#!/bin/env python

import textwrap
import sys
# first pass: reflow paragraphs
paragraph = []
lines = []
skipping = False
for line in sys.stdin:
    line = line.rstrip()
    if line:
        if line.startswith(">") or skipping:
            # ignore quoted line
            lines.append(line)
        elif line.startswith("```"):
            # ignore code block
            skipping = not skipping
            lines.append(line)
        elif line.startswith("--"):
            skipping = True
            lines.append(line)
        else:
            paragraph.append(line)
    else:
        if paragraph:
            lines.append(' '.join(paragraph))
            paragraph = []
        lines.append("\n")
if paragraph:
    lines.append(' '.join(paragraph))
skipping = False
for line in lines:
    if line.startswith(">"):
        # ignore quoted line
        print(line)
    elif line.startswith("```"):
        # ignore code block
        skipping = not skipping
        print(line)
    elif line.startswith("--"):
        skipping = True
        print(line)
    else:
        # TODO: fix signature being mangled and newlines erased
        if not skipping:
            wrapped = textwrap.wrap(line, width=74, break_long_words=False, replace_whitespace=True)
            print("\n".join(wrapped))
        else:
            print(line)