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#!/usr/bin/env python3
import os
from stat import ST_MODE
import sys
import re
with open(sys.argv[1], "r") as inp:
with open(sys.argv[2], "w") as out:
in_src = False
startp = re.compile(r"^\s*#\+begin_src .* :tangle")
endp = re.compile(r"^\s*#\+end_src")
quoted = re.compile(r"^\s*,(\*|,\*|#\+)")
lines = inp.readlines()
curr = []
min_spaces = -1
for line in lines:
if startp.match(line):
in_src = True
elif endp.match(line):
in_src = False
for l in curr:
out.write(l[min_spaces:])
curr = []
min_spaces = -1
elif in_src:
spaces = len(line) - len(line.lstrip())
if min_spaces == -1 or min_spaces > spaces:
min_spaces = spaces
curr.append(re.sub(r"^(\s*),(\*|,\*|#\+|,#\+)", r"\1\2", line))
os.chmod(sys.argv[2], os.stat(sys.argv[1])[ST_MODE])
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