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