convert: make filemap prune useless branch closing revs (
issue2774)
A branch closing revision only applies if one of its parents belongs to the
branch being closed. Otherwise the filemap can prune it too.
#!/usr/bin/env python
# Filter output by the progress extension to make it readable in tests
import sys, re
for line in sys.stdin:
line = re.sub(r'\r+[^\n]', lambda m: '\n' + m.group()[-1:], line)
sys.stdout.write(line)
print