The encoding arg is confusing, because it is not applied consistently
for all IO.
Also, it is useless, as the majority of files are ASCII encoded, which
are fine to encode and decode with any mode.
Moreover, UTF-8 is already required for most scripts to work properly,
so setting the encoding twice is redundant.
So remove the encoding from most IO. It would be fine to remove from all
IO, however I kept it for two files:
* contrib/asmap/asmap-tool.py: This specifically looks for utf-8
encoding errors, so it makes sense to sepecify the utf-8 encoding
explicitly.
* test/functional/test_framework/test_node.py: Reading the debug log in
text mode specifically counts the utf-8 characters (not bytes), so it
makes sense to specify the utf-8 encoding explicitly.
This refactor does not change behavior, but it has a few benefits:
* The shellcheck SC2086 warning is disabled for the whole command, but
is only needed for the CI_CONTAINER_CAP env var. So in Python, only
pass this one env var to shlex.split() for proper word splitting.
* Future logic improvements can be implemented in Python.
The comments are moved, which can be checked via the git options:
--color-moved=dimmed-zebra --color-moved-ws=ignore-all-space
The build scripts inside the image retry after a failure. However, there
may be some rare network failures inside the container engine. For
example, when pulling the underlying base image, or when pulling the
docker cache.
Thus, retry after a failure once, which should hopefully fix
https://github.com/bitcoin/bitcoin/issues/33640.
The other code in this file is using this pattern to throw when a key is
unset, instead of silently returning a None when using os.getenv(key)
with no default value specified.
So use the pattern here as well. As the env vars are always set, this
should be a refactor that does not change the behavior.
This has a few benefits:
* The shellcheck SC2086 warning is disabled for the whole command, but
is only needed for the DOCKER_BUILD_CACHE_ARG env var. So in Python,
only pass this one env var to shlex.split() for proper word splitting.
* Future logic improvements can be implemented in Python.
The comments are moved, which can be checked via the git options:
--color-moved=dimmed-zebra --color-moved-ws=ignore-all-space
