Check if Windows is using stdout/stderr

hugovk · hugovk · commit 294d00827f7f · 2026-04-21T18:29:15.000+03:00
diff --git a/Python/initconfig.c b/Python/initconfig.c
@@ -295,7 +295,9 @@ _Py_can_colorize(FILE *f)
 #if defined(MS_WINDOWS) && defined(HAVE_WINDOWS_CONSOLE_IO)
     {
         DWORD mode = 0;
-        HANDLE handle = GetStdHandle(STD_OUTPUT_HANDLE);
+        DWORD nStdHandle = (f == stderr) ? STD_ERROR_HANDLE
+                                         : STD_OUTPUT_HANDLE;
+        HANDLE handle = GetStdHandle(nStdHandle);
         if (!GetConsoleMode(handle, &mode)
             || !(mode & ENABLE_VIRTUAL_TERMINAL_PROCESSING))
         {

Original file line number	Diff line number	Diff line change
`@@ -295,7 +295,9 @@ _Py_can_colorize(FILE *f)`
`295`	`295`	`#if defined(MS_WINDOWS) && defined(HAVE_WINDOWS_CONSOLE_IO)`
`296`	`296`	`{`
`297`	`297`	`DWORD mode = 0;`
`298`		`- HANDLE handle = GetStdHandle(STD_OUTPUT_HANDLE);`
	`298`	`+ DWORD nStdHandle = (f == stderr) ? STD_ERROR_HANDLE`
	`299`	`+ : STD_OUTPUT_HANDLE;`
	`300`	`+ HANDLE handle = GetStdHandle(nStdHandle);`
`299`	`301`	`if (!GetConsoleMode(handle, &mode)`
`300`	`302`	`\|\| !(mode & ENABLE_VIRTUAL_TERMINAL_PROCESSING))`
`301`	`303`	`{`