tint2conf: Sort applications correctly when additional desktop files from non-standard locations are found in the config

src/util/common.c

@@ -112,7 +112,7 @@ void tint_exec(const char *command)
 	}
 }
 
-char *expand_tilde(char *s)
+char *expand_tilde(const char *s)
 {
 	const gchar *home = g_get_home_dir();
 	if (home && (strcmp(s, "~") == 0 || strstr(s, "~/") == s)) {
@@ -125,7 +125,7 @@ char *expand_tilde(char *s)
 	}
 }
 
-char *contract_tilde(char *s)
+char *contract_tilde(const char *s)
 {
 	const gchar *home = g_get_home_dir();
 	if (!home)

src/util/common.h

@@ -53,11 +53,11 @@ void tint_exec(const char *command);
 
 // Returns a copy of s in which "~" is expanded to the path to the user's home directory.
 // The caller takes ownership of the string.
-char *expand_tilde(char *s);
+char *expand_tilde(const char *s);
 
 // The opposite of expand_tilde: replaces the path to the user's home directory with "~".
 // The caller takes ownership of the string.
-char *contract_tilde(char *s);
+char *contract_tilde(const char *s);
 
 // Color
 int hex_char_to_int(char c);