Make numerous improvements

- Python static hello world now 1.8mb
- Python static fully loaded now 10mb
- Python HTTPS client now uses MbedTLS
- Python REPL now completes import stmts
- Increase stack size for Python for now
- Begin synthesizing posixpath and ntpath
- Restore Python \N{UNICODE NAME} support
- Restore Python NFKD symbol normalization
- Add optimized code path for Intel SHA-NI
- Get more Python unit tests passing faster
- Get Python help() pagination working on NT
- Python hashlib now supports MbedTLS PBKDF2
- Make memcpy/memmove/memcmp/bcmp/etc. faster
- Add Mersenne Twister and Vigna to LIBC_RAND
- Provide privileged __printf() for error code
- Fix zipos opendir() so that it reports ENOTDIR
- Add basic chmod() implementation for Windows NT
- Add Cosmo's best functions to Python cosmo module
- Pin function trace indent depth to that of caller
- Show memory diagram on invalid access in MODE=dbg
- Differentiate stack overflow on crash in MODE=dbg
- Add stb_truetype and tools for analyzing font files
- Upgrade to UNICODE 13 and reduce its binary footprint
- COMPILE.COM now logs resource usage of build commands
- Start implementing basic poll() support on bare metal
- Set getauxval(AT_EXECFN) to GetModuleFileName() on NT
- Add descriptions to strerror() in non-TINY build modes
- Add COUNTBRANCH() macro to help with micro-optimizations
- Make error / backtrace / asan / memory code more unbreakable
- Add fast perfect C implementation of μ-Law and a-Law audio codecs
- Make strtol() functions consistent with other libc implementations
- Improve Linenoise implementation (see also github.com/jart/bestline)
- COMPILE.COM now suppresses stdout/stderr of successful build commands

test/libc/calls/mkntcmdline_test.c

@@ -49,24 +49,12 @@ TEST(mkntcmdline, spaceInArgument_getQuotesWrappedAround) {
   EXPECT_STREQ(u"echo \"hello there\" world", cmdline);
 }
 
-TEST(mkntcmdline, justQuote) {
-  char *argv[] = {"\"", NULL};
-  EXPECT_NE(-1, mkntcmdline(cmdline, argv[0], argv));
-  EXPECT_STREQ(u"\"\\\"\"", cmdline);
-}
-
 TEST(mkntcmdline, justSlash) {
   char *argv[] = {"\\", NULL};
   EXPECT_NE(-1, mkntcmdline(cmdline, argv[0], argv));
   EXPECT_STREQ(u"\\", cmdline);
 }
 
-TEST(mkntcmdline, justSlashQuote) {
-  char *argv[] = {"\\\"", NULL};
-  EXPECT_NE(-1, mkntcmdline(cmdline, argv[0], argv));
-  EXPECT_STREQ(u"\"\\\\\\\"\"" /* "\\\"" */, cmdline);
-}
-
 TEST(mkntcmdline, basicQuoting) {
   char *argv[] = {"a\"b c", "d", NULL};
   EXPECT_NE(-1, mkntcmdline(cmdline, argv[0], argv));
@@ -83,3 +71,16 @@ TEST(mkntcmdline, testUnicode) {
   EXPECT_STREQ(u"(╯°□°)╯ \"要依法治国是赞美那些谁是公义的和惩罚恶人。 - 韩非\"",
                cmdline);
 }
+
+TEST(mkntcmdline, fix) {
+  char *argv1[] = {
+      "C:/WINDOWS/system32/cmd.exe",
+      "/C",
+      "more < \"C:\\Users\\jtunn\\AppData\\Local\\Temp\\tmplquaa_d6\"",
+      NULL,
+  };
+  EXPECT_NE(-1, mkntcmdline(cmdline, argv1[0], argv1));
+  EXPECT_STREQ(u"C:\\WINDOWS\\system32\\cmd.exe /C \"more < "
+               u"\\\"C:\\Users\\jtunn\\AppData\\Local\\Temp\\tmplquaa_d6\\\"\"",
+               cmdline);
+}