1 files changed, 38 insertions, 0 deletions
diff --git a/src/nvim/os/os_win_console.c b/src/nvim/os/os_win_console.c
index 816e81e997..953d291290 100644
--- a/src/nvim/os/os_win_console.c
+++ b/src/nvim/os/os_win_console.c
@@ -1,6 +1,7 @@
 #include <string.h>
 
 #include "nvim/globals.h"
+#include "nvim/memory.h"
 #include "nvim/os/fs.h"
 #include "nvim/os/input.h"
 #include "nvim/os/os.h"
@@ -105,3 +106,40 @@ void os_title_reset(void)
 {
   SetConsoleTitle(origTitle);
 }
+
+#if !defined(ENABLE_VIRTUAL_TERMINAL_PROCESSING)
+# define ENABLE_VIRTUAL_TERMINAL_PROCESSING 0x0004
+#endif
+/// Guesses the terminal-type.  Calls SetConsoleMode() and uv_set_vterm_state()
+/// if appropriate.
+///
+/// @param[in,out] term Name of the guessed terminal, statically-allocated
+/// @param out_fd stdout file descriptor
+void os_tty_guess_term(const char **term, int out_fd)
+{
+  bool conemu_ansi = strequal(os_getenv("ConEmuANSI"), "ON");
+  bool vtp = false;
+
+  HANDLE handle = (HANDLE)_get_osfhandle(out_fd);
+  DWORD dwMode;
+  if (handle != INVALID_HANDLE_VALUE && GetConsoleMode(handle, &dwMode)) {
+    dwMode |= ENABLE_VIRTUAL_TERMINAL_PROCESSING;
+    if (SetConsoleMode(handle, dwMode)) {
+      vtp = true;
+    }
+  }
+
+  if (*term == NULL) {
+    if (vtp) {
+      *term = "vtpcon";
+    } else if (conemu_ansi) {
+      *term = "conemu";
+    } else {
+      *term = "win32con";
+    }
+  }
+
+  if (conemu_ansi) {
+    uv_tty_set_vterm_state(UV_TTY_SUPPORTED);
+  }
+}