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Move debug_stream initialization to helper method #471

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merged 1 commit into from
Jan 29, 2024
Merged

Move debug_stream initialization to helper method #471

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19 changes: 14 additions & 5 deletions argcomplete/finders.py
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Original file line number Diff line number Diff line change
Expand Up @@ -117,11 +117,7 @@ def __call__(
# not an argument completion invocation
return

try:
_io.debug_stream = os.fdopen(9, "w")
except Exception:
_io.debug_stream = sys.stderr
debug()
self._init_debug_stream()

if output_stream is None:
filename = os.environ.get("_ARGCOMPLETE_STDOUT_FILENAME")
Expand Down Expand Up @@ -190,6 +186,19 @@ def __call__(
_io.debug_stream.flush()
exit_method(0)

def _init_debug_stream(self):
"""Initialize debug output stream

By default, writes to file descriptor 9, or stderr if that fails.
This can be overridden by derived classes, for example to avoid
clashes with file descriptors being used elsewhere (such as in pytest).
"""
try:
_io.debug_stream = os.fdopen(9, "w")
except Exception:
_io.debug_stream = sys.stderr
debug()

def _get_completions(self, comp_words, cword_prefix, cword_prequote, last_wordbreak_pos):
active_parsers = self._patch_argument_parser()

Expand Down
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