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#!/usr/bin/env python
import os, sys, re
finput=open(sys.argv[1], "rt")
# read the whole file content to s
s = "".join(finput.readlines())
finput.close()
# normalize line endings
s = re.sub(r"\r\n", "\n", s)
# remove trailing whitespaces
s = re.sub(r"[ \t]+\n", "\n", s)
# compress multiple empty lines
for i in range(5):
s = re.sub(r"\n\n\n", "\n\n", s)
# remove empty line before ".." that terminates a code block
s = re.sub(r"\n\n\.\.\n", "\n..\n", s)
# move :: starting a code block to the end of previous line
s = re.sub(r"\n\n::\n", " ::\n", s)
# remove extra line breaks before/after _ or ,
s = re.sub(r"\n[ \t]*([_,])\n", r"\1", s)
# remove extra line breaks after `
s = re.sub(r"`\n", "` ", s)
# remove extra line breaks before `
s = re.sub(r"\n[ \t]*`", " `", s)
# remove links to wiki
s = re.sub(r"\n[ \t]*`id=\d[^`]+`__\n", "", s)
# remove trailing whitespaces one more time
s = re.sub(r"[ \t]+\n", "\n", s)
foutput=open(sys.argv[2], "wt")
foutput.write(s)
foutput.close()
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