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The codebase is pretty old and glib and gobject moved further down the road and introduced new Header macros for cleaner code and introduced g_auto* functions to cleanup resources automatically when the variable goes out of scope. I propose to clean up the code a bit and at least introduce the new header macros. When working on a part of code for refactoring maybe use g_auto* functions for a more modern codebase. I expect this issue is a long runner.