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cw1-plugin
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README.md
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README.md
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hexchat-plugins
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===============
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Hexchat CW1 plugin
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==================
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Assorted collection of hexchat plugins.
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Implements the CW1 CTCP.
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Plugins are their own branches.
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CW1 CTCP
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========
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Current plugins:
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Syntax:
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- [CW1 plugin](https://cybre.tech/SoniEx2/hexchat-plugins/src/branch/cw1-plugin)
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CW1 <rot13 text>
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The `CW1` CTCP is the Type-1 CW. On clients that don't support `CW1`, it falls back to displaying rot13 text.
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Because rot13 only affects the English alphabet, it is recommended to use CW1 only for text using the Latin alphabet - everything else gets displayed as-is on clients that don't support `CW1`.
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`CW1` may appear multiple times in a message.
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Examples:
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hello\x01CW1 pehry\x01world\x01CW1 !\x01
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On a client that supports CW1:
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hello [hidden text 1 (click to expand)] world [hidden text 2 (click to expand)]
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expands to:
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hello cruel world !
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On a client that doesn't support CW1:
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hello CW1 pehry world CW1 !
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(Some clients may display delimiter boxes around `CW1 pehry` and `CW1 !`, making it easier to distinguish where the hidden text ends from where non-hidden text starts)
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Rot13 is already used in many mental health channels to "hide" triggering content pending further action from the user, which makes it a reasonable choice for a content warning CTCP.
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local hexchat = hexchat
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hexchat.register("rot13", "3.0.1", "rot13")
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local rot13 = {}
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for i = string.byte('a'), string.byte('m') do
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local a, b = string.char(i), string.char(i+13)
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local A, B = a:upper(), b:upper()
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rot13[a] = b
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rot13[b] = a
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rot13[A] = B
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rot13[B] = A
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end
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local function do_rot13(arg, arg_eol)
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if not arg[3] then
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hexchat.print("Usage: /" .. arg[1] .. " <reason> <content>")
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return hexchat.EAT_ALL
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end
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hexchat.command("say " .. arg[2] .. "\x01CW1 " .. arg_eol[3]:gsub("[A-Za-z]", rot13) .. "\x01")
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return hexchat.EAT_ALL
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end
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hexchat.hook_command("cw-rot13", do_rot13)
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local function startswith(str1, str2)
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return str1:sub(1, #str2) == str2
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end
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local function parsecw(msg)
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local hidden = {}
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msg = msg:gsub("()(\1([^\1]*)\1)()", function(start, ctcp, contents, finish)
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if startswith(contents, "CW1 ") then
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local cw = contents:sub(5)
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hidden[#hidden + 1] = cw:gsub("[A-Za-z]", rot13)
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return " [Hidden Text " .. #hidden .. "] "
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end
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return ctcp
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end)
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return msg, hidden
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end
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local invert_notice = false
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local last_notice = false
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local tunpack = unpack or table.unpack
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local skip = false
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local function mkparse(event, pos)
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return function(word, attributes)
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if skip then return end
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if event:find("Notice$") then
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if invert_notice then
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word[pos] = '\1'.. word[pos]
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if last_notice then
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word[pos] = word[pos] .. '\1'
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end
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end
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end
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invert_notice = false
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local old_msg = word[pos]
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local hidden
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word[pos], hidden = parsecw(word[pos])
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if word[pos] ~= old_msg then
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skip = true
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hexchat.emit_print_attrs(attributes, event, tunpack(word))
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for i, v in ipairs(hidden) do
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hexchat.print("\00326*\tHidden Text " .. i .. "\3 > \8"..v.."\8 < (Copy and paste to expand)")
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end
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skip = false
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return hexchat.EAT_ALL
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end
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end
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end
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local function hookparse(event, pos)
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return hexchat.hook_print_attrs(event, mkparse(event, pos))
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end
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do
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(function(f,...)return f(f,...) end)(function(f, a, b, ...)
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if a then
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hookparse(a, b)
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return f(f, ...)
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end
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end,
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"Channel Message", 2,
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"Channel Msg Hilight", 2,
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"Channel Notice", 3,
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"Private Message", 2,
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"Private Message to Dialog", 2,
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"Notice", 2,
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"Your Message", 2,
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"Notice Send", 2,
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"Message Send", 2,
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nil)
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end
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-- from here on: 3.0.1 bugfix
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-- TODO maybe move these to a separate plugin. (or integrate them in hexchat)
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local function tooct(n)
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return string.format("%o", n)
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end
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local function on_privmsg(word, word_eol, attrs)
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-- fix up some PRIVMSGs, pass them on to our handlers above
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local i_at = 0
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for i,v in ipairs(word) do
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if v == "PRIVMSG" then
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i_at = i + 2
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break
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end
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end
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if i_at == 0 then return end
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if word_eol[i_at]:sub(1, 2):find(":[-+]") and tooct(hexchat.props["flags"]):find("[4-7].$") then -- bleh
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word_eol[i_at] = ":" .. word_eol[i_at]:sub(3)
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end
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if word_eol[i_at]:sub(1, 6) == ":\1CW1 " then
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if not word_eol[i_at]:find("\1", 7, true) == #word_eol[i_at] then
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return hexchat.EAT_NONE -- let hexchat handle it normally
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end
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local target = word[i_at - 1]
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local source
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if word[1]:sub(1,1) ~= "@" then
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source = word[1]
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else
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source = word[2]
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end
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source = source:match("^:([^!]+)!") -- this seems easy, right?
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local context = hexchat.find_context(hexchat.get_info("server"), target)
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if context then
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local old_ctx = hexchat.get_context()
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local serv_id = hexchat.props["id"]
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-- sanity check
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if hexchat.set_context(context) and hexchat.props["id"] == serv_id then
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if hexchat.props["type"] == 2 then
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local prefix = ""
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for user in hexchat.iterate("users") do
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if user.nick == source then
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prefix = user.prefix
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end
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end
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-- TODO fix highlights
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hexchat.emit_print_attrs(attrs, "Channel Message", source, word_eol[i_at]:sub(2), prefix)
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return hexchat.EAT_HEXCHAT
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elseif hexchat.props["type"] == 3 then
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hexchat.emit_print_attrs(attrs, "Private Message to Dialog", source, word_eol[i_at]:sub(2))
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return hexchat.EAT_HEXCHAT
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end
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end
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-- assume it's a query, because usually you only get channel messages if you're in the channel
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if not hexchat.set_context(old_ctx) then return end -- how did we get this far without segfaulting?
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end
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if hexchat.prefs["gui_autoopen_dialog"] then
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hexchat.command("query -nofocus " .. target)
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local context = hexchat.find_context(hexchat.get_info("server"), target)
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if context then
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local old_ctx = hexchat.get_context()
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local serv_id = hexchat.props["id"]
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-- sanity check
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if hexchat.set_context(context) and hexchat.props["id"] == serv_id then
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-- meh, go hardmode on this (this shouldn't happen unless find_context returns the server context for some reason)
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if hexchat.props["type"] ~= 3 then
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local found = false
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for chan in hexchat.iterate("channels") do
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if chan.id == serv_id and chan.type == 3 and chan.channel == source then
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found = true
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hexchat.set_context(chan.context)
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end
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end
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-- still not found? ragequit!
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if not found then return hexchat.EAT_HEXCHAT end
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end
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hexchat.emit_print_attrs(attrs, "Private Message to Dialog", source, word_eol[i_at]:sub(2))
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end
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end
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return hexchat.EAT_HEXCHAT
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end
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hexchat.emit_print_attrs(attrs, "Private Message", source, word_eol[i_at]:sub(2))
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return hexchat.EAT_HEXCHAT
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end
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end
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local function on_notice(word, word_eol, attrs) -- this one is much simpler
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local i_at = 0
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for i,v in ipairs(word) do
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if v == "NOTICE" then
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i_at = i + 2
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break
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end
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end
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if i_at == 0 then return end
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if word_eol[i_at]:sub(1, 2):find(":[-+]") and tooct(hexchat.props["flags"]):find("[4-7].$") then -- bleh
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word_eol[i_at] = ":" .. word_eol[i_at]:sub(3)
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end
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if word_eol[i_at]:sub(1, 6) == ":\1CW1 " then
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-- workaround
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invert_notice = true
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last_notice = word_eol[i_at]:sub(-1,-1) == "\1"
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-- then just let hexchat handle it
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end
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end
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hexchat.hook_server_attrs("PRIVMSG", on_privmsg)
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hexchat.hook_server_attrs("NOTICE", on_notice)
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hexchat.print("rot13 loaded") -- this was in 3.0.0 too
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