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10b0ece9d8
GLib code normally prints info and debug messages to stdout, but that interferes with programs that are documented to produce machine-readable output such as JSON or XML on stdout. In particular, if such a program uses a GLib-based library, setting G_MESSAGES_DEBUG will typically result in that library's debug messages going to the program's stdout and corrupting the machine-readable output. Unix programs can avoid this by using dup2() to move the original stdout to another fd, then dup2() again to make the new stdout a copy of stderr, but it's easier if we provide a way to not write debug messages to stdout in the first place. Calling g_log_writer_default_set_use_stderr (TRUE) results in behaviour resembling Python's logging.basicConfig(), with all diagnostics going to stderr. Suggested by Allison Karlitskaya on glib#2087. Signed-off-by: Simon McVittie <smcv@collabora.com> |
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