        -newer FILE     Modified time is more recent than FILE's") \
+        USE_FEATURE_FIND_INUM( \
+     "\n        -inum N         File has inode number N") \
+        USE_FEATURE_FIND_EXEC( \
      "\n        -exec CMD       Execute CMD with all instances of {} replaced by the" \
-     "\n                        files matching EXPRESSION" \
-        ) USE_FEATURE_FIND_USER( \
-     "\n        -user NAME      File is owned by user NAME (numeric user ID allowed)" \
-        ) USE_FEATURE_FIND_GROUP( \
-     "\n        -group NAME     File belongs to group NAME (numeric group ID allowed)" \
-       ) USE_FEATURE_FIND_DEPTH( \
-     "\n        -depth          Process directory after traversing it" \
-        ) USE_FEATURE_FIND_SIZE( \
-     "\n        -size N         File size is N" \
-        ) USE_FEATURE_FIND_PRUNE( \
-     "\n        -prune          Stop traversing current subtree" \
-        ) USE_FEATURE_FIND_DELETE( \
-     "\n        -delete         Delete files, turns on -depth option" \
-        ) USE_FEATURE_FIND_PATH( \
-     "\n        -path           Path matches PATTERN" \
-        ) USE_FEATURE_FIND_PAREN( \
-     "\n        (EXPR)          Group an expression" \
-        )
+     "\n                        files matching EXPRESSION") \
+        USE_FEATURE_FIND_USER( \
+     "\n        -user NAME      File is owned by user NAME (numeric user ID allowed)") \
+        USE_FEATURE_FIND_GROUP( \
+     "\n        -group NAME     File belongs to group NAME (numeric group ID allowed)") \
+        USE_FEATURE_FIND_DEPTH( \
+     "\n        -depth          Process directory after traversing it") \
+        USE_FEATURE_FIND_SIZE( \
+     "\n        -size N         File size is N") \
+        USE_FEATURE_FIND_PRUNE( \
+     "\n        -prune          Stop traversing current subtree") \
+        USE_FEATURE_FIND_DELETE( \
+     "\n        -delete         Delete files, turns on -depth option") \
+        USE_FEATURE_FIND_PATH( \
+     "\n        -path           Path matches PATTERN") \
+        USE_FEATURE_FIND_PAREN( \
+     "\n        (EXPR)          Group an expression") \
 
 #define find_example_usage \
        "$ find / -name passwd\n" \