Expands field codes in command according to Freedesktop.
org Desktop Entry Specification.
| command |
Input string (command to expand) or null. |
| uri_list |
Input string list (filename/URL field) or null. |
| icon |
Input string (icon field) or null. |
| name |
Input string (name field) or null. |
| uri |
Input string (URI field) or null. |
| requires_terminal |
Input boolean. |
|
null on error, else the string, which should be freed using g_free when no longer needed. |