*: small code shrinks and compile fix for unicode

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

5 files changed, 23 insertions, 19 deletions

diff --git a/archival/tar.c b/archival/tar.c
index f16b4d6..3a94012 100644
--- a/archival/tar.c
+++ b/archival/tar.c
@@ -770,8 +770,8 @@ enum {
 	OPT_INCLUDE_FROM = IF_FEATURE_TAR_FROM(     (1 << OPTBIT_INCLUDE_FROM)) + 0, // T
 	OPT_EXCLUDE_FROM = IF_FEATURE_TAR_FROM(     (1 << OPTBIT_EXCLUDE_FROM)) + 0, // X
 	OPT_GZIP         = IF_FEATURE_SEAMLESS_GZ(  (1 << OPTBIT_GZIP        )) + 0, // z
-	OPT_NOPRESERVE_TIME = IF_FEATURE_TAR_NOPRESERVE_TIME((1 << OPTBIT_NOPRESERVE_TIME)) + 0, // m
 	OPT_COMPRESS     = IF_FEATURE_SEAMLESS_Z(   (1 << OPTBIT_COMPRESS    )) + 0, // Z
+	OPT_NOPRESERVE_TIME = IF_FEATURE_TAR_NOPRESERVE_TIME((1 << OPTBIT_NOPRESERVE_TIME)) + 0, // m
 	OPT_NUMERIC_OWNER   = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_NUMERIC_OWNER  )) + 0, // numeric-owner
 	OPT_NOPRESERVE_PERM = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_NOPRESERVE_PERM)) + 0, // no-same-permissions
 	OPT_OVERWRITE       = IF_FEATURE_TAR_LONG_OPTIONS((1 << OPTBIT_OVERWRITE      )) + 0, // overwrite
@@ -951,14 +951,12 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
 	if (opt & OPT_COMPRESS)
 		get_header_ptr = get_header_tar_Z;
 
-#if ENABLE_FEATURE_TAR_NOPRESERVE_TIME
 	if (opt & OPT_NOPRESERVE_TIME)
 		tar_handle->ah_flags &= ~ARCHIVE_RESTORE_DATE;
-#endif
 
 #if ENABLE_FEATURE_TAR_FROM
 	tar_handle->reject = append_file_list_to_list(tar_handle->reject);
-#if ENABLE_FEATURE_TAR_LONG_OPTIONS
+# if ENABLE_FEATURE_TAR_LONG_OPTIONS
 	/* Append excludes to reject */
 	while (excludes) {
 		llist_t *next = excludes->link;
@@ -966,12 +964,12 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
 		tar_handle->reject = excludes;
 		excludes = next;
 	}
-#endif
+# endif
 	tar_handle->accept = append_file_list_to_list(tar_handle->accept);
 #endif
 
 	/* Setup an array of filenames to work with */
-	/* TODO: This is the same as in ar, separate function ? */
+	/* TODO: This is the same as in ar, make a separate function? */
 	while (*argv) {
 		/* kill trailing '/' unless the string is just "/" */
 		char *cp = last_char_is(*argv, '/');
@@ -990,7 +988,7 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
 		int flags = O_RDONLY;
 
 		if (opt & OPT_CREATE) {
-			/* Make sure there is at least one file to tar up.  */
+			/* Make sure there is at least one file to tar up */
 			if (tar_handle->accept == NULL)
 				bb_error_msg_and_die("empty archive");
 
@@ -1022,7 +1020,7 @@ int tar_main(int argc UNUSED_PARAM, char **argv)
 	signal(SIGCHLD, handle_SIGCHLD);
 #endif
 
-	/* create an archive */
+	/* Create an archive */
 	if (opt & OPT_CREATE) {
 #if ENABLE_FEATURE_SEAMLESS_GZ || ENABLE_FEATURE_SEAMLESS_BZ2
 		int zipMode = 0;
diff --git a/editors/diff.c b/editors/diff.c
index 9110982..2e3a455 100644
--- a/editors/diff.c
+++ b/editors/diff.c
@@ -432,7 +432,8 @@ static NOINLINE int *create_J(FILE_and_pos_t ft[2], int nlen[2], off_t *ix[2])
 		token_t tok;
 		size_t sz = 100;
 		nfile[i] = xmalloc((sz + 3) * sizeof(nfile[i][0]));
-		fseeko(ft[i].ft_fp, 0, SEEK_SET); /* ft gets here without the correct position */
+		/* ft gets here without the correct position, cant use seek_ft */
+		fseeko(ft[i].ft_fp, 0, SEEK_SET);
 
 		nlen[i] = 0;
 		/* We could zalloc nfile, but then zalloc starts showing in gprof at ~1% */
@@ -625,7 +626,7 @@ static bool diff(FILE* fp[2], char *file[2])
 		}
 		if (idx < 0)
 			continue;
-		if (!(option_mask32 & FLAG(q)) && !((option_mask32 & FLAG(B)) && !nonempty)) {
+		if (!(option_mask32 & (FLAG(q)+FLAG(B))) && !nonempty) {
 			struct context_vec *cvp = vec;
 			int lowa = MAX(1, cvp->a - opt_U_context);
 			int upb  = MIN(nlen[0], vec[idx].b + opt_U_context);
@@ -634,8 +635,8 @@ static bool diff(FILE* fp[2], char *file[2])
 
 			if (!anychange) {
 				/* Print the context/unidiff header first time through */
-				printf("--- %s\n", label[0] ?: file[0]);
-				printf("+++ %s\n", label[1] ?: file[1]);
+				printf("--- %s\n", label[0] ? label[0] : file[0]);
+				printf("+++ %s\n", label[1] ? label[1] : file[1]);
 			}
 
 			printf("@@ -");
diff --git a/editors/patch.c b/editors/patch.c
index ab3af3c..b36980f 100644
--- a/editors/patch.c
+++ b/editors/patch.c
@@ -85,7 +85,6 @@ int patch_main(int argc UNUSED_PARAM, char **argv)
 	{
 		const char *p = "-1";
 		const char *i = "-"; /* compat */
-		const char *g; /* unimplemented, default is "0" */
 #if ENABLE_LONG_OPTS
 		static const char patch_longopts[] ALIGN1 =
 			"strip\0"   Required_argument "p"
@@ -97,7 +96,7 @@ int patch_main(int argc UNUSED_PARAM, char **argv)
 			;
 		applet_long_options = patch_longopts;
 #endif
-		opt = getopt32(argv, "p:i:RNg:", &p, &i, &g);
+		opt = getopt32(argv, "p:i:RNg:", &p, &i, NULL);
 		if (opt & OPT_R)
 			plus = '-';
 		patch_level = xatoi(p); /* can be negative! */
diff --git a/include/usage.h b/include/usage.h
index 77b7b99..44cc834 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -4406,9 +4406,9 @@
        "nameserver 10.0.0.1\n"
 
 #define tar_trivial_usage \
-       "-[" IF_FEATURE_TAR_CREATE("c") IF_FEATURE_SEAMLESS_GZ("z") \
+       "-[" IF_FEATURE_TAR_CREATE("c") "xt" IF_FEATURE_SEAMLESS_GZ("z") \
 	IF_FEATURE_SEAMLESS_BZ2("j") IF_FEATURE_SEAMLESS_LZMA("a") \
-	IF_FEATURE_SEAMLESS_Z("Z") IF_FEATURE_TAR_NOPRESERVE_TIME("m") "xtvO] " \
+	IF_FEATURE_SEAMLESS_Z("Z") IF_FEATURE_TAR_NOPRESERVE_TIME("m") "vO] " \
 	IF_FEATURE_TAR_FROM("[-X FILE] ") \
        "[-f TARFILE] [-C DIR] [FILE]..."
 #define tar_full_usage "\n\n" \
@@ -4417,7 +4417,8 @@
        "or list files from a tar file\n" \
      "\nOptions:" \
 	IF_FEATURE_TAR_CREATE( \
-     "\n	c	Create") \
+     "\n	c	Create" \
+	) \
      "\n	x	Extract" \
      "\n	t	List" \
      "\nArchive format selection:" \
@@ -4434,16 +4435,18 @@
      "\n	Z	Filter the archive through compress" \
 	) \
 	IF_FEATURE_TAR_NOPRESERVE_TIME( \
-     "\n	m	Do not extract files modified time" \
+     "\n	m	Do not restore mtime" \
 	) \
      "\nFile selection:" \
      "\n	f	Name of TARFILE or \"-\" for stdin" \
      "\n	O	Extract to stdout" \
 	IF_FEATURE_TAR_FROM( \
+	IF_FEATURE_TAR_LONG_OPTIONS( \
      "\n	exclude	File to exclude" \
+	) \
      "\n	X	File with names to exclude" \
 	) \
-     "\n	C	Change to directory DIR before operation" \
+     "\n	C	Change to DIR before operation" \
      "\n	v	Verbose" \
 
 #define tar_example_usage \
diff --git a/libbb/unicode.c b/libbb/unicode.c
index 9d316df..8004295 100644
--- a/libbb/unicode.c
+++ b/libbb/unicode.c
@@ -9,7 +9,10 @@
 #include "libbb.h"
 #include "unicode.h"
 
+/* If it's not a constant... */
+#ifndef unicode_status
 uint8_t unicode_status;
+#endif
 
 size_t FAST_FUNC bb_mbstrlen(const char *string)
 {