make commandline docs

docs.py

import re
import subprocess
cmds = subprocess.check_output(["textile", "commands"]).decode("utf-8").split("\n")[:-1]
seen = set()
for cmd in cmds:
    line = cmd.split(" ") + ["--help",]
    if line:
        if line[1] not in seen:
            seen.add(line[1])
            header = "# `{}`\n\n".format(line[1])
        else:
            header = ""
        help = subprocess.check_output(line).decode("utf-8").split("\n")
        # Make usage bold
        help[0] = "**Usage:**\n"
        # Backtick command name
        help[1] = "`{}`".format(help[1][2:]).lower()
        # Remove leading spaces
        # print(help)
        help = [re.sub(r'^[ \t]+', "", h) for h in help]
        help = ["Command Options:" if h.endswith("command options]") else h+"  " for h in help]
        # Merge back into string
        help = "\n".join(help)
        help = help.replace("Command Options:\n\n", "")
        # Regex caption options and add backticks
        flag = re.compile(r"(-{1,2}\w*-?\w*=?)")
        help = flag.sub(r"`\1`", help)
        # Create subheade
        if len(line) > 3:
            header += "## `{}`\n\n".format(" ".join(line[1:-1]))
        print(header + help)