Make improvements

- Fix build flakes
- Polyfill SIGWINCH on Windows
- Fix an execve issue on Windows
- Make strerror show more information
- Improve cmd.exe setup/teardown on Windows
- Support bracketed paste mode in Blinkenlights
- Show keyboard shortcuts in Blinkenlights status bar
- Fixed copy_file_range() and copyfile() w/ zip filesystem
- Size optimize GetDosArgv() to keep life.com 12kb in size
- Improve Blinkenlights ability to load weird ELF executables
- Fix program_executable_name and add GetInterpreterExecutableName
- Make Python in tiny mode fail better if docstrings are requested
- Update Python test exclusions in tiny* modes such as tinylinux
- Add bulletproof unbreakable kprintf() troubleshooting function
- Remove "oldskool" keyword from ape.S for virus scanners
- Fix issue that caused backtraces to not print sometimes
- Improve Blinkenlights serial uart character i/o
- Make clock_gettime() not clobber errno on xnu
- Improve sha256 cpuid check for old computers
- Integrate some bestline linenoise fixes
- Show runit process names better in htop
- Remove SIGPIPE from ShowCrashReports()
- Make realpath() not clobber errno
- Avoid attaching GDB on non-Linux
- Improve img.com example

tool/build/lib/pty.c

@@ -1167,10 +1167,45 @@ ssize_t PtyWrite(struct Pty *pty, const void *data, size_t n) {
 }
 
 ssize_t PtyWriteInput(struct Pty *pty, const void *data, size_t n) {
-  PtyConcatInput(pty, data, n);
-  if (!(pty->conf & kPtyNoecho)) {
-    PtyWrite(pty, data, n);
+  int c;
+  bool cr;
+  char *p;
+  const char *q;
+  size_t i, j, m;
+  q = data;
+  p = pty->input.p;
+  i = pty->input.i;
+  m = pty->input.n;
+  if (i + n * 2 + 1 > m) {
+    m = MAX(m, 8);
+    do m += m >> 1;
+    while (i + n * 2 + 1 > m);
+    if (!(p = realloc(p, m))) {
+      return -1;
+    }
+    pty->input.p = p;
+    pty->input.n = m;
   }
+  cr = i && p[i - 1] == '\r';
+  for (j = 0; j < n; ++j) {
+    c = q[j] & 255;
+    if (c == '\r') {
+      cr = true;
+    } else if (cr) {
+      if (c != '\n') {
+        p[i++] = '\n';
+      }
+      cr = false;
+    }
+    p[i++] = c;
+  }
+  if (cr) {
+    p[i++] = '\n';
+  }
+  if (!(pty->conf & kPtyNoecho)) {
+    PtyWrite(pty, p + pty->input.i, i - pty->input.i);
+  }
+  pty->input.i = i;
   return n;
 }