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import subprocess
from pelican import signals
def git_describe():
"""Check and return git describe --tags value."""
return subprocess \
.run(["git", "describe", "--tags"],
stdout=subprocess.PIPE, check=True) \
.stdout.decode('utf-8').strip()
def expand_context(generators):
desc = git_describe()
for gen in generators:
gen.context['git_describe'] = desc
def register():
"""Register Pelican signals to dedicated functions."""
signals.all_generators_finalized.connect(expand_context)
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