Try the other method again

src/inputs.c

@@ -7,6 +7,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <sys/mman.h>
+#include <ctype.h>
 
 void handle_desktop(void* input_struct, struct tb_event* event)
 {
@@ -76,6 +77,7 @@ void handle_text(void* input_struct, struct tb_event* event)
 void input_desktop(struct desktop* target)
 {
 	target->list = NULL;
+    target->list_simple = NULL;
 	target->cmd = NULL;
 	target->display_server = NULL;
 	target->cur = 0;
@@ -176,6 +178,7 @@ void input_desktop_add(
 {
 	++(target->len);
 	target->list = realloc(target->list, target->len * (sizeof (char*)));
+    target->list_simple = realloc(target->list_simple, target->len * (sizeof (char*)));
     target->cmd = realloc(target->cmd, target->len * (sizeof (char*)));
 	target->display_server = realloc(
 		target->display_server,
@@ -190,7 +193,22 @@ void input_desktop_add(
 		return;
 	}
 
+    int name_len = strlen(name);
+
 	target->list[target->cur] = name;
+
+    char* name_simple = *name;
+    if (strstr(name_simple, " ") != NULL)
+    {
+        name_simple = strtok(name_simple, " ");
+    }
+
+    for (int i = 0; i < name_len; i++)
+    {
+        name_simple[i] = tolower(name_simple[i]);
+    }
+
+    target->list_simple[target->cur] = name_simple;
     target->cmd[target->cur] = cmd;
 	target->display_server[target->cur] = display_server;
 }

src/inputs.h

@@ -23,6 +23,7 @@ struct text
 struct desktop
 {
 	char** list;
+    char** list_simple;
 	char** cmd;
 	enum display_server* display_server;
 

src/login.c

@@ -265,15 +265,14 @@ void env_xdg_session(const enum display_server display_server)
 	}
 }
 
-void env_xdg(const char* tty_id)
+void env_xdg(const char* tty_id, const char* desktop_name)
 {
     char user[15];
-    char* desktop = getenv("XDG_CURRENT_DESKTOP");
     snprintf(user, 15, "/run/user/%d", getuid());
     setenv("XDG_RUNTIME_DIR", user, 0);
     setenv("XDG_SESSION_CLASS", "user", 0);
     setenv("XDG_SESSION_ID", "1", 0);
-    setenv("XDG_SESSION_DESKTOP", desktop ? desktop : "none", 0);
+    setenv("XDG_SESSION_DESKTOP", desktop_name, 0);
     setenv("XDG_SEAT", "seat0", 0);
     setenv("XDG_VTNR", tty_id, 0);
 }
@@ -610,7 +609,7 @@ void auth(
 		}
 
 		// add xdg variables
-		env_xdg(tty_id);
+		env_xdg(tty_id, desktop->list_simple[desktop->cur]);
 
 		// execute
 		int ok = chdir(pwd->pw_dir);