Replace COSMO define with _COSMO_SOURCE

This change might cause ABI breakages for /opt/cosmos. It's needed to
help us better conform to header declaration practices.

examples/ls.c

@@ -49,7 +49,7 @@ void List(const char *path) {
   const char *vpath;
   if (strcmp(path, ".") == 0) {
     vpath = "";
-  } else if (!_endswith(path, "/")) {
+  } else if (!endswith(path, "/")) {
     vpath = _gc(xasprintf("%s/", path));
   } else {
     vpath = path;

examples/nesemu1.cc

@@ -28,6 +28,7 @@
 #include "libc/mem/arraylist2.internal.h"
 #include "libc/mem/mem.h"
 #include "libc/runtime/runtime.h"
+#include "libc/runtime/zipos.internal.h"
 #include "libc/sock/sock.h"
 #include "libc/sock/struct/pollfd.h"
 #include "libc/stdio/stdio.h"
@@ -43,7 +44,6 @@
 #include "libc/x/xasprintf.h"
 #include "libc/x/xsigaction.h"
 #include "libc/zip.internal.h"
-#include "libc/runtime/zipos.internal.h"
 #include "third_party/getopt/getopt.internal.h"
 #include "third_party/libcxx/vector"
 #include "tool/viz/lib/knobs.h"
@@ -1676,7 +1676,7 @@ char* GetLine(void) {
   static char* line;
   static size_t linesize;
   if (getline(&line, &linesize, stdin) > 0) {
-    return _chomp(line);
+    return chomp(line);
   } else {
     return NULL;
   }

examples/ttyinfo.c

@@ -147,12 +147,12 @@ int main(int argc, char *argv[]) {
     if (iscntrl(code[0]) && !code[1]) {
       printf("is CTRL-%c a.k.a. ^%c\r\n", CTRL(code[0]), CTRL(code[0]));
       if (code[0] == CTRL('C') || code[0] == CTRL('D')) break;
-    } else if (_startswith(code, "\e[") && _endswith(code, "R")) {
+    } else if (startswith(code, "\e[") && endswith(code, "R")) {
       yn = 1, xn = 1;
       sscanf(code, "\e[%d;%dR", &yn, &xn);
       printf("inband signalling says terminal size is %d×%d\r\n", xn, yn);
-    } else if (_startswith(code, "\e[<") &&
-               (_endswith(code, "m") || _endswith(code, "M"))) {
+    } else if (startswith(code, "\e[<") &&
+               (endswith(code, "m") || endswith(code, "M"))) {
       e = 0, y = 1, x = 1;
       sscanf(code, "\e[<%d;%d;%d%c", &e, &y, &x, &c);
       printf("mouse %s at %d×%d\r\n", describemouseevent(e | (c == 'm') << 2),

examples/wall.c

@@ -80,7 +80,7 @@ char *GetTime(void) {
   struct timespec ts;
   clock_gettime(0, &ts);
   localtime_r(&ts.tv_sec, &tm);
-  return _chomp(asctime(&tm));
+  return chomp(asctime(&tm));
 }
 
 int main(int argc, char *argv[]) {

examples/x86split.c

@@ -1,89 +0,0 @@
-#if 0
-/*─────────────────────────────────────────────────────────────────╗
-│ To the extent possible under law, Justine Tunney has waived      │
-│ all copyright and related or neighboring rights to this file,    │
-│ as it is written in the following disclaimers:                   │
-│   • http://unlicense.org/                                        │
-│   • http://creativecommons.org/publicdomain/zero/1.0/            │
-╚─────────────────────────────────────────────────────────────────*/
-#endif
-#include "libc/errno.h"
-#include "libc/runtime/runtime.h"
-#include "libc/stdio/stdio.h"
-#include "libc/str/str.h"
-#include "libc/sysv/errfuns.h"
-#include "third_party/xed/x86.h"
-
-/**
- * @fileoverview x86 instruction length decoder by way of hex pipe.
- *
- * Here's an example of how you can use it to decode a NOP stream:
- *
- *     $ make -j8 o//examples/x86split.com
- *     $ echo 909090 | o//examples/x86split.com
- *     90
- *     90
- *     90
- *
- * If there was a XOR instruction in there, it'd do this:
- *
- *     $ make -j8 o//examples/x86split.com
- *     $ echo 904531FF90 | o//examples/x86split.com
- *     90                     # NOP
- *     4531FF                 # XOR R15D,R15D
- *     90                     # NOP
- *
- * Now that you're able to split x86 instructions the rest is easy.
- */
-
-int fgethex(FILE *f) {
-  int o, t = -1;
-  while (!((o = fgetc(f)) & ~0xFF)) {
-    switch (t) {
-      case -1:
-        t = isxdigit(o) ? hextoint(o) : -1;
-        break;
-      default:
-        if (isxdigit(o)) {
-          return t * 16 + hextoint(o);
-        }
-        break;
-    }
-  }
-  if (t >= 0) return einval();
-  return -1;
-}
-
-int main(int argc, char *argv[argc]) {
-  int err;
-  unsigned c, i, j, l;
-  struct XedDecodedInst xedd;
-  unsigned char buf[XED_MAX_INSTRUCTION_BYTES];
-  memset(buf, 0, sizeof(buf));
-  for (i = 0;;) {
-    if (i < XED_MAX_INSTRUCTION_BYTES) {
-      c = fgethex(stdin);
-      if (c != -1) {
-        buf[i++] = c;
-        continue;
-      } else if (i == 0) {
-        break;
-      }
-    }
-    if ((err = xed_instruction_length_decode(
-             xed_decoded_inst_zero_set_mode(&xedd, XED_MACHINE_MODE_LONG_64),
-             buf, i))) {
-      errno = err;
-      break;
-    }
-    l = xedd.length;
-    if (l <= 0 || l > i) abort();
-    for (j = 0; j < l; ++j) {
-      fputc("0123456789ABCDEF"[(buf[j] & 0xf0) >> 4], stdout);
-      fputc("0123456789ABCDEF"[(buf[j] & 0x0f) >> 0], stdout);
-    }
-    putchar('\n');
-    memcpy(&buf[0], &buf[l], i -= l);
-  }
-  return errno;
-}