Make fixes and improvements

- Fix handling of precision in hex float formatting
- Enhance the cocmd interpreter for system() and popen()
- Manually ran the Lua unit tests, which are now passing
- Let stdio i/o operations happen when file is in error state
- We're now saving and restoring xmm in ftrace out of paranoia

third_party/lua/test/files.lua

@@ -792,9 +792,18 @@ assert(os.date(string.rep("%", 200)) == string.rep("%", 100))
 local function checkDateTable (t)
   _G.D = os.date("*t", t)
   assert(os.time(D) == t)
-  load(os.date([[assert(D.year==%Y and D.month==%m and D.day==%d and
-    D.hour==%H and D.min==%M and D.sec==%S and
-    D.wday==%w+1 and D.yday==%j)]], t))()
+  -- [jart] rewrote test due to octal
+  assert(string.format('%d', D.year) == os.date('%Y', t))
+  assert(string.format('%02d', D.month) == os.date('%m', t))
+  assert(string.format('%02d', D.day) == os.date('%d', t))
+  assert(string.format('%02d', D.hour) == os.date('%H', t))
+  assert(string.format('%02d', D.min) == os.date('%M', t))
+  assert(string.format('%02d', D.sec) == os.date('%S', t))
+  assert(string.format('%d', D.wday - 1) == os.date('%w', t))
+  assert(string.format('%03d', D.yday) == os.date('%j', t))
+  -- load(os.date([[assert(D.year==%Y and D.month==%m and D.day==%d and
+  --   D.hour==%H and D.min==%M and D.sec==%S and
+  --   D.wday==%w+1 and D.yday==%j)]], t))()
   _G.D = nil
 end
 

third_party/lua/test/literals.lua

@@ -25,7 +25,7 @@ assert("\099" == '\99')
 assert("\099\n" == 'c\10')
 assert('\0\0\0alo' == '\0' .. '\0\0' .. 'alo')
 
-assert(010 .. 020 .. -030 == "1020-30")
+assert(10 .. 20 .. -30 == "1020-30")  -- [jart] octal extension
 
 -- hexadecimal escapes
 assert("\x00\x05\x10\x1f\x3C\xfF\xe8" == "\0\5\16\31\60\255\232")

third_party/lua/test/math.lua

@@ -401,7 +401,7 @@ assert(tonumber("-0x"..string.rep("f", (intbits//4))) == 1)
 
 -- testing 'tonumber' with base
 assert(tonumber('  001010  ', 2) == 10)
-assert(tonumber('  001010  ', 10) == 001010)
+assert(tonumber('  001010  ', 10) == 1010)  -- [jart] octal extension fix
 assert(tonumber('  -1010  ', 2) == -10)
 assert(tonumber('10', 36) == 36)
 assert(tonumber('  -10  ', 36) == -36)