Sending "escape" instead of "Escape"

i3-vim-focus/main.c

@@ -0,0 +1,63 @@
+/* File: i3_vim_focus.c
+ *
+ * Compile with:
+ * gcc -lX11 -lxdo -o i3_vim_focus i3_vim_focus.c $(pkg-config --libs --cflags i3ipc-glib-1.0)
+ *
+ */
+
+#include <stdio.h>
+
+#include <strings.h>
+#include <string.h>
+
+#include <xdo.h>
+
+#include <glib/gprintf.h>
+#include <i3ipc-glib/i3ipc-glib.h>
+
+int main(int argc, char *argv[]) {
+
+    char cmd[20];
+
+    unsigned char *name;
+    int name_len;
+    int name_type;
+    Window window_ret;
+
+    i3ipcConnection *conn;
+    gchar *reply;
+
+    if(argc < 2){
+        printf("Missing argument\n");
+        return 1;
+    }
+
+    xdo_t *xdo = xdo_new(NULL);
+    xdo_get_active_window(xdo, &window_ret);
+    xdo_get_window_name(xdo, window_ret, &name, &name_len, &name_type);
+
+    if(strstr(name, "VIM")) 
+    {
+        strcpy(cmd, "Escape+g+w+");
+
+
+        strcat(cmd, (argv[1][0] == 'l')? "h" :
+                    (argv[1][0] == 'd')? "j" :
+                    (argv[1][0] == 'u')? "k" :
+                                         "l" );
+
+        xdo_send_keysequence_window(xdo, window_ret, cmd, 0);
+    }
+    else
+    {
+        conn = i3ipc_connection_new(NULL, NULL);
+        strcpy(cmd, "focus ");
+        strcat(cmd, argv[1]);
+        reply = i3ipc_connection_message(conn, I3IPC_MESSAGE_TYPE_COMMAND, cmd, NULL);
+        g_free(reply);
+        g_object_unref(conn);
+    }
+
+    XFree(name);
+    return  0;
+}

i3-vim-focus/src/main.rs

@@ -111,8 +111,8 @@ fn xdo_i3_calls(name: &str, direction: Direction, move_window: bool) -> Result<S
 
                     if window_name.contains("VIM") {
                         let sequence = match move_window {
-                            true => format!("Escape+g+m+{}", direction.to_vim_direction()),
-                            false => format!("Escape+g+w+{}", direction.to_vim_direction()),
+                            true => format!("escape+g+m+{}", direction.to_vim_direction()),
+                            false => format!("escape+g+w+{}", direction.to_vim_direction()),
                         };
                         let mods = xdo.get_active_modifiers()?;
                         window.clear_active_modifiers(&mods)?;