Enable escape sequence on Windows10 console

* win32/win32.c (init_stdhandle): enable escape sequence on Windows10 console to show `ruby --help` colors correctly.
ruby · Dec 21, 2020 · 09f939d · 09f939d
1 parent 95ce5c0
commit 09f939d
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/win32/win32.c b/win32/win32.c
@@ -2687,6 +2687,17 @@ init_stdhandle(void)
     }
     if (nullfd >= 0 && !keep) close(nullfd);
     setvbuf(stderr, NULL, _IONBF, 0);
+
+    {
+        HANDLE h = GetStdHandle(STD_OUTPUT_HANDLE);
+        DWORD m;
+        if (GetConsoleMode(h, &m)) {
+#ifndef ENABLE_VIRTUAL_TERMINAL_PROCESSING
+#define ENABLE_VIRTUAL_TERMINAL_PROCESSING 0x200
+#endif
+            SetConsoleMode(h, m | ENABLE_VIRTUAL_TERMINAL_PROCESSING);
+        }
+    }
 }
 
 #undef getsockopt