Factor out the CONFIG_CBPRINTF_LIBC_SUBSTS exception.
Remove redundant lines and obsolete comment.
Make some code pattern more consistent.
Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
Although flags with pointers are not defined behavior, there is a
desire to have them work, so add a test and fix the complete
implementation so it passes.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
Tests for most paths through the conversion infrastructure. Expected
output can be validated with the host libc by setting USE_LIBC within
the source.
Signed-off-by: Peter Bigot <peter.bigot@nordicsemi.no>
