addr2line_sway.py

import sys
import os
import re

lines = [l.rstrip() for l in sys.stdin.readlines()]

bt = re.compile(".*Backtrace: .*sway.*\[(0x[a-f\d]+)\]")

for line in lines:
    result = bt.match(line)
    if result:
        print(line)
        os.system("addr2line -e {} {}".format(sys.argv[1], result.group(1)))
        print()