Revert lots of half-finished local debris I didn't mean to check in with Isaac's roadmap update.

Mercurial's "import" command is still broken, committing local tree changes to files that weren't even touched by the patch because the hg developers inisist, when I point out how stupid it is, that they meant to do that. (hg record can do hunks, but import can't even track _files_.)

7 files changed, 154 insertions, 421 deletions

diff --git a/toys/other/hello.c b/toys/other/hello.c
index b909ed53..eb80972e 100644
--- a/toys/other/hello.c
+++ b/toys/other/hello.c
@@ -8,28 +8,17 @@
 // Accept many different kinds of command line argument:
 
 USE_HELLO(NEWTOY(hello, "(walrus)(blubber):;(also):e@d*c#b:a", TOYFLAG_USR|TOYFLAG_BIN))
-USE_HELLO_ALIAS(NEWTOY(hello_alias, "b:dq", TOYFLAG_USR|TOYFLAG_BIN))
 
 config HELLO
   bool "hello"
   default n
   help
-    usage: hello [-a] [-b STRING] [-c NUMBER] [-d LIST] [-e COUNT] [...]
+    usage: hello [-a] [-b string] [-c number] [-d list] [-e count] [...]
 
     A hello world program.  You don't need this.
 
     Mostly used as an example/skeleton file for adding new commands,
     occasionally nice to test kernel booting via "init=/bin/hello".
-
-config HELLO_ALIAS
-  bool "hello_alias"
-  default n
-  depends on HELLO
-  help
-    usage: hello_alias [-dq] [-b NUMBER]
-
-    Example of a second command with different arguments in the same source
-    file as the first. Allows shared infrastructure not added to lib.
 */
 
 #define FOR_hello
@@ -38,19 +27,12 @@ config HELLO_ALIAS
 // Hello doesn't use these globals, they're here for example/skeleton purposes.
 
 GLOBALS(
-  union {
-    struct {
-      char *b_string;
-      long c_number;
-      struct arg_list *d_list;
-      long e_count;
-      char *also_string;
-      char *blubber_string;
-    } h;
-    struct {
-      long b_number;
-    } a;
-  };
+  char *b_string;
+  long c_number;
+  struct arg_list *d_list;
+  long e_count;
+  char *also_string;
+  char *blubber_string;
 
   int more_globals;
 )
@@ -65,25 +47,15 @@ void hello_main(void)
 
   if (toys.optflags) printf("flags=%x\n", toys.optflags);
   if (toys.optflags & FLAG_a) printf("Saw a\n");
-  if (toys.optflags & FLAG_b) printf("b=%s\n", TT.h.b_string);
-  if (toys.optflags & FLAG_c) printf("c=%ld\n", TT.h.c_number);
-  while (TT.h.d_list) {
-    printf("d=%s\n", TT.h.d_list->arg);
-    TT.h.d_list = TT.h.d_list->next;
+  if (toys.optflags & FLAG_b) printf("b=%s\n", TT.b_string);
+  if (toys.optflags & FLAG_c) printf("c=%ld\n", TT.c_number);
+  while (TT.d_list) {
+    printf("d=%s\n", TT.d_list->arg);
+    TT.d_list = TT.d_list->next;
   }
-  if (TT.h.e_count) printf("e was seen %ld times\n", TT.h.e_count);
+  if (TT.e_count) printf("e was seen %ld times\n", TT.e_count);
   for (optargs = toys.optargs; *optargs; optargs++)
     printf("optarg=%s\n", *optargs);
   if (toys.optflags & FLAG_walrus) printf("Saw --walrus\n");
-  if (TT.h.blubber_string) printf("--blubber=%s\n", TT.h.blubber_string);
-}
-
-#define CLEANUP_hello
-#define FOR_hello_alias
-#include "generated/flags.h"
-
-void hello_alias_main(void)
-{
-  printf("hello world %x\n", toys.optflags);
-  if (toys.optflags & FLAG_b) printf("b=%ld", TT.a.b_number);
+  if (TT.blubber_string) printf("--blubber=%s\n", TT.blubber_string);
 }
diff --git a/toys/other/vconfig.c b/toys/other/vconfig.c
index 5a737c78..d2422529 100644
--- a/toys/other/vconfig.c
+++ b/toys/other/vconfig.c
@@ -47,18 +47,6 @@ void vconfig_main(void)
   memset(&request, 0, sizeof(struct vlan_ioctl_args));
   cmd = toys.optargs[0];
 
-//add ADD_VLAN_CMD 4094 0     // ADD_VLAN_CMD
-//rem DEL_VLAN_CMD 0 0        // DEL_VLAN_CMD
-//set_ingress_map  INT_MAX 0  // SET_VLAN_INGRESS_PRIORITY_CMD
-//set_egress_map              // SET_VLAN_EGRESS_PRIORITY_CMD
-//GET_VLAN_INGRESS_PRIORITY_CMD,
-//GET_VLAN_EGRESS_PRIORITY_CMD,
-//set_name_type               // SET_VLAN_NAME_TYPE_CMD
-//set_flag                    // SET_VLAN_FLAG_CMD,
-//GET_VLAN_REALDEV_NAME_CMD,
-//GET_VLAN_VID_CMD
-
-
   if (!strcmp(cmd, "set_name_type")) {
     char *types[] = {"VLAN_PLUS_VID", "DEV_PLUS_VID", "VLAN_PLUS_VID_NO_PAD",
                      "DEV_PLUS_VID_NO_PAD"};
@@ -77,7 +65,7 @@ void vconfig_main(void)
   }
 
   // Store interface name
-  xstrncpy(request.device1, toys.optargs[1], 23);
+  xstrncpy(request.device1, toys.optargs[1], 16);
 
   if (!strcmp(cmd, "add")) {
     request.cmd = ADD_VLAN_CMD;
diff --git a/toys/pending/compress.c b/toys/pending/compress.c
index 48cec494..bb4af46c 100644
--- a/toys/pending/compress.c
+++ b/toys/pending/compress.c
@@ -5,8 +5,7 @@
  * The inflate/deflate code lives here, so the various things that use it
  * either live here or call these commands to pipe data through them.
  *
- * Divergence from posix: replace obsolete/patented "compress" with mutiplexer.
- * (gzip already replaces "uncompress".)
+ * Divergence from posix: replace obsolete "compress" with mutiplexer.
  *
  * See RFCs 1950 (zlib), 1951 (deflate), and 1952 (gzip)
  * LSB 4.1 has gzip, gunzip, and zcat
@@ -15,10 +14,8 @@
 // Accept many different kinds of command line argument.
 // Leave Lrg at end so flag values line up.
 
-USE_COMPRESS(NEWTOY(compress, "zcd9lrg[-cd][!zgLr]", TOYFLAG_USR|TOYFLAG_BIN))
-USE_COMPRESS(NEWTOY(gzip, USE_GZIP_D("d")"19dcflqStvgLRz[!gLRz]", TOYFLAG_USR|TOYFLAG_BIN))
-USE_DECOMPRESS(NEWTOY(zcat, 0, TOYFLAG_USR|TOYFLAG_BIN))
-USE_DECOMPRESS(NEWTOY(gunzip, "cflqStv", TOYFLAG_USR|TOYFLAG_BIN))
+USE_COMPRESS(NEWTOY(compress, "zcd9Lrg[-cd][!zgLr]", TOYFLAG_USR|TOYFLAG_BIN))
+USE_COMPRESS(NEWTOY(zcat, "aLrg[!aLrg]", TOYFLAG_USR|TOYFLAG_BIN))
 
 //zip unzip gzip gunzip zcat
 
@@ -26,114 +23,38 @@ config COMPRESS
   bool "compress"
   default n
   help
-    usage: compress [-zgLR19] [FILE]
-
-    Compress or decompress file (or stdin) using "deflate" algorithm.
-
-    -1	min compression
-    -9	max compression (default)
-    -g	gzip (default)
-    -L	zlib
-    -R	raw
-    -z	zip
-
-config GZIP
-  bool "gzip"
-  default y
-  depends on COMPRESS
-  help
-    usage: gzip [-19cfqStvzgLR] [FILE...]
-
-    Compess (deflate) file(s). With no files, compress stdin to stdout.
-
-    On successful decompression, compressed files are replaced with the
-    uncompressed version. The input file is removed and replaced with
-    a new file without the .gz extension (with same ownership/permissions).
-
-    -1	Minimal compression (fastest)
-    -9	Max compression (default)
-    -c	cat to stdout (act as zcat)
-    -f	force (if output file exists, input is tty, unrecognized extension)
-    -q	quiet (no warnings)
-    -S	specify exension (default .*)
-    -t	test compressed file(s)
-    -v	verbose (like -l, but compress files)
-
-    Compression type:
-    -g gzip (default)    -L zlib    -R raw    -z zip
-
-config GZIP_D
-  bool
-  default y
-  depends on GZIP && DECOMPRESS
-  help
-    usage: gzip [-d]
-
-    -d	decompress (act as gunzip)
-
-config DECOMPRESS
-  bool "decompress"
-  default n
-  help
     usage: compress [-zglrcd9] [FILE]
 
     Compress or decompress file (or stdin) using "deflate" algorithm.
 
-    -c	compress with -g gzip (default)  -l zlib  -r raw  -z zip
+    -c	compress with -g gzip (default)  -L zlib  -r raw  -z zip
     -d	decompress (autodetects type)
 
-
 config ZCAT
   bool "zcat"
-  default y
-  depends on DECOMPRESS
+  default n
+  depends on COMPRESS
   help
     usage: zcat [FILE...]
 
     Decompress deflated file(s) to stdout
-
-config GUNZIP
-  bool "gunzip"
-  default y
-  depends on DECOMPRESS
-  help
-    usage: gunzip [-cflqStv] [FILE...]
-
-    Decompess (deflate) file(s). With no files, compress stdin to stdout.
-
-    On successful decompression, compressed files are replaced with the
-    uncompressed version. The input file is removed and replaced with
-    a new file without the .gz extension (with same ownership/permissions).
-
-    -c	cat to stdout (act as zcat)
-    -f	force (output file exists, input is tty, unrecognized extension)
-    -l	list compressed/uncompressed/ratio/name for each input file.
-    -q	quiet (no warnings)
-    -S	specify exension (default .*)
-    -t	test compressed file(s)
-    -v	verbose (like -l, but decompress files)
 */
 
 #define FOR_compress
 #include "toys.h"
 
 GLOBALS(
-  // Huffman codes: base offset and extra bits tables (length and distance)
+  // base offset and extra bits tables (length and distance)
   char lenbits[29], distbits[30];
   unsigned short lenbase[29], distbase[30];
   void *fixdisthuff, *fixlithuff;
 
-  // CRC
   void (*crcfunc)(char *data, int len);
-  unsigned crc;
-
-  // Compressed data buffer
-  char *data;
-  unsigned pos, len;
-  int fd;
+  unsigned crc, len;
 
-  // Tables only used for deflation
-  unsigned short *head, *chain;
+  char *outbuf;
+  unsigned outlen;
+  int outfd;
 )
 
 // little endian bit buffer
@@ -204,12 +125,12 @@ unsigned bitbuf_get(struct bitbuf *bb, int bits)
   return result;
 }
 
-static void data_crc(char sym)
+static void outbuf_crc(char sym)
 {
-  TT.data[TT.pos++ & 32767] = sym;
+  TT.outbuf[TT.outlen++ & 32767] = sym;
 
-  if (!(TT.pos & 32767)) {
-    xwrite(TT.fd, TT.data, 32768);
+  if (!(TT.outlen & 32767)) {
+    xwrite(TT.outfd, TT.outbuf, 32768);
     if (TT.crcfunc) TT.crcfunc(0, 32768);
   }
 }
@@ -225,7 +146,7 @@ struct huff {
 
 // Create simple huffman tree from array of bit lengths.
 
-// The symbols in the huffman trees are sorted (first by bit length
+// The symbols in deflate's huffman trees are sorted (first by bit length
 // of the code to reach them, then by symbol number). This means that given
 // the bit length of each symbol, we can construct a unique tree.
 static void len2huff(struct huff *huff, char bitlen[], int len)
@@ -264,33 +185,6 @@ static unsigned huff_and_puff(struct bitbuf *bb, struct huff *huff)
   return huff->symbol[start + offset];
 }
 
-// For deflate, TT.len = input read, TT.pos = input consumed
-static void deflate(struct bitbuf *bb)
-{
-  char *data = TT.data;
-  int len, end = 0;
-
-  TT.crc = ~0;
-
-  // Read next half-window of data if we haven't hit EOF yet.
-read_more:
-  len = readall(TT.fd, data + (TT.len & 32768), 32768);
-fprintf(stderr, "read %d@%d\n", len, TT.pos);
-  if (len < 0) perror_exit("read"); // todo: add filename
-  if (len != 32768) end++;
-  TT.len += len;
-
-  // repeat until spanked
-  while (TT.pos != TT.len) {
-    unsigned pos = TT.pos & 65535;
-
-    if (!(pos & 32767) && !end) goto read_more;
-
-    TT.pos++;
-  }
-fprintf(stderr, "numberwang %d\n", TT.pos);
-}
-
 // Decompress deflated data from bitbuf to filehandle.
 static void inflate(struct bitbuf *bb)
 {
@@ -322,7 +216,7 @@ static void inflate(struct bitbuf *bb)
         // dump bytes until done or end of current bitbuf contents
         if (bblen > len) bblen = len;
         pos = bblen;
-        while (pos--) data_crc(*(p++));
+        while (pos--) outbuf_crc(*(p++));
         bitbuf_skip(bb, bblen << 3);
         len -= bblen;
       }
@@ -382,7 +276,7 @@ static void inflate(struct bitbuf *bb)
         int sym = huff_and_puff(bb, lithuff);
 
         // Literal?
-        if (sym < 256) data_crc(sym);
+        if (sym < 256) outbuf_crc(sym);
 
         // Copy range?
         else if (sym > 256) {
@@ -392,9 +286,9 @@ static void inflate(struct bitbuf *bb)
           len = TT.lenbase[sym] + bitbuf_get(bb, TT.lenbits[sym]);
           sym = huff_and_puff(bb, disthuff);
           dist = TT.distbase[sym] + bitbuf_get(bb, TT.distbits[sym]);
-          sym = TT.pos & 32767;
+          sym = TT.outlen & 32767;
 
-          while (len--) data_crc(TT.data[(TT.pos-dist) & 32767]);
+          while (len--) outbuf_crc(TT.outbuf[(TT.outlen-dist) & 32767]);
 
         // End of block
         } else break;
@@ -405,25 +299,18 @@ static void inflate(struct bitbuf *bb)
     if (final) break;
   }
 
-  if (TT.pos & 32767) {
-    xwrite(TT.fd, TT.data, TT.pos & 32767);
-    if (TT.crcfunc) TT.crcfunc(0, TT.pos & 32767);
+  if (TT.outlen & 32767) {
+    xwrite(TT.outfd, TT.outbuf, TT.outlen & 32767);
+    if (TT.crcfunc) TT.crcfunc(0, TT.outlen & 32767);
   }
 }
 
-static void init_deflate(int compress)
+static void init_deflate(void)
 {
-  int i, n = 1, size = 32768;
+  int i, n = 1;
 
   // Ye olde deflate window
-  TT.data = xmalloc(32768*(compress+1));
-  if (compress) {
-    TT.head = (unsigned short *)(TT.data+65536);
-    TT.chain = TT.head +
-
-HASH_SIZE = 1 << 15;
-
-  }
+  TT.outbuf = xmalloc(32768);
 
   // Calculate lenbits, lenbase, distbits, distbase
   *TT.lenbase = 3;
@@ -478,22 +365,17 @@ void gzip_crc(char *data, int len)
   unsigned crc, *crc_table = (unsigned *)(toybuf+sizeof(toybuf)-1024);
 
   crc = TT.crc;
-  for (i=0; i<len; i++) crc = crc_table[(crc^TT.data[i])&0xff] ^ (crc>>8);
+  for (i=0; i<len; i++) crc = crc_table[(crc^TT.outbuf[i])&0xff] ^ (crc>>8);
   TT.crc = crc;
   TT.len += len;
 }
 
-static void do_compress(int fd, char *name)
-{
-  xwrite(1, "\x1f\x8b\x08\0\0\0\0\0\x02\xff", 10);
-}
-
 static void do_zcat(int fd, char *name)
 {
   struct bitbuf *bb = bitbuf_init(fd, sizeof(toybuf));
 
   if (!is_gzip(bb)) error_exit("not gzip");
-  TT.fd = 1;
+  TT.outfd = 1;
 
   // Use last 1k of toybuf for little endian crc table
   crc_init((unsigned *)(toybuf+sizeof(toybuf)-1024), 1);
@@ -516,20 +398,13 @@ void compress_main(void)
   zcat_main();
 }
 
-#define CLEANUP_compress
-#define FOR_zcat
-#include "generated/flags.h"
+//#define CLEANUP_compress
+//#define FOR_zcat
+//#include "generated/flags.h"
 
 void zcat_main(void)
 {
-  init_deflate(0);
+  init_deflate();
 
   loopfiles(toys.optargs, do_zcat);
 }
-
-//void gunzip_main(void)
-//{
-//  init_deflate(0);
-//
-//  loopfiles(toys.optargs, do_zcat);
-//}
diff --git a/toys/pending/init.c b/toys/pending/init.c
index ca3c6cc4..8199e748 100644
--- a/toys/pending/init.c
+++ b/toys/pending/init.c
@@ -13,10 +13,7 @@ config INIT
   help
     usage: init
 
-    System V style init.
-
-    First program to run (as PID 1) when the system comes up, reading
-    /etc/inittab to determine actions.
+    init the system.
 */
 
 #include "toys.h"
@@ -44,9 +41,8 @@ int caught_signal;
 static void initialize_console(void)
 {
   int fd;
-  char *p = getenv("CONSOLE");
+  char *p = (p = getenv("CONSOLE")) ? p : getenv("console");
 
-  if (!p) p = getenv("console");
   if (!p) {
     fd = open("/dev/null", O_RDWR);
     if (fd >= 0) {
@@ -66,11 +62,11 @@ static void initialize_console(void)
   if (!getenv("TERM")) putenv("TERM=linux");
 }
 
-static void reset_term(int fd)
+static void set_sane_term(void)
 {
   struct termios terminal;
  
-  tcgetattr(fd, &terminal);
+  tcgetattr(0, &terminal);
   terminal.c_cc[VINTR] = 3;    //ctrl-c
   terminal.c_cc[VQUIT] = 28;   /*ctrl-\*/
   terminal.c_cc[VERASE] = 127; //ctrl-?
@@ -81,16 +77,12 @@ static void reset_term(int fd)
   terminal.c_cc[VSUSP] = 26;   //ctrl-z
 
   terminal.c_line = 0;
-  terminal.c_cflag &= CRTSCTS|PARODD|PARENB|CSTOPB|CSIZE|CBAUDEX|CBAUD;
-  terminal.c_cflag |= CLOCAL|HUPCL|CREAD;
-
-  //enable start/stop input and output control + map CR to NL on input
-  terminal.c_iflag = IXON|IXOFF|ICRNL;
-
-  //Map NL to CR-NL on output
-  terminal.c_oflag = ONLCR|OPOST;
+  terminal.c_cflag = terminal.c_cflag&(CRTSCTS|PARODD|PARENB|CSTOPB|CSIZE|CBAUDEX|CBAUD);
+  terminal.c_cflag = terminal.c_cflag|(CLOCAL|HUPCL|CREAD);
+  terminal.c_iflag = IXON|IXOFF|ICRNL;//enable start/stop input and output control + map CR to NL on input
+  terminal.c_oflag = ONLCR|OPOST;//Map NL to CR-NL on output
   terminal.c_lflag = IEXTEN|ECHOKE|ECHOCTL|ECHOK|ECHOE|ECHO|ICANON|ISIG;
-  tcsetattr(fd, TCSANOW, &terminal);
+  tcsetattr(0, TCSANOW, &terminal);
 }
 
 static void add_new_action(uint8_t action,char *command,char *term)
@@ -258,7 +250,7 @@ static pid_t final_run(struct action_list_seed *x)
       dup2(0, 2);
     }
   }
-  reset_term(0);
+  set_sane_term();
   run_command(x->command);
   _exit(-1);
 }
@@ -289,7 +281,6 @@ static void waitforpid(pid_t pid)
     if (kill(y, 0)) break;
   }
 }
-
 static void run_action_from_list(int action)
 {
   pid_t pid;
@@ -311,7 +302,14 @@ static void set_default(void)
 {
   sigset_t signal_set_c;
 
-  sigatexit(SIG_DFL);
+  signal(SIGUSR1,SIG_DFL);
+  signal(SIGUSR2,SIG_DFL);
+  signal(SIGTERM,SIG_DFL);
+  signal(SIGQUIT,SIG_DFL);
+  signal(SIGINT,SIG_DFL);
+  signal(SIGHUP,SIG_DFL);
+  signal(SIGTSTP,SIG_DFL);
+  signal(SIGSTOP,SIG_DFL);
   sigfillset(&signal_set_c);
   sigprocmask(SIG_UNBLOCK,&signal_set_c, NULL);
 
@@ -359,7 +357,6 @@ static void halt_poweroff_reboot_handler(int sig_no)
 
   while(1) sleep(1);
 }
-
 static void restart_init_handler(int sig_no)
 {
   struct action_list_seed *x;
@@ -389,7 +386,7 @@ static void restart_init_handler(int sig_no)
       } else {
         dup2(0, 1);
         dup2(0, 2);
-        reset_term(0);
+        set_sane_term();
         run_command(x->command);
       }
     }
@@ -443,7 +440,7 @@ void init_main(void)
   if (getpid() != 1) error_exit("Already running"); 
   printf("Started init\n"); 
   initialize_console();
-  reset_term(0);
+  set_sane_term();
 
   if (chdir("/")) perror_exit("Can't cd to /");
   setsid();
@@ -452,7 +449,6 @@ void init_main(void)
   putenv("PATH=/sbin:/usr/sbin:/bin:/usr/bin");
   putenv("SHELL=/bin/sh");
   putenv("USER=root");
-
   inittab_parsing();  
   signal(SIGUSR1, halt_poweroff_reboot_handler);//halt
   signal(SIGUSR2, halt_poweroff_reboot_handler);//poweroff
diff --git a/toys/posix/date.c b/toys/posix/date.c
index a4e5e27c..e1ba636d 100644
--- a/toys/posix/date.c
+++ b/toys/posix/date.c
@@ -7,39 +7,21 @@
  * Note: setting a 2 year date is 50 years back/forward from today,
  * not posix's hardwired magic dates.
 
-USE_DATE(NEWTOY(date, "d:s:r:u", TOYFLAG_BIN))
+USE_DATE(NEWTOY(date, "r:u", TOYFLAG_BIN))
 
 config DATE
   bool "date"
   default y
   help
-    usage: date [-u] [-r FILE] [-d DATE] [+DISPLAY_FORMAT] [-s SET_FORMAT] [SET]
+    usage: date [-u] [-r FILE] [+FORMAT] | mmddhhmm[[cc]yy[.ss]]
 
-    Set/get the current date/time. With no SET shows the current date.
+    Set/get the current date/time.
 
-    Default SET format is "MMDDhhmm[[CC]YY][.ss]", that's (2 digits each)
-    month, day, hour (0-23), and minute. Optionally century, year, and second.
+    Setting the date requires month, day, hour (0-23), and minute, each
+    two digits. It can optionally include year, century, and .seconds.
 
-    -d	Show DATE instead of current time (convert date format)
-    -r	Use modification time of FILE instead of current date
-    -s	+FORMAT for SET or -d (instead of MMDDhhmm[[CC]YY][.ss])
-    -u	Use UTC instead of current timezone
-
-    +FORMAT specifies display format string using these escapes:
-
-    %% literal %             %n newline              %t tab
-    %S seconds (00-60)       %M minute (00-59)       %m month (01-12)
-    %H hour (0-23)           %I hour (01-12)         %p AM/PM
-    %y short year (00-99)    %Y year                 %C century
-    %a short weekday name    %A weekday name         %u day of week (1-7, 1=mon)
-    %b short month name      %B month name           %Z timezone name
-    %j day of year (001-366) %d day of month (01-31) %e day of month ( 1-31)
-
-    %U Week of year (0-53 start sunday)   %W Week of year (0-53 start monday)
-    %V Week of year (1-53 start monday, week < 4 days not part of this year) 
-
-    %D = "%m/%d/%y"    %r = "%I : %M : %S %p"   %T = "%H:%M:%S"   %h = "%b"
-    %x locale date     %X locale time           %c locale date/time
+    -u	Use UTC timezone instead of current
+    -r	Use date from FILE instead of current date
 */
 
 #define FOR_date
@@ -47,95 +29,72 @@ config DATE
 
 GLOBALS(
   char *file;
-  char *setfmt;
-  char *showdate;
 )
 
-// Handle default posix date format: mmddhhmm[[cc]yy]
-// returns 0 success, nonzero for error
-int parse_posixdate(char *str, struct tm *tm)
-{
-  struct timeval tv;
-  int len;
-
-  len = 0;
-  sscanf(str, "%2u%2u%2u%2u%n", &tm.tm_mon, &tm.tm_mday, &tm.tm_hour,
-    &tm.tm_min, &len);
-  if (len != 8) goto bad_date;
-  str += len;
-  tm.tm_mon--;
-
-  // If year specified, overwrite one we fetched earlier
-  if (*str && *str != '.') {
-    unsigned year, r1 = tm.tm_year % 100, r2 = (tm.tm_year + 50) % 100,
-      century = tm.tm_year - r1;
-
-    len = 0;
-    sscanf(str, "%u%n", &year, &len);
-    if (len == 4) year -= 1900;
-    else if (len != 2) goto bad_date;
-    str += len;
-
-    // 2 digit years, next 50 years are "future", last 50 years are "past".
-    // A "future" date in past is a century ahead.
-    // A non-future date in the future is a century behind.
-    if ((r1 < r2) ? (r1 < year && year < r2) : (year < r1 || year > r2)) {
-      if (year < r1) year += 100;
-    } else if (year > r1) year -= 100;
-    tm.tm_year = year + century;
-  }
-  if (*str == '.') {
-    len = 0;
-    sscanf(str, ".%u%n", &tm.tm_sec, &len);
-    str += len;
-  }
-
-  return *str;
-}
-
-
 void date_main(void)
 {
-  char *setdate = *toys.optargs, *format_string = "%a %b %e %H:%M:%S %Z %Y",
-       *tz;
+  const char *format_string = "%a %b %e %H:%M:%S %Z %Y";
   time_t now = time(NULL);
   struct tm tm;
 
-  // We can't just pass a timezone to mktime because posix.
-  if (toys.optflags & FLAG_u) {
-    tz = CFG_TOYBOX_FREE ? getenv("TZ") : 0;
-    setenv("TZ", "UTC", 1);
-    tzset();
-  }
-
   if (TT.file) {
     struct stat st;
 
     xstat(TT.file, &st);
     now = st.st_mtim.tv_sec;
-  } else if (TT.showdate) {
-    if (TT.setfmt) {
-      char *s = strptime(TT.showdate, TT.setfmt, &tm);
-
-      if (!s || !*s) goto bad_date;
-    } else if (parse_posixdate(TT.showdate, &tm)) goto bad_date;
-  } else localtime_r(&now, &tm);
+  }
+  ((toys.optflags & FLAG_u) ? gmtime_r : localtime_r)(&now, &tm);
 
-  // Fall through if no arguments
-  if (!setdate);
   // Display the date?
-  else if (*setdate == '+') {
-    format_string = toys.optargs[0]+1;
-    setdate = toys.optargs[1];
+  if (!toys.optargs[0] || toys.optargs[0][0] == '+') {
+    if (toys.optargs[0]) format_string = toys.optargs[0]+1;
+    if (!strftime(toybuf, sizeof(toybuf), format_string, &tm)) goto bad_format;
+
+    puts(toybuf);
 
   // Set the date
-  } else if (setdate) {
-    if (parse_posixdate(setdate, tm)) goto bad_date;
+  } else {
+    struct timeval tv;
+    char *s = *toys.optargs;
+    int len;
+
+    // Date format: mmddhhmm[[cc]yy]
+    len = 0;
+    sscanf(s, "%2u%2u%2u%2u%n", &tm.tm_mon, &tm.tm_mday, &tm.tm_hour,
+      &tm.tm_min, &len);
+    if (len != 8) goto bad_date;
+    s += len;
+    tm.tm_mon--;
+
+    // If year specified, overwrite one we fetched earlier
+    if (*s && *s != '.') {
+      unsigned year, r1 = tm.tm_year % 100, r2 = (tm.tm_year + 50) % 100,
+        century = tm.tm_year - r1;
+
+      len = 0;
+      sscanf(s, "%u%n", &year, &len);
+      if (len == 4) year -= 1900;
+      else if (len != 2) goto bad_date;
+      s += len;
+
+      // 2 digit years, next 50 years are "future", last 50 years are "past".
+      // A "future" date in past is a century ahead.
+      // A non-future date in the future is a century behind.
+      if ((r1 < r2) ? (r1 < year && year < r2) : (year < r1 || year > r2)) {
+        if (year < r1) year += 100;
+      } else if (year > r1) year -= 100;
+      tm.tm_year = year + century;
+    }
+    if (*s == '.') {
+      len = 0;
+      sscanf(s, ".%u%n", &tm.tm_sec, &len);
+      s += len;
+    }
+    if (*s) goto bad_date;
 
     if (toys.optflags & FLAG_u) {
-      // We can't just pass a timezone to mktime because posix.
+      // Get the UTC version of a struct tm
       char *tz = CFG_TOYBOX_FREE ? getenv("TZ") : 0;
-
       setenv("TZ", "UTC", 1);
       tzset();
       tv.tv_sec = mktime(&tm);
@@ -148,18 +107,11 @@ void date_main(void)
     if (tv.tv_sec == (time_t)-1) goto bad_date;
 
     tv.tv_usec = 0;
+    if (!strftime(toybuf, sizeof(toybuf), format_string, &tm)) goto bad_format;
+    puts(toybuf);
     if (settimeofday(&tv, NULL) < 0) perror_msg("cannot set date");
   }
 
-  if (toys.optflags & FLAG_u) {
-    if (tz) setenv("TZ", tz, 1);
-    else unsetenv("TZ");
-    tzset();
-  }
-
-  if (!strftime(toybuf, sizeof(toybuf), format_string, &tm)) goto bad_format;
-  puts(toybuf);
-
   return;
 
 bad_date:
diff --git a/toys/posix/du.c b/toys/posix/du.c
index 64ba0517..96922bca 100644
--- a/toys/posix/du.c
+++ b/toys/posix/du.c
@@ -54,8 +54,18 @@ static void print(long long size, struct dirtree *node)
 
   if (TT.maxdepth && TT.depth > TT.maxdepth) return;
 
-  if (toys.optflags & FLAG_h) printf("%s", human_readable(size));
-  else {
+  if (toys.optflags & FLAG_h) {
+    char buf[32];
+    int index, sz;
+
+    for (index = 0; 1024 < size>>(10*index); index++);
+    sz = size>>(10*index);
+    if (sz < 10) {
+      sprintf(buf, "%llu", size>>(10*(index-1)));
+      printf("%c.%c", buf[0], buf[1]);
+    } else printf("%d", sz);
+    if (index) printf("%c", " KMGTPE"[index]);
+  } else {
     int bits = 10;
 
     if (toys.optflags & FLAG_K) bits = 9;
diff --git a/toys/posix/grep.c b/toys/posix/grep.c
index 2837cc24..aba70878 100644
--- a/toys/posix/grep.c
+++ b/toys/posix/grep.c
@@ -4,7 +4,7 @@
  *
  * See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/grep.html
 
-USE_GREP(NEWTOY(grep, "A#B#C#ZzEFHabhinorsvwclqe*f*m#x[!wx][!EFw]", TOYFLAG_BIN))
+USE_GREP(NEWTOY(grep, "ZzEFHabhinorsvwclqe*f*m#x[!wx][!EFw]", TOYFLAG_BIN))
 USE_GREP(OLDTOY(egrep, grep, OPTSTR_grep, TOYFLAG_BIN))
 USE_GREP(OLDTOY(fgrep, grep, OPTSTR_grep, TOYFLAG_BIN))
 
@@ -46,67 +46,40 @@ GLOBALS(
   long m;
   struct arg_list *f;
   struct arg_list *e;
-  long C;
-  long B;
-  long A;
 
   struct arg_list *regex;
-  struct double_list *blist;
 )
 
-struct dlist_off {
-  char *next, *prev;
-  long offset;
-  char *data;
-};
-
 static void do_grep(int fd, char *name)
 {
   FILE *file = fdopen(fd, "r");
   long offset = 0;
-  int lcount = 0, mcount = 0, which = toys.optflags & FLAG_w ? 2 : 0,
-      blines = 0, alines = 0, dash = 0;
+  int lcount = 0, mcount = 0, which = toys.optflags & FLAG_w ? 2 : 0;
   char indelim = '\n' * !(toys.optflags&FLAG_z),
        outdelim = '\n' * !(toys.optflags&FLAG_Z);
 
   if (!fd) name = "(standard input)";
 
-fprintf(stderr, "boo\n");
   if (!file) {
     perror_msg("%s", name);
     return;
   }
 
-  // Loop through lines of input
   for (;;) {
-    char *oline = 0, *line = 0, *start;
+    char *line = 0, *start;
     regmatch_t matches[3];
     size_t unused;
     long len;
     int mmatch = 0;
 
-    // Read next line of input
     lcount++;
     if (0 > (len = getdelim(&line, &unused, indelim, file))) break;
     if (line[len-1] == indelim) line[len-1] = 0;
-fprintf(stderr, "line=%s\n", line);
-    // Unconditionally add line to blist so output can always just dump blist.
-    dlist_add(&TT.blist, line);
-fprintf(stderr, "added=%s\n", TT.blist->data);
-fprintf(stderr, "prev=%s\n", TT.blist->prev->data);
-    if (blines <= TT.B) blines++;
-    else {
-      struct double_list *temp = dlist_pop(&TT.blist);
-fprintf(stderr, "bird=%s\n", temp->data);
-      free(temp->data);
-      free(temp);
-    }
 
     start = line;
 
-    // Loop to match multiple times within the same line (if necessary)
-    for (;;) {
-fprintf(stderr, "match?\n");
+    for (;;)
+    {
       int rc = 0, skip = 0;
 
       if (toys.optflags & FLAG_F) {
@@ -159,51 +132,30 @@ fprintf(stderr, "match?\n");
         }
         matches[which].rm_so = 0;
       } else if (rc) break;
-fprintf(stderr, "got match %s\n", line);
-      // We got a match, figure out how to display it
+
       mmatch++;
       toys.exitval = 0;
       if (toys.optflags & FLAG_q) xexit();
       if (toys.optflags & FLAG_l) {
         printf("%s%c", name, outdelim);
-        goto finish;
+        free(line);
+        fclose(file);
+        return;
       }
-
-      line = 0;
-fprintf(stderr, "here=%s\n", TT.blist->prev->data);
-      // Yes, -o sometimes counts things as a match (-c) but doesn't display it
       if (toys.optflags & FLAG_o)
         if (matches[which].rm_eo == matches[which].rm_so)
           break;
 
-// List of lines that DIDN'T match, print backlog?
-// Except this includes the one we just matched...?
-      while (TT.blist) {
-        struct double_list *dlist = dlist_pop(&TT.blist);
-        char *ll = dlist->data;
-fprintf(stderr, "popped %s\n", ll);
-        if (dash) printf("--%c", outdelim);
-        dash = 0;
-
-        if (!(toys.optflags & FLAG_c)) {
-          if (toys.optflags & FLAG_H) printf("%s:", name);
-          if (toys.optflags & FLAG_n) printf("%d:", lcount);
-          if (toys.optflags & FLAG_b)
-            printf("%ld:", offset + (start - dlist->data) +
-                ((toys.optflags & FLAG_o) ? matches[which].rm_so : 0));
-          if (!(toys.optflags & FLAG_o)) xprintf("%s%c", dlist->data, outdelim);
-          else if (!TT.blist) {
-
-// TODO: FLAG_o prints multiple times, can't free it yet?
-            xprintf("%.*s%c", matches[which].rm_eo - matches[which].rm_so,
-                    start + matches[which].rm_so, outdelim);
-            line = dlist->data;
-          }
-        }
-        if (oline && !TT.blist) TT.blist = dlist;
+      if (!(toys.optflags & FLAG_c)) {
+        if (toys.optflags & FLAG_H) printf("%s:", name);
+        if (toys.optflags & FLAG_n) printf("%d:", lcount);
+        if (toys.optflags & FLAG_b)
+          printf("%ld:", offset + (start-line) +
+              ((toys.optflags & FLAG_o) ? matches[which].rm_so : 0));
+        if (!(toys.optflags & FLAG_o)) xprintf("%s%c", line, outdelim);
         else {
-          free(dlist->data);
-          free(dlist);
+          xprintf("%.*s%c", matches[which].rm_eo - matches[which].rm_so,
+                  start + matches[which].rm_so, outdelim);
         }
       }
 
@@ -211,7 +163,7 @@ fprintf(stderr, "popped %s\n", ll);
       if (!(toys.optflags & FLAG_o) || !*start) break;
     }
     offset += len;
-fprintf(stderr, "Spacious skies\n");
+
     free(line);
 
     if (mmatch) mcount++;
@@ -223,14 +175,6 @@ fprintf(stderr, "Spacious skies\n");
     xprintf("%d%c", mcount, outdelim);
   }
 
-finish:
-  while (CFG_TOYBOX_FREE && TT.blist) {
-    struct double_list *dlist = dlist_pop(&TT.blist);
-
-    free(dlist->data);
-    free(dlist);
-  }
-
   // loopfiles will also close the fd, but this frees an (opaque) struct.
   fclose(file);
 }
@@ -329,10 +273,6 @@ void grep_main(void)
     toys.optc--;
   }
 
-  if (!TT.A) TT.A = TT.C;
-  if (!TT.B) TT.B = TT.C;
-  if (toys.optflags & (FLAG_l|FLAG_o)) TT.B = 0; // avoid memory leak
-
   parse_regex();
 
   if (!(toys.optflags & FLAG_h) && toys.optc>1) toys.optflags |= FLAG_H;